| Issue |
A&A
Volume 482, Number 3, May II 2008
|
|
|---|---|---|
| Page(s) | 879 - 882 | |
| Section | Stellar structure and evolution | |
| DOI | https://doi.org/10.1051/0004-6361:20078626 | |
| Published online | 20 February 2008 | |
Research Note
High-energy nonthermal radiation from putative Geminga-like gamma-ray pulsars
1
Department of Physics, Yunnan University, Kunming, 650091 Yunnan, PR China e-mail: zjjiang@ynu.edu.cn
2
Department of Physics, Yunnan Normal University, Kunming, 650092 Yunnan, PR China
Received:
6
September
2007
Accepted:
18
January
2008
Aims. The gamma-ray spectra of some unidentified Galactic sources show that the corresponding counterparts are likely gamma-ray pulsars. We investigate the possibility of some Geminga-like gamma-ray pulsars as the counterparts of unidentified sources.
Methods. There are five Geminga-like gamma-ray pulsar candidates associated with 3EG J0010+7309, 3EG J1835+5918, 3EG J2020+4017, 3EG J0616-3310, and 3EG J1249-8330. Combining the observed nonthermal X-ray emission detected by Chandra or XMM-Newton and the gamma-ray emission by EGRET, we study the high-energy radiation from these putative pulsars based on the revised vacuum outer gap model.
Results. By comparing the estimated spectra with the observations, we estimated the spin parameters and the inclination angles for these five putative pulsars. The observed spectra of the unidentified gamma-ray sources can be explained by this outer gap model.
Key words: pulsars: general / gamma rays: theory / radiation mechanisms: non-thermal
© ESO, 2008
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.