Interaction of solar flare X-rays with the atmosphere of Titan

Banaszkiewicz, M. and Zarnecki, J.C. (1999) Interaction of solar flare X-rays with the atmosphere of Titan. Planetary and Space Science, 47 (1-2). pp. 35-44. ISSN 0032-0633. (The full text of this publication is not available from this repository)

The full text of this publication is not available from this repository. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1016/S0032-0633(98)00105-6

Abstract

During solar flares an intense flux of X-rays is emitted into space. When it reaches Saturn's orbit, it is still strong enough to significantly disturb Titan's dense atmosphere. The main effect is to ionize the neutral component of the atmosphere and to increase, therefore, the electron and ion density at altitudes of 400-900 km. Especially near a maximum of the solar cycle, when flare activity is high, the average plasma density can, for long intervals, remain at a level of a few tens of particles per cm(3). As a result, the atmospheric photochemistry will be affected, but also an increase of production rate of small haze particles might be expected. Ionized atoms are usually excited; when they relax to the ground level in the process of resonant fluorescence, Titan's albedo at specific wavelengths increases. It is estimated that at Earth orbit the flux of photons emitted from Titan in the 3 KeV argon line during a strong X1-type Rare is equal to 1.6 x 10(-20) J m(-2) s(-1) for 10% Ar abundance in Titan's atmosphere. (C) 1999 Elsevier Science Ltd. All rights reserved.

Item Type: Article
Subjects: T Technology > TL Motor vehicles. Aeronautics. Astronautics
Q Science > QC Physics
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences > Centre for Astrophysics and Planetary Sciences
Depositing User: M. Nasiriavanaki
Date Deposited: 23 Jul 2009 08:11
Last Modified: 23 Jul 2009 08:11
Resource URI: http://kar.kent.ac.uk/id/eprint/17046 (The current URI for this page, for reference purposes)
  • Depositors only (login required):