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Dive into the research topics where N. Gopalswamy is active.

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Featured researches published by N. Gopalswamy.


The Astrophysical Journal | 1993

Simultaneous observations of solar plage with the solar extreme ultraviolet rocket telescope and spectrograph (SERTS), the VLA, and the kitt peak magnetograph

Jeffrey W. Brosius; Joseph M. Davila; William T. Thompson; Roger J. Thomas; Gordon D. Holman; N. Gopalswamy; Stephen M. White; M. R. Kundu; Harrison P. Jones

We obtained simultaneous images of solar plage on 1991, May 7 with SERTS, the VLA,4 and the NASA/National Solar Observatory spectromagnetograph at the NSO/Kitt Peak Vacuum Telescope. Using intensity ratios of Fe XVI to Fe XV emission lines, we find that the coronal plasma temperature is (2.3-2.9) x 10 exp 6 K throughout the region. The column emission measure ranges from 2.5 x 10 exp 27 to l.3 x 10 exp 28 cm exp -5. The calculated structure and intensity of the 20 cm wavelength thermal bremsstrahlung emission from the hot plasma observed by SERTS is quite similar to the observed structure and intensity of the 20 cm microwave emission observed by the VLA. Using the Meyer (1991, 1992) revised coronal iron abundance, we find no evidence either for cool absorbing plasma or for contributions from thermal gyroemission. Using the observed microwave polarization and the SERTS plasma parameters, we calculate a map of the coronal longitudinal magnetic field. The resulting values, about 30-60 G, are comparable to extrapolated values of the potential field at heights of 5000 and 10,000 km.


Archive | 2009

Education and Public Outreach

B. J. Thompson; N. Gopalswamy; Joseph M. Davila; Hans J. Haubold

Education and Public Outreach at ASU’s Julie Ann Wrigley Global Institute of Sustainability provides real-world learning experiences for undergraduate and graduate students at ASU, as well as support for local K-12 teachers. Our program, provided through the Sustainability Teachers’ Academy, pairs select ASU students with teachers of any subject to promote sustainability science in local classrooms, schools and communities.


Archive | 2009

Putting the “I” in IHY

B. J. Thompson; N. Gopalswamy; Joseph M. Davila; Hans J. Haubold


Archive | 1999

17 GHz Mode Coupling in the Solar Corona

Alejandro Lara; N. Gopalswamy; Raul Perez-Enriquez; Kiyoto Shibasaki


Archive | 1992

Models of coronal streamers at meter-decameter wavelengths

E. J. Schmahl; N. Gopalswamy; M. R. Kundu


Archive | 1996

Three Part Structure of a CME Revealed by X-Ray and Microwave Observations

N. Gopalswamy; Mukul R. Kundu; Alejandro Lara; Yoichiro Hanaoka; Shinzo Enome; James R. Lemen; Maki Akioka


Archive | 1996

VLA Observations of a Solar Active Region at 6.2 and 3.5 CM Wavelength Compared with Model Calculations

J. D. Hildebrandt; Andreas J. Kruger; N. Gopalswamy; J.-P. Raulin; Mukul R. Kundu


Archive | 2011

Global Cooperation in the Science of Sun-Earth Connection

N. Gopalswamy; Joseph M. Davila


Archive | 2009

Comission 49: Interplanetary plasma and heliosphere. TRIENNIAL REPORT 2006 - 2009

J.-L. Bougeret; Rudolf von Steiger; David F. Webb; Subramanian Ananthakrishnan; Hillary V. Cane; N. Gopalswamy; S. W. Kahler; R. Lallement; Blai Sanahuja i Parera; Kazunari Shibata; Marek Vandas; Frank Verheest


Archive | 2009

Universal heliophysical processes : proceedings of the 257th symposium of the International Astronomical Union held in Ioannina, Greece, September 15-19, 2008

N. Gopalswamy; David Webb

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Joseph M. Davila

Goddard Space Flight Center

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B. J. Thompson

Goddard Space Flight Center

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Gordon D. Holman

Goddard Space Flight Center

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Harrison P. Jones

Goddard Space Flight Center

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Joan T. Schmelz

Goddard Space Flight Center

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