Zobrazeno 1 - 10
of 990
pro vyhledávání: '"Gurnett, D. A."'
In 2012, Voyager 1 became the first in situ probe of the very local interstellar medium. The Voyager 1 Plasma Wave System has given point estimates of the plasma density spanning about 30 astronomical units (au) of interstellar space, revealing a lar
Externí odkaz:
http://arxiv.org/abs/2105.04000
Autor:
Chu, F., Girazian, Z., Duru, F., Ramstad, R., Halekas, J., Gurnett, D. A., Cao, Xin, Kopf, A. J.
Due to the lower ionospheric thermal pressure and existence of the crustal magnetism at Mars, the Martian ionopause is expected to behave differently from the ionopause at Venus. We study the solar wind interaction and pressure balance at the ionopau
Externí odkaz:
http://arxiv.org/abs/2103.12785
Autor:
Girazian, Z., Luppen, Z., Morgan, D. D., Chu, F., Montabone, L., Thiemann, E. M. B., Gurnett, D. A., Halekas, J., Kopf, A. J., Nemec, F.
Previous observations have shown that, during Martian dust storms, the peak of the ionosphere rises in altitude. Observational studies of this type, however, have been extremely limited. Using 13 years of ionospheric peak altitude data from the Mars
Externí odkaz:
http://arxiv.org/abs/1906.07111
We use Mars Atmosphere and Volatile EvolutioN observations of the upstream solar wind, and Mars Express observations of ionospheric electron densities and magnetic fields, to study how the topside ionosphere ($>$ 320 km) of Mars is affected by variat
Externí odkaz:
http://arxiv.org/abs/1905.12011
Autor:
Chu, F., Girazian, Z., Gurnett, D. A., Morgan, D. D., Halekas, J., Kopf, A. J., Thiemann, E. M. B., Duru, F.
Publikováno v:
Geophysical Research Letters, 46 (2019)
We study the ionopause of Mars using a database of 6,893 ionopause detections obtained over 11 years by the MARSIS (Mars Advanced Radar for Subsurface and Ionosphere Sounding) experiment. The ionopause, in this work, is defined as a steep density gra
Externí odkaz:
http://arxiv.org/abs/1903.10473
The interaction between the solar wind and a magnetosphere is fundamental to the dynamics of a planetary system. Here, we address fundamental questions on the large-scale magnetosheath flow around Saturn using a 3D magnetohydrodynamic (MHD) simulatio
Externí odkaz:
http://arxiv.org/abs/1708.08818
Autor:
Pogorelov, N. V., Heerikhuisen, J., Roytershteyn, V., Burlaga, L. F., Gurnett, D. A., Kurth, W. S.
The heliosphere is formed due to interaction between the solar wind (SW) and local interstellar medium (LISM). The shape and position of the heliospheric boundary, the heliopause, in space depend on the parameters of interacting plasma flows. The int
Externí odkaz:
http://arxiv.org/abs/1706.09637
Autor:
Duru, F., Gurnett, D. A., Morgan, D. D., Halekas, J., Frahm, R. A., Lundin, R., Dejong, W., Ertl, C., Venable, A., Wilkinson, C., Fraenz, M., Nemec, F., Connerney, J. E. P., Espley, J. R., Larson, D., Winningham, J. D., Plaut, J., Mahaffy, P. R.
In a two-week period between February and March of 2015, a series of interplanetary coronal mass ejections (ICMEs) and (solar energetic particles) SEPs made contact with Mars. The interactions were observed by several spacecraft, including Mars Expre
Externí odkaz:
http://arxiv.org/abs/1610.08538
Autor:
Andrews, D. J., Barabash, S., Edberg, N. J. T., Gurnett, D. A., Hall, B. E. S., Holmström, M., Lester, M., Morgan, D. D., Opgenoorth, H. J., Ramstad, R., Sanchez-Cano, B., Way, M., Witasse, O.
Publikováno v:
J. Geophys. Res. Space Physics 121 (2016)
We present initial analysis and conclusions from plasma observations made during the reported "Mars plume event" of March - April 2012. During this period, multiple independent amateur observers detected a localized, high-altitude "plume" over the Ma
Externí odkaz:
http://arxiv.org/abs/1603.05906
Autor:
Fischer, G., Dyudina, U. A., Kurth, W. S., Gurnett, D. A., Zarka, P., Barry, T., Delcroix, M., Go, C., Peach, D., Vandebergh, R., Wesley, A.
Publikováno v:
Planetary Radio Emissions VII, H. O. Rucker, W. S. Kurth, P. Louarn, G. Fischer (eds.), Austrian Academy of Sciences Press, Vienna, 135-144, 2011
The lightning activity in Saturn's atmosphere has been monitored by Cassini for more than six years. The continuous observations of the radio signatures called SEDs (Saturn Electrostatic Discharges) combine favorably with imaging observations of rela
Externí odkaz:
http://arxiv.org/abs/1111.4919