Robert A. Helliwell

Affiliations:

Electrical engineering

Stanford University, Palo Alto, CA

Area:

Whistlers and Related Ionospheric Phenomena

Website:

http://news.stanford.edu/news/2011/may/robert-helliwell-obit-052011.html

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"Robert A. Helliwell"

Bio:

(1920 - 2011)
http://www.nasonline.org/member-directory/deceased-members/54691.html
http://purl.stanford.edu/yd991zt8254 Particular mention should be made of Professors Joseph S. Carroll and William G. Hoover, whose help in the design and construction of the high-voltage equipment was invaluable. The author is likewise indebted to Professor Frederick E. Terman, Dean of the School of Engineering; Professor Hugh H. Skilling, Executive Head of the Department of Electrical Engineering; and Professor Karl Spangenberg for their helpful suggestions. Thanks are due Professors Laurence A. Manning and Oswald G. Villard, Jr. for their many stimulating comments
https://en.wikipedia.org/wiki/Robert_Helliwell

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Parents

William George Hoover	grad student	1948	Stanford (E-Tree)
Hugh Hildreth Skilling	grad student	1948	Stanford (E-Tree)
(Ionospheric virtual height measurements at 100 kilocycles.)
Karl R. Spangenberg	grad student	1948	Stanford
Frederick E. Terman	grad student	1948	Stanford (Computer Science Tree)

Children

Laurence Albert Manning	research assistant	1949	Stanford (E-Tree)
H Myron Swarm	grad student	1960	Stanford (E-Tree)
Timothy F. Bell	grad student	1964	Stanford
Umran S. Inan	grad student	1977	Stanford
Vikas Shankarrao Sonwalkar	grad student	1986	Stanford (Astronomy Tree)

Collaborators

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Publications

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Helliwell RA. (2000) Triggering of whistler mode emissions by the band‐limited impulse (BLI) Associated with amplified Vlf signals from Siple Station, Antarctica Geophysical Research Letters. 27: 1455-1458
Bell TF, Inan US, Helliwell RA, et al. (2000) Simultaneous triggered VLF emissions and energetic electron distributions observed on POLAR with PWI and HYDRA Geophysical Research Letters. 27: 165-168
Sonwalkar VS, Carpenter DL, Helliwell RA, et al. (1997) Properties of the magnetospheric hot plasma distribution deduced from whistler mode wave injection at 2400 Hz: Ground‐based detection of azimuthal structure in magnetospheric hot plasmas Journal of Geophysical Research: Space Physics. 102: 14363-14380
Carpenter DL, Sonwalkar VS, Helliwell RA, et al. (1997) Probing properties of the magnetospheric hot plasma distribution by whistler mode wave injection at multiple frequencies: Evidence of spatial as well as temporal wave growth Journal of Geophysical Research: Space Physics. 102: 14355-14362
Helliwell RA. (1995) The role of the Gendrin mode of VLF propagation in the generation of magnetospheric emissions Geophysical Research Letters. 22: 2095-2098
Sonwalkar VS, Inan US, Bell TF, et al. (1994) Simultaneous observations of VLF ground transmitter signals on the DE 1 and COSMOS 1809 satellites: Detection of a magnetospheric caustic and a duct Journal of Geophysical Research. 99: 17511
Fraser-Smith AC, McGill PR, Helliwell RA, et al. (1994) Ultra low frequency magnetic field measurements in southern California during the Northridge Earthquake of 17 January 1994 Geophysical Research Letters. 21: 2195-2198
Bell TF, Inan US, Lauben D, et al. (1994) DE‐1 and COSMOS 1809 observations of lower hybrid waves excited by VLF whistler mode waves Geophysical Research Letters. 21: 653-656
Sonwalkar VS, Inan US, Bell TF, et al. (1994) DE 1 VLF observations during activity wave injection experiments Journal of Geophysical Research. 99: 6173-6186
Bell TF, Helliwell RA, Inan US, et al. (1993) The heating of suprathermal ions above thunderstorm cells Geophysical Research Letters. 20: 1991-1994