| Year |
Citation |
Score |
| 2019 |
White RL, Long KS, Becker RH, Blair WP, Helfand DJ, Winkler PF. A New, Deep JVLA Radio Survey of M33 Astrophysical Journal Supplement Series. 241: 37. DOI: 10.3847/1538-4365/Ab0E89 |
0.587 |
|
| 2015 |
Helfand DJ, White RL, Becker RH. The last of first: The final catalog and source identifications Astrophysical Journal. 801. DOI: 10.1088/0004-637X/801/1/26 |
0.563 |
|
| 2013 |
Harrison FA, Craig WW, Christensen FE, Hailey CJ, Zhang WW, Boggs SE, Stern D, Cook WR, Forster K, Giommi P, Grefenstette BW, Kim Y, Kitaguchi T, Koglin JE, Madsen KK, ... ... Helfand DJ, et al. The Nuclear Spectroscopic Telescope Array (NuSTAR) high-energy X-ray mission Astrophysical Journal. 770. DOI: 10.1088/0004-637X/770/2/103 |
0.756 |
|
| 2012 |
Thyagarajan N, Helfand DJ, White RL, Becker RH. ERRATUM: “VARIABLE AND TRANSIENT RADIO SOURCES IN THE FIRST SURVEY” (2011, ApJ, 742, 49) The Astrophysical Journal. 746: 114. DOI: 10.1088/0004-637X/746/1/114 |
0.73 |
|
| 2011 |
Tüllmann R, Gaetz TJ, Plucinsky PP, Kuntz KD, Williams BF, Pietsch W, Haberl F, Long KS, Blair WP, Sasaki M, Winkler PF, Challis P, Pannuti TG, Edgar RJ, Helfand DJ, et al. The Chandra ACIS survey of M33 (ChASeM33): The final source catalog Astrophysical Journal, Supplement Series. 193. DOI: 10.1088/0067-0049/193/2/31 |
0.697 |
|
| 2011 |
Thyagarajan N, Helfand DJ, White RL, Becker RH. Variable and transient radio sources in the first survey Astrophysical Journal. 742. DOI: 10.1088/0004-637X/742/1/49 |
0.745 |
|
| 2010 |
Long KS, Blair WP, Winkler PF, Becker RH, Gaetz TJ, Ghavamian P, Helfand DJ, Hughes JP, Kirshner RP, Kuntz KD, McNeil EK, Pannuti TG, Plucinsky PP, Saul D, Tüllmann R, et al. The chandra acis survey of M33: X-ray, optical, and radio properties of the supernova remnants Astrophysical Journal, Supplement Series. 187: 495-559. DOI: 10.1088/0067-0049/187/2/495 |
0.714 |
|
| 2010 |
Eckart ME, McGreer ID, Stern D, Harrison FA, Helfand DJ. A comparison of X-ray and mid-infrared selection of obscured active galactic nuclei Astrophysical Journal. 708: 584-597. DOI: 10.1088/0004-637X/708/1/584 |
0.798 |
|
| 2010 |
Becker RH, Helfand DJ, White RL, Proctor DD. Variable radio sources in the galactic plane Astronomical Journal. 140: 157-166. DOI: 10.1088/0004-6256/140/1/157 |
0.536 |
|
| 2009 |
McGreer ID, Helfand DJ, White RL. Radio-selected quasars in the Sloan Digital sky survey Astronomical Journal. 138: 1925-1937. DOI: 10.1088/0004-6256/138/6/1925 |
0.766 |
|
| 2009 |
Rau A, Kulkarni SR, Law NM, Bloom JS, Ciardi D, Djorgovski GS, Fox DB, Gal-Yam A, Grillmair CC, Kasliwal MM, Nugent PE, Ofek EO, Quimby RM, Reach WT, Shara M, ... ... Helfand DJ, et al. Exploring the optical transient sky with the palomar transient factory Publications of the Astronomical Society of the Pacific. 121: 1334-1351. DOI: 10.1086/605911 |
0.494 |
|
| 2008 |
Slane P, Helfand DJ, Reynolds SP, Gaensler BM, Lemiere A, Wang Z. The infrared detection of the pulsar wind nebula in the galactic supernova remnant 3C 58 Astrophysical Journal. 676. DOI: 10.1086/587031 |
0.527 |
|
| 2008 |
Plucinsky PP, Williams B, Long KS, Gaetz TJ, Sasaki M, Pietsch W, Tüllmann R, Smith RK, Blair WP, Helfand D, Hughes JP, Winkler PF, De Avillez M, Bianchi L, Breitschwerdt D, et al. Chandra ACIS Survey of M33 (ChASeM33): A first look Astrophysical Journal, Supplement Series. 174: 366-378. DOI: 10.1086/522942 |
0.728 |
|
| 2007 |
Camilo F, Ransom SM, Peñalver J, Karastergiou A, Van Kerkwijk MH, Durant M, Halpern JP, Reynolds J, Thum C, Helfand DJ, Zimmerman N, Cognard I. The variable radio-to-x-ray spectrum of the magnetar XTE J1810-197 Astrophysical Journal. 669: 561-569. DOI: 10.1086/521548 |
0.601 |
|
| 2007 |
Glikman E, Helfand DJ, White RL, Becker RH, Gregg MD, Lacy M. The FIRST-2MASS Red Quasar Survey The Astrophysical Journal. 667: 673-703. DOI: 10.1086/521073 |
0.471 |
|
| 2007 |
Morton TD, Slane P, Borkowski KJ, Reynolds SP, Helfand DJ, Gaensler BM, Hughes JP. Observations of X-rays and thermal dust emission from the supernova remnant KES 75 Astrophysical Journal. 667: 219-225. DOI: 10.1086/520496 |
0.696 |
|
| 2007 |
Helfand DJ, Gotthelf EV, Halpern JP, Camilo And F, Semler DR, Becker RH, White RL. Discovery of the putative pulsar and wind nebula associated with the TeV gamma-ray source HESS J1813-178 Astrophysical Journal. 665: 1297-1303. DOI: 10.1086/519734 |
0.632 |
|
| 2007 |
De Vries WH, Hodge JA, Becker RH, White RL, Helfand DJ. Star formation in low radio luminosity active galactic nuclei from the sloan digital sky survey Astronomical Journal. 134: 457-465. DOI: 10.1086/518866 |
0.581 |
|
| 2007 |
Camilo F, Cognard I, Ransom SM, Halpern JP, Reynolds J, Zimmerman N, Gotthelf EV, Helfand DJ, Demorest P, Theureau G, Backer DC. The magnetar XTE J1810-197: Variations in torque, radio flux density, and pulse profile morphology Astrophysical Journal. 663: 497-504. DOI: 10.1086/518226 |
0.52 |
|
| 2007 |
Helfand DJ, Chatterjee S, Brisken WF, Camilo F, Reynolds J, Van Kerkwijk MH, Halpern JP, Ransom SM. VLBA measurement of the transverse velocity of the magnetar XTE J1810-197 Astrophysical Journal. 662: 1198-1203. DOI: 10.1086/518028 |
0.433 |
|
| 2007 |
Gotthelf EV, Helfand DJ, Newburgh L. A shell of thermal X-ray emission surrounding the young Crab-like remnant 3C 58 Astrophysical Journal. 654: 267-272. DOI: 10.1086/508767 |
0.554 |
|
| 2007 |
White RL, Helfand DJ, Becker RH, Glikman E, De Vries WIM. Signals from the noise: Image stacking for quasars in the first survey Astrophysical Journal. 654: 99-114. DOI: 10.1086/507700 |
0.734 |
|
| 2007 |
Gotthelf EV, Helfand DJ. Discovery of a pulsar candidate associated with the TeV gamma-ray source HESS J1813-178 Aip Conference Proceedings. 921: 223-225. DOI: 10.1063/1.2757306 |
0.557 |
|
| 2006 |
Camilo F, Ransom SM, Halpern JP, Reynolds J, Helfand DJ, Zimmerman N, Sarkissian J. Transient pulsed radio emission from a magnetar. Nature. 442: 892-5. PMID 16929292 DOI: 10.1038/Nature04986 |
0.609 |
|
| 2006 |
Mcgreer ID, Becker RH, Helfand DJ, White RL. Discovery of A z = 6.1 radio-loud quasar in the NOAO deep wide field survey Astrophysical Journal. 652: 157-162. DOI: 10.1086/507767 |
0.792 |
|
| 2006 |
Petric A, Telis GA, Paerels F, Helfand DJ. A direct upper limit on the density of cosmological dust from the absence of an X-ray scattering halo around the z = 4.3 quasar QSO 1508+5714 Astrophysical Journal. 651: 41-45. DOI: 10.1086/507667 |
0.458 |
|
| 2006 |
Reviolio P, Helfand DJ. On radio-bright active galactic nuclei in a complete spectroscopic redshift survey Astrophysical Journal. 650: 717-726. DOI: 10.1086/507085 |
0.598 |
|
| 2006 |
Eckart ME, Stern D, Helfand DJ, Harrison FA, Mao PH, Yost SA. The Serendipitous Extragalactic X-ray Source Identification (sexsi) program. III. Optical spectroscopy Astrophysical Journal, Supplement Series. 165: 19-56. DOI: 10.1086/504524 |
0.676 |
|
| 2006 |
Helfand DJ, Becker RH, White RL, Fallon A, Tuttle S. MAGPIS: A multi-array galactic plane imaging survey Astronomical Journal. 131: 2525-2537. DOI: 10.1086/503253 |
0.547 |
|
| 2006 |
Glikman E, Helfand DJ, White RL. A near-infrared spectral template for quasars Astrophysical Journal. 640: 579-591. DOI: 10.1086/500098 |
0.691 |
|
| 2006 |
Becker RH, White RL, Helfand DJ. MAGPIS: The multi-array galactic plane imaging survey Aip Conference Proceedings. 840: 102-104. DOI: 10.1063/1.2216612 |
0.333 |
|
| 2005 |
Halpern JP, Gotthelf EV, Becker RH, Helfand DJ, White RL. Discovery of radio emission from the transient anomalous X-ray pulsar XTE J1810-197 Astrophysical Journal. 632. DOI: 10.1086/497537 |
0.61 |
|
| 2005 |
White RL, Becker RH, Helfand DJ. New catalogs of compact radio sources in the Galactic plane Astronomical Journal. 130: 586-596. DOI: 10.1086/431249 |
0.476 |
|
| 2005 |
Stern D, Yost SA, Eckart ME, Harrison FA, Helfand DJ, Djorgovski SG, Malhotra S, Rhoads JE. A galaxy at z = 6.545 and constraints on the epoch of reionization Astrophysical Journal. 619: 12-18. DOI: 10.1086/426423 |
0.637 |
|
| 2005 |
Glveon U, Becker RH, Helfand DJ, White RL. A new catalog of radio compact H II regions in the milky way Astronomical Journal. 129: 348-354. DOI: 10.1086/426360 |
0.325 |
|
| 2005 |
Eckart ME, Laird ES, Stern D, Mao PH, Helfand DJ, Harrison FA. The Serendipitous Extragalactic X-ray Source Identification (SEXSI) Program. II. Optical imaging Astrophysical Journal, Supplement Series. 156: 35-45. DOI: 10.1086/425869 |
0.569 |
|
| 2004 |
Eckart ME, Harrison FA, Mao PH, Yost SA, Helfand DJ, Laird ES, Stern D. The Serendipitous Extragalactic X-Ray Source Identification (Sexsi) Program Mathematical Models and Methods in Applied Sciences. 37-38. DOI: 10.1142/9789812702432_0009 |
0.477 |
|
| 2004 |
Hands ADP, Warwick RS, Watson MG, Helfand DJ. X-ray source populations in the galactic plane Monthly Notices of the Royal Astronomical Society. 351: 31-56. DOI: 10.1111/J.1365-2966.2004.07777.X |
0.633 |
|
| 2004 |
Chang TC, Refreoier A, Helfand DJ. Weak lensing by large-scale structure with the first radio survey Astrophysical Journal. 617: 794-810. DOI: 10.1086/425491 |
0.684 |
|
| 2004 |
Slane P, Helfand DJ, Van Swaluw ED, Murray SS. New constraints on the structure and evolution of the pulsar wind nebula 3C 58 Astrophysical Journal. 616: 403-413. DOI: 10.1086/424814 |
0.543 |
|
| 2004 |
Halpern JP, Gotthelf EV, Camilo F, Helfand DJ, Ransom SM. X-ray, radio, and optical observations of the putative pulsar in the supernova remnant CTA 1 Astrophysical Journal. 612: 398-407. DOI: 10.1086/422409 |
0.623 |
|
| 2004 |
De Vries WH, Becker RH, White RL, Helfand DJ. Optical properties of faint first variable radio sources Astronomical Journal. 127: 2565-2578. DOI: 10.1086/383550 |
0.526 |
|
| 2004 |
Glikman E, Gregg MD, Lacy M, Helfand DJ, Becker RH, White RL. First-2mass sources below the APM detection threshold: A population of highly reddened quasars Astrophysical Journal. 607: 60-75. DOI: 10.1086/383305 |
0.695 |
|
| 2003 |
Harrison FA, Eckart ME, Mao PH, Helfand DJ, Stern D. The serendipitous extragalactic X-ray source identification program. I. Characteristics of the hard X-ray sample Astrophysical Journal. 596: 944-956. DOI: 10.1086/378087 |
0.567 |
|
| 2003 |
White RL, Helfand DJ, Becker RH, Gregg MD, Postman M, Lauer TR, Oegerle W. An I-band-selected sample of radio-emitting quasars: Evidence for a large population of red quasars Astronomical Journal. 126: 706-722. DOI: 10.1086/376597 |
0.485 |
|
| 2003 |
Helfand DJ, Agüeros MA, Gotthelf EV. An X-ray image of the composite supernova remnant SNR G16.7+0.1 Astrophysical Journal. 592: 941-946. DOI: 10.1086/375838 |
0.572 |
|
| 2003 |
Blanton EL, Gregg MD, Helfand DJ, Becker RH, White RL. Discovery of a high-redshift (z = 0.96) cluster of galaxies using a first survey wide-angle-tailed radio source Astronomical Journal. 125: 1635-1641. DOI: 10.1086/368140 |
0.495 |
|
| 2003 |
Helfand DJ, Collins BF, Gotthelf EV. Chandra X-ray imaging spectroscopy of the young supernova remnant Kesteven 75 Astrophysical Journal. 582: 783-792. DOI: 10.1086/344725 |
0.565 |
|
| 2003 |
Eckart M, Harrison F, Helfand D, Laird E, Mao P, Stern D. The serendipitous extragalactic X-ray source identification (SEXSI) survey Astronomische Nachrichten. 324: 180-180. DOI: 10.1002/Asna.200310079 |
0.552 |
|
| 2003 |
Eckart ME, Harrison FA, Helfand DJ, Laird E, Mao PH, Stern D. The serendipitous extragalactic X-ray source identification (SEXSI) survey Astronomische Nachrichten. 324: 180. |
0.468 |
|
| 2002 |
McMahon RG, White RL, Helfand DJ, Becker RH. Optical counterparts for 70,000 radio sources: APM identifications for the first radio survey Astrophysical Journal, Supplement Series. 143: 1-23. DOI: 10.1086/342623 |
0.547 |
|
| 2002 |
Slane PO, Helfand DJ, Murray SS. New constraints on neutron star cooling from Chandra observations of 3C 58 Astrophysical Journal. 571. DOI: 10.1086/341179 |
0.496 |
|
| 2002 |
Lacy M, Gregg M, Becker RH, White RL, Glikman E, Helfand D, Winn JN. The reddest quasars. II. A gravitationally lensed FeLoBal quasar Astronomical Journal. 123: 2925-2935. DOI: 10.1086/340568 |
0.74 |
|
| 2002 |
Stern D, Moran EC, Coil AL, Connolly A, Davis M, Dawson S, Dey A, Eisenhardt P, Elston R, Graham JR, Harrison F, Helfand DJ, Holden B, Mao P, Rosati P, et al. Chandra detection of a type II quasar at z = 3.288 Astrophysical Journal. 568: 71-81. DOI: 10.1086/338886 |
0.633 |
|
| 2002 |
Gregg MD, Lacy M, White RL, Glikman E, Helfand D, Becker RH, Brotherton MS. The Reddest Quasars The Astrophysical Journal. 564: 133-142. DOI: 10.1086/324145 |
0.772 |
|
| 2001 |
Helfand DJ. High-energy astronomy: 60 New octaves of discovery space Publications of the Astronomical Society of the Pacific. 113: 1159-1161. DOI: 10.1086/323414 |
0.418 |
|
| 2001 |
Becker RH, White RL, Gregg MD, Laurent-Muehleisen SA, Brotherton MS, Impey CD, Chaffee FH, Richards GT, Helfand DJ, Lacy M, Courbin F, Proctor DD. The First Bright Quasar Survey. III. The South Galactic cap Astrophysical Journal, Supplement Series. 135: 227-262. DOI: 10.1086/321798 |
0.536 |
|
| 2001 |
Helfand DJ, Gotthelf EV, Halpern JP. Vela pulsar and its synchrotron nebula Astrophysical Journal. 556: 380-391. DOI: 10.1086/321533 |
0.533 |
|
| 2001 |
Helfand DJ, Moran EC. The hard x-ray luminosity of ob star populations: Implications for the contribution of star formation to the cosmic x-ray background Astrophysical Journal. 554: 27-42. DOI: 10.1086/321368 |
0.622 |
|
| 2001 |
Leighly KM, Halpern JP, Helfand DJ, Becker RH, Impey CD. First observations of the second-brightest quasar Astronomical Journal. 121: 2889-2894. DOI: 10.1086/321094 |
0.604 |
|
| 2001 |
Blanton EL, Gregg MD, Helfand DJ, Becker RH, Leighly KM. The environments of a complete moderate-redshift sample of first bent-double radio sources Astronomical Journal. 121: 2915-2927. DOI: 10.1086/321074 |
0.491 |
|
| 2001 |
Halpern JP, Camilo F, Gotthelf EV, Helfand DJ, Kramer M, Lyne AG, Leighly KM, Eracleous M. PSR J2229+6114: Discovery of an energetic young pulsar in the error box of the EGRET source 3EG J2227+6122 Astrophysical Journal. 552. DOI: 10.1086/320347 |
0.569 |
|
| 2001 |
Helfand DJ, Stone RPS, Willman B, White RL, Becker RH, Price T, Gregg MD, McMahon RG. Long-term optical variability of radio-selected quasars from the first survey Astronomical Journal. 121: 1872-1885. DOI: 10.1086/319971 |
0.467 |
|
| 2001 |
Halpern JP, Gotthelf EV, Leighly KM, Helfand DJ. A possible X-ray and radio counterpart of the high-energy gamma-ray source 3EG J2227 + 6122 Astrophysical Journal. 547: 323-333. DOI: 10.1086/318361 |
0.624 |
|
| 2000 |
White RL, Becker RH, Gregg MD, Laurent-Muehleisen SA, Brotherton MS, Impey CD, Petry CE, Foltz CB, Chaffee FH, Richards GT, Oegerle WR, Helfand DJ, McMahon RG, Cabanela JE. The FIRST Bright Quasar Survey. II. 60 nights and 1200 spectra later Astrophysical Journal, Supplement Series. 126: 133-207. DOI: 10.1086/313300 |
0.517 |
|
| 2000 |
Blanton EL, Gregg MD, Helfand DJ, Becker RH, White RL. First bent-double radio sources: Tracers of high-redshift clusters Astrophysical Journal. 531: 118-136. DOI: 10.1086/308428 |
0.387 |
|
| 1999 |
Moran EC, Lehnert MD, Helfand DJ. X-rays from NGC 3256: High-energy emission in starburst galaxies and their contribution to the cosmic X-ray background Astrophysical Journal. 526: 649-664. DOI: 10.1086/308008 |
0.636 |
|
| 1999 |
Helfand DJ, Schnee S, Becker RH, White RL, McMahon RG. The first unbiased survey for radio stars Astronomical Journal. 117: 1568-1577. DOI: 10.1086/300789 |
0.555 |
|
| 1999 |
Blandford RD, Helfand DJ. Will GRB 990123 perform an encore Monthly Notices of the Royal Astronomical Society. 305. DOI: 10.1046/J.1365-8711.1999.02530.X |
0.575 |
|
| 1999 |
Blandford RD, Helfand DJ. Will GRB 990123 perform an encore? Monthly Notices of the Royal Astronomical Society. 305. |
0.495 |
|
| 1998 |
Odewahn SC, Djorgovski SG, Kulkarni SR, Dickinson M, Frail DA, Ramaprakash AN, Bloom JS, Adelberger KL, Halpern J, Helfand DJ, Bahcall J, Goodrich R, Frontera F, Feroci M, Piro L, et al. The Host Galaxy of the Gamma-Ray Burst 971214 The Astrophysical Journal. 509. DOI: 10.1086/311752 |
0.554 |
|
| 1998 |
Buchalter A, Helfand DJ, Becker RH, White RL. Constraining Ω0 with the angular size-redshift relation of double-lobed quasars in the first survey Astrophysical Journal. 494: 503-522. DOI: 10.1086/305236 |
0.444 |
|
| 1998 |
Lozinskaya TA, Silchenko OK, Helfand DJ, Goss WM. Resolving the source of X-rays in the local group dwarf IC 1613: X-ray, radio, and optical observations of a luminous supernova remnant Astronomical Journal. 116: 2328-2340. DOI: 10.1086/300580 |
0.641 |
|
| 1998 |
Schechter PL, Gregg MD, Becker RH, Helfand DJ, White RL. The first first gravitationally lensed quasar: FBQ 0951+2635 Astronomical Journal. 115: 1371-1376. DOI: 10.1086/300294 |
0.515 |
|
| 1998 |
Halpern JP, Thorstensen JR, Helfand DJ, Costa E. Optical afterglow of the γ-ray burst of 14 December 1997 Nature. 393: 41-42. DOI: 10.1038/29935 |
0.568 |
|
| 1998 |
Odewahn SC, Djorgovski SG, Kulkarni SR, Dickinson M, Frail DA, Ramaprakash AN, Bloom JS, Adelberger KL, Halpern J, Helfand DJ, Bahcall J, Goodrich R, Frontera F, Feroci M, Piro L, et al. The host galaxy of the gamma-ray burst 971214 Astrophysical Journal. 509: L5-L8. |
0.47 |
|
| 1997 |
Moran EC, Helfand DJ. The 3-53 keV spectrum of the quasar 1508+5714: X-rays from z = 4.3 Astrophysical Journal. 484. DOI: 10.1086/310787 |
0.612 |
|
| 1997 |
Becker RH, Gregg MD, Hook IM, McMahon RG, White RL, Helfand DJ. The first radio-loud broad absorption line QSO and evidence for a hidden population of quasars Astrophysical Journal. 479. DOI: 10.1086/310594 |
0.507 |
|
| 1997 |
Refregier A, Helfand DJ, Mcmahon RG. Detailed analysis of the cross-correlation function between the X-ray background and foreground galaxies Astrophysical Journal. 477: 58-78. DOI: 10.1086/303687 |
0.628 |
|
| 1997 |
White RL, Decker RH, Helfand DJ, Gregg MD. A catalog of 1.4 GHz radio sources from the first survey Astrophysical Journal. 475: 479-493. DOI: 10.1086/303564 |
0.537 |
|
| 1997 |
Oppenheimer BR, Helfand DJ, Gaidos EJ. A survey of the Einstein IPC database for extended X-ray sources Astronomical Journal. 113: 2134-2146. |
0.544 |
|
| 1996 |
Harrus IM, Hughes JP, Helfand DJ. Discovery of an X-ray synchrotron nebula associated with the radio pulsar PSR B1853+01 in the supernova remnant W44 Astrophysical Journal. 464. DOI: 10.1086/310106 |
0.713 |
|
| 1996 |
Moran EC, Halpern JP, Helfand DJ. Classification of IRAS-selected X-ray galaxies in the ROSAT All-Sky Survey Astrophysical Journal, Supplement Series. 106: 341-397. DOI: 10.1086/192341 |
0.662 |
|
| 1996 |
Cress CM, Helfand DJ, Becker RH, Gregg MD, White RL. The Angular Two-Point Correlation Function for the FIRST Radio Survey The Astrophysical Journal. 473: 7-14. DOI: 10.1086/178122 |
0.495 |
|
| 1996 |
Blanton EL, Helfand DJ. ASCA observations of the composite supernova remnant G29.7-0.3 Astrophysical Journal. 470: 961-966. DOI: 10.1086/177922 |
0.554 |
|
| 1996 |
Hamilton TT, Gotthelf EV, Helfand DJ. The absence of x-ray flashes from nearby galaxies and the gamma-ray burst distance scale Astrophysical Journal. 466: 795-801. DOI: 10.1086/177553 |
0.602 |
|
| 1996 |
Gotthelf EV, Hamilton TT, Helfand DJ. The Einstein Observatory detection of faint X-ray flashes Astrophysical Journal. 466: 779-794. DOI: 10.1086/177552 |
0.586 |
|
| 1996 |
Moran EC, Helfand DJ, Becker RH, White RL. The Einstein two-sigma catalog: Silver needles in the X-ray haystack Astrophysical Journal. 461: 127-145. DOI: 10.1086/177042 |
0.647 |
|
| 1996 |
Gregg MD, Becker RH, White RL, Helfand DJ, Mcmahon RG, Hook IM. The first bright QSO survey Astronomical Journal. 112: 407-415. DOI: 10.1086/118024 |
0.556 |
|
| 1995 |
Hughes JP, Hayashi I, Helfand D, Hwang U, Itoh M, Kirshner R, Koyama K, Markert T, Tsunemi H, Woo J. ASCA observations of the Large Magellanic Cloud supernova remnant sample: Typing supernovae from their remnants The Astrophysical Journal. 444: L81. DOI: 10.1086/187865 |
0.6 |
|
| 1995 |
Helfand DJ, Becker RH, White RL. The X-ray emission of 3C 58 revisited Astrophysical Journal. 453: 741-745. DOI: 10.1086/176435 |
0.605 |
|
| 1995 |
Halpern JP, Helfand DJ, Moran EC. No x-ray-luminous starbursts in the Einstein medium sensitivity survey, either Astrophysical Journal. 453: 611-615. DOI: 10.1086/176424 |
0.519 |
|
| 1995 |
Becker RH, White RL, Helfand DJ. The first survey: Faint images of the radio sky at twenty centimeters Astrophysical Journal Letters. 450: 559-577. DOI: 10.1086/176166 |
0.487 |
|
| 1995 |
Kistiakowsky V, Helfand DJ. The Identification of Galactic Plane Radio Sources: Distant Planetary Nebulae at |b|<2 Degrees The Astronomical Journal. 110: 2225. DOI: 10.1086/117683 |
0.445 |
|
| 1995 |
Helfand DJ. X Rays From the Rest of the Universe Physics Today. 48: 58-64. DOI: 10.1063/1.881441 |
0.448 |
|
| 1995 |
Kistiakowsky V, Helfand DJ. The identification of galactic plane radio sources: Distant planetary nebulae at |b|<2 degrees Astronomical Journal. 110: 2225-2234. |
0.407 |
|
| 1994 |
Helfand DJ. The Geminga enigma: how many are there in the gamma-ray sky? Monthly Notices of the Royal Astronomical Society. 267: 490-500. DOI: 10.1093/Mnras/267.3.490 |
0.528 |
|
| 1994 |
Becker RH, White RL, Helfand DJ, Zoonematkermani S. A 5 GHz VLA survey of the Galactic plane Astrophysical Journal, Supplement Series. 91: 347-387. DOI: 10.1086/191941 |
0.55 |
|
| 1994 |
Moran EC, Halpern JP, Helfand DJ. The True Nature of IRAS-selected, X-Ray--luminous ``Normal'' Galaxies in the ROSAT All-Sky Survey The Astrophysical Journal. 433. DOI: 10.1086/187549 |
0.598 |
|
| 1994 |
Helfand DJ, Becker RH, Hawkins G, White RL. The nature of the compact X-ray source in the supernova remnant G27.4+0.0 Astrophysical Journal. 434: 627-634. DOI: 10.1086/174764 |
0.634 |
|
| 1994 |
Yancopoulos S, Hamilton TT, Helfand DJ. The detection of pulsed X-ray emission from a nearby radio pulsar Astrophysical Journal. 429: 832-843. DOI: 10.1086/174367 |
0.571 |
|
| 1994 |
Moran EC, Halpern JP, Helfand DJ. The true nature of IRAS-selected, X-ray-luminous "normal" galaxies in the ROSAT all-sky survey Astrophysical Journal. 433. |
0.522 |
|
| 1993 |
Hamilton TT, Helfand DJ. The association of faint radio sources with fluctuations in the X-ray background Astrophysical Journal. 418: 55-59. |
0.537 |
|
| 1993 |
Kistiakowsky V, Helfand DJ. Observations of [S III] emission from galactic radio sources: The detection of distant planetary nebulae and a search for supernova remnant emission Astronomical Journal. 105: 2199-2210. |
0.4 |
|
| 1992 |
Helfand DJ, Zoonematkermani S, Becker RH, White RL. Compact radio sources near the galactic plane Astrophysical Journal, Supplement Series. 80: 211-255. DOI: 10.1086/191664 |
0.55 |
|
| 1992 |
Becker RH, Helfand DJ, White RL. The discovery of an X-ray selected, radio-loud quasar at z=3.9 Astronomical Journal. 104: 531-534. DOI: 10.1086/116251 |
0.666 |
|
| 1992 |
Sanbonmatsu KY, Helfand DJ. A distance determination for the supernova remnant G27.4+0.0 and its central X-ray source Astronomical Journal. 104: 2189-2192. |
0.413 |
|
| 1991 |
Wang Q, Helfand DJ. LMC-2 as the blowout of a hot superbubble Astrophysical Journal. 379: 327-337. DOI: 10.1086/170507 |
0.618 |
|
| 1991 |
Wang Q, Hamilton T, Helfand DJ, Wu X. The detection of X-rays from the hot interstellar medium of the Large Magellanic Cloud Astrophysical Journal. 374: 475-495. DOI: 10.1086/170137 |
0.639 |
|
| 1991 |
Wang Q, Helfand DJ. The detection of X-ray emission from the OB associations of the Large Magellanic Cloud Astrophysical Journal. 373: 497-508. DOI: 10.1086/170069 |
0.592 |
|
| 1991 |
White RL, Becker RH, Helfand DJ. The infrared properties of compact galactic radio sources: The young and the restless Astrophysical Journal. 371: 148-162. DOI: 10.1086/169879 |
0.535 |
|
| 1991 |
Wang Q, Helfand DJ. An X-ray image of the violent interstellar medium in 30 doradus Astrophysical Journal. 370: 541-550. DOI: 10.1086/169840 |
0.577 |
|
| 1991 |
Hamilton TT, Helfand DJ, Wu X. Faint X-ray source counts and the origin of the X-ray background Astrophysical Journal. 379: 576-585. |
0.543 |
|
| 1991 |
Wu X, Hamilton T, Helfand DJ, Wang Q. The intensity and spectrum of the diffuse X-ray background Astrophysical Journal. 379: 564-575. |
0.484 |
|
| 1990 |
Zoonematkermani S, Helfand DJ, Becker RH, White RL, Perley RA. A catalog of small-diameter radio sources in the galactic plane Astrophysical Journal, Supplement Series. 74: 181-224. DOI: 10.1086/191496 |
0.528 |
|
| 1990 |
Becker RH, White RL, Mclean BJ, Helfand DJ, Zoonematkermani S. A 20 centimeter survey of compact sources in the northern Galactic plane Astrophysical Journal. 358: 485-494. DOI: 10.1086/169002 |
0.512 |
|
| 1990 |
Chanan GA, Helfand DJ. Optical polarization of the crab-like supernova remnant 0540-693 in the large Magellanic cloud Astrophysical Journal. 352: 167-171. DOI: 10.1086/168524 |
0.342 |
|
| 1989 |
Helfand DJ, Velusamy T, Becker RH, Lockman FJ. The Prevalence of Supernova Remnants among Unidentified Galactic Radio Sources The Astrophysical Journal. 341: 151-162. DOI: 10.1086/167479 |
0.521 |
|
| 1989 |
Wang Q, Hamilton T, Helfand DJ. The hot interstellar medium toward SN1987A Nature. 341: 309-311. DOI: 10.1038/341309A0 |
0.562 |
|
| 1989 |
Velusamy T, Becker RH, Goss WM, Helfand DJ. Thick radio shell in supernova remnant DA 495 (G 65.7+ 1.2)? Journal of Astrophysics and Astronomy. 10: 161-172. DOI: 10.1007/Bf02719313 |
0.527 |
|
| 1987 |
Hamilton TT, Helfand DJ. The origin of the diffuse X-ray background The Astrophysical Journal. 318: 93. DOI: 10.1086/165353 |
0.52 |
|
| 1987 |
Helfand DJ. New millisecond pulsar in an unusual environment Nature. 329: 285-286. DOI: 10.1038/329285A0 |
0.301 |
|
| 1986 |
Vrtilek SD, Helfand DJ, Halpern JP, Kahn SM, Seward FD. X-ray emission lines from three Galactic bulge sources The Astrophysical Journal. 308: 644-654. DOI: 10.1086/164535 |
0.621 |
|
| 1986 |
Vrtilek SD, Kahn SM, Grindlay JE, Seward FD, Helfand DJ. Spectral variability of Cygnus X-2 - Structure in the circumsource material The Astrophysical Journal. 307: 698-710. DOI: 10.1086/164455 |
0.53 |
|
| 1986 |
Caillault JP, Helfand DJ, Nousek JA, Takalo LO. X-ray-selected M dwarfs and the diffuse X-ray background The Astrophysical Journal. 304: 318. DOI: 10.1086/164166 |
0.598 |
|
| 1986 |
Chanan GA, Helfand DJ, Spinrad H, Ebneter K. Extragalactic nature of G227.1 + 1.0 Nature. 320: 41-42. DOI: 10.1038/320041A0 |
0.534 |
|
| 1985 |
Hughes JP, Helfand DJ. Self-consistent models for the X-ray emission from supernova remnants: an application to Kepler's remnant The Astrophysical Journal. 291: 544-560. DOI: 10.1086/163095 |
0.629 |
|
| 1985 |
Caillault J-, Helfand DJ. The Einstein soft X-ray survey of the Pleiades. The Astrophysical Journal. 289: 279-299. DOI: 10.1086/162888 |
0.575 |
|
| 1985 |
Kriss GA, Becker RH, Helfand DJ, Canizares CR. G27.4+0.0 - A galactic supernova remnant with a central compact source The Astrophysical Journal. 288: 703. DOI: 10.1086/162836 |
0.595 |
|
| 1985 |
Caillault JP, Chanan GA, Helfand DJ, Patterson J, Nousek JA, Takalo LO, Bothun GD, Becker RH. The peculiar X-ray and radio star AS431 Nature. 313: 376-378. DOI: 10.1038/313376A0 |
0.816 |
|
| 1985 |
Helfand DJ, Becker RH. Origin of the new axisymmetric radio sources Nature. 313: 118-119. DOI: 10.1038/313118a0 |
0.353 |
|
| 1985 |
Becker RH, Helfand DJ. A new class of nonthermal radio sources Nature. 313: 115-118. DOI: 10.1038/313115a0 |
0.438 |
|
| 1985 |
Novick R, Chanan G, Helfand DJ. X-RAY POLARIMETRY ON XMM European Space Agency, (Special Publication) Esa Sp. 265-275. |
0.413 |
|
| 1984 |
Chanan GA, Helfand DJ, Reynolds SP. An optical synchrotron nebula around the X-ray pulsar 0540-693 in the Large Magellanic Cloud The Astrophysical Journal. 287. DOI: 10.1086/184389 |
0.373 |
|
| 1984 |
Seward FD, Harnden FR, Helfand DJ. Discovery of a 50 millisecond pulsar in the Large Magellanic Cloud The Astrophysical Journal. 287. DOI: 10.1086/184388 |
0.556 |
|
| 1984 |
Hughes JP, Helfand DJ, Kahn SM. Interpretation of the number versus diameter distribution for supernova remnants in the Large Magellanic Cloud The Astrophysical Journal. 281: L25. DOI: 10.1086/184277 |
0.609 |
|
| 1984 |
Cowley AP, Crampton D, Hutchings JB, Helfand DJ, Hamilton TT, Thorstensen JR, Charles PA. Optical counterparts of the Large Magellanic Cloud X-ray point sources The Astrophysical Journal. 286: 196. DOI: 10.1086/162587 |
0.662 |
|
| 1984 |
Caillault JP, Helfand DJ. The EINSTEIN soft X-ray survey of the Pleiades. Publications of the Astronomical Society of the Pacific. 96: 785. DOI: 10.1086/131423 |
0.5 |
|
| 1984 |
Helfand DJ, Becker RH. Observation of stellar remnants from recent supernovae Nature. 307: 215-221. DOI: 10.1038/307215A0 |
0.552 |
|
| 1984 |
Helfand DJ. X-ray synchrotron nebulae and the origin of neutron stars Advances in Space Research. 3: 29-34. DOI: 10.1016/0273-1177(84)90055-3 |
0.497 |
|
| 1983 |
Helfand DJ, Ruderman MA, Shaham J. X-ray emission and spin-up evolution of the 6.1-ms pulsar Nature. 304: 423-425. DOI: 10.1038/304423A0 |
0.508 |
|
| 1983 |
Helfand DJ, Vrtilek SD. Constraints on γ-ray bursters from soft X-ray transients Nature. 304: 41-43. DOI: 10.1038/304041A0 |
0.559 |
|
| 1983 |
Becker RH, Helfand DJ. High-resolution X-ray and radio maps of the millisecond pulsar [8] Nature. 302: 688-690. DOI: 10.1038/302688A0 |
0.602 |
|
| 1982 |
Chanan GA, Downes RA, Chance D, Margon B, Helfand DJ. Two X-ray selected BL Lacertae candidates The Astrophysical Journal. 261. DOI: 10.1086/183883 |
0.585 |
|
| 1982 |
Helfand DJ, Caillault J-. An unbiased survey of field star X-ray emission The Astrophysical Journal. 253: 760-767. DOI: 10.1086/159678 |
0.634 |
|
| 1981 |
Helfand DJ, Becker RH, Novick R. On Synchrotron Nebulae and Pulsars Space Science Reviews. 30: 263-263. DOI: 10.1007/978-94-010-9949-3_35 |
0.545 |
|
| 1981 |
Helfand DJ, Long KS. A Soft X-Ray Study of the Large Magellanic Cloud Space Science Reviews. 30: 141-141. DOI: 10.1007/978-94-010-9949-3_19 |
0.663 |
|
| 1980 |
Ku WH-, Helfand DJ, Lucy LB. X-ray properties of quasars Nature. 288: 323-328. DOI: 10.1038/288323A0 |
0.6 |
|
| 1980 |
Helfand DJ. X-ray images of supernova remnants Nature. 285: 133-134. DOI: 10.1038/285133A0 |
0.458 |
|
| 1980 |
Helfand DJ, Chanan GA, Novick R. Thermal x-ray emission from neutron stars Nature. 283: 337-343. DOI: 10.1038/283337A0 |
0.527 |
|
| 1979 |
Giacconi R, Branduardi G, Briel U, Epstein A, Fabricant D, Feigelson E, Forman W, Gorenstein P, Grindlay J, Gursky H, Harnden FR, Henry JP, Jones C, Kellogg E, Koch D, ... ... Helfand D, et al. The Einstein /HEAO 2/ X-ray Observatory The Astrophysical Journal. 230: 540-550. DOI: 10.1086/157110 |
0.503 |
|
| 1979 |
Helfand DJ, Long KS. X-ray observations of the 5 March 1979 γ-burst field [2] Nature. 282: 589-591. DOI: 10.1038/282589A0 |
0.525 |
|
| 1979 |
Helfand DJ. Neutrinos from neutron stars [2] Nature. 278: 720-721. DOI: 10.1038/278720A0 |
0.487 |
|
| 1978 |
Helfand DJ. Recent observations of pulsars American Scientist. 66: 332-339. |
0.33 |
|
| 1977 |
Helfand DJ, Tademaru E. Tugboat model for OB binaries, X-ray stars and pulsars [5] Nature. 267: 130-131. DOI: 10.1038/267130A0 |
0.518 |
|
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