Soft X-ray emissions from planets, moons, and comets

Bhardwaj, A.; Gladstone, G. R.; Elsner, R. F.; Waite, J H, Jr; Grodent, Denis; Cravens, T. E.; Howell, R. R.; Metzger, A. E.; Ostgaard, N.; Maurellis, A. N.; Johnson, R. E.; Weisskopf, M. C.; Majeed, T.; Ford, P. G.; Tennant, A. F.; Clarke, J. T.; Lewis, W. S.; Hurley, K. C.; Crary, F. J.; Feigelson, E. D.; Garmire, G. P.; Young, D. T.; Dougherty, M. K.; Espinosa, S. A.; Jahn, J*-M; Battrick, Bruce; Foing, Bernard H

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Soft X-ray emissions from planets, moons, and comets

Bhardwaj, A.; Gladstone, G. R.; Elsner, R. F. et al.

2002 • Earth-like Planets and Moons

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Keywords :

X Rays: Planets; Moons; Comets

Abstract :

[en] A wide variety of solar system bodies are now known to radiate in the soft X-ray energy (<5 keV) regime. These include planets (Earth, Jupiter, Venus, Saturn, Mars): bodies having thick atmospheres, with or without intrinsic magnetic field; planetary satellites (Moon, Io, Europa, Ganymede): bodies with thin or no atmospheres; and comets and Io plasma torus: bodies having extended tenuous atmospheres. Several different mechanisms have been proposed to explain the generation of soft X-rays from these objects, whereas in the hard X-ray energy range (>10 keV) X-rays mainly result from the electron bremsstrahlung process. In this paper we present a brief review of the X-ray observations on each of the planetary bodies and discuss their characteristics and proposed source mechanisms.

Disciplines :

Space science, astronomy & astrophysics

Author, co-author :

Bhardwaj, A.

Gladstone, G. R.

Elsner, R. F.

Waite, J H, Jr

Grodent, Denis ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)

Cravens, T. E.

Howell, R. R.

Metzger, A. E.

Ostgaard, N.

Maurellis, A. N.

More authors (17 more)

Language :

English

Title :

Soft X-ray emissions from planets, moons, and comets

Publication date :

2002

Event name :

Earth-like Planets and Moons

Audience :

International

Commentary :

514 215-226

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since 22 August 2011

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