Astronomy and Astrophysics – Astrophysics
Scientific paper
1995-05-05
Ap. J. Lett. 451 (1995) L21
Astronomy and Astrophysics
Astrophysics
10 pages, AASTeX latex, + 3 figures (compressed 7 uuencoded). Submitted to Ap. J. Lett
Scientific paper
10.1086/309675
We present a model to explain the decrease in the amplitude of the pulse profile with increasing energy observed in Geminga's soft X-ray surface thermal emission. We assume the presence of plates surrounded by a surface with very distinct physical properties: these two regions emit spectra of very distinct shapes which present a crossover, the warm plates emitting a softer spectrum than the colder surrounding surface. The strongly pulsed emission from the plates dominates at low energy while the surroundings emission dominates at high energy, producing naturally a strong decrease in the pulsed fraction. In our illustrative example the plates are assumed to be magnetized while the rest of the surface is field free. This plate structure may be seen as a schematic representation of a continuous but very nonuniform distribution of the surface magnetic field or as a quasi realistic structure induced by past tectonic activity on Geminga.
Page Dany
Shibanov Yu. A.
Zavlin Vyacheslav E.
No associations
LandOfFree
GEMINGA'S SOFT X-RAY EMISSION AND THE STRUCTURE OF ITS SURFACE does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with GEMINGA'S SOFT X-RAY EMISSION AND THE STRUCTURE OF ITS SURFACE, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and GEMINGA'S SOFT X-RAY EMISSION AND THE STRUCTURE OF ITS SURFACE will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-405829