|
| | | | |
| | | |
| Stat |
Members: 3664
Articles: 2'599'751
Articles rated: 2609
26 December 2024 |
|
| | | | |
|
Article overview
| |
|
|
Automatic quenching of high energy gamma-ray sources by synchrotron photons | | L. Stawarz
; J. Kirk
; | | Date: |
22 Jan 2007 | | Abstract: | Here we investigate evolution of a magnetized system, in which continuously produced high energy emission undergoes annihilation on a soft photon field, such that the synchrotron radiation of the created electron-positron pairs increases number density of the soft photons. This situation is important in high energy astrophysics, because, for an extremely wide range of magnetic field strengths (nano to mega Gauss), it involves gamma-ray photons with energies between 0.3 GeV and 30 TeV. We derive and analyze the conditions for which the system is unstable to runaway production of soft photons and ultrareltivistic electrons, and for which it can reach a steady state with an optical depth to photon-photon annihilation larger than unity, as well those for which efficient pair loading of the emitting volume takes place. We also discuss the application of our analysis to a realistic situation involving astrophysical sources of a broad-band gamma-ray emission and briefly consider the particular case of sources close to active supermassive black holes. | | Source: | arXiv, astro-ph/0701633 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
|
| |
|
|
|
REGISTER