| タイトル | Discovery of an Unidentified Fermi Object as a Black Widow-Like Millisecond Pulsar |
| 本文（外部サイト） | http://hdl.handle.net/2060/20120013106 |
| 著者（英） | Tam, P. H. T.; Takata, J.; Hui, C. Y.; Lin, L. C. C.; Kong, A. K. H.; Yatsu, Y.; Huang, R. H. H.; Cheung, C. C.; Cheng, K. S.; Takahashi, Y.; Maeda, K.; Donato, D.; Kataoka, J. |
| 著者所属（英） | National Tsing Hua Univ. |
| 発行日 | 2012-01-19 |
| 言語 | eng |
| 内容記述 | The Fermi Gamma-ray Space Telescope has revolutionized our knowledge of the gamma-ray pulsar population, leading to the discovery of almost 100 gamma-ray pulsars and dozens of gamma-ray millisecond pulsars (MSPs). Although the outer-gap model predicts different sites of emission for the radio and gamma-ray pulsars, until now all of the known gamma-ray MSPs have been visible in the radio. Here we report the discovery of a radio-quiet" gamma-ray emitting MSP candidate by using Fermi, Chandra, Swift, and optical observations. The X-ray and gamma-ray properties of the source are consistent with known gamma-ray pulsars. We also found a 4.63-hr orbital period in optical and X-ray data. We suggest that the source is a black widow-like MSP with a approx. 0.1 Stellar Mass late-type companion star. Based on the profile of the optical and X-ray light-curves, the companion star is believed to be heated by the pulsar while the X-ray emissions originate from pulsar magnetosphere and/or from intra-binary shock. No radio detection of the source has been reported yet and although no gamma-ray/radio pulsation has been found, we estimated that the spin period of the MSP is approx. 3-5 ms based on the inferred gamma-ray luminosity. |
| NASA分類 | Astrophysics |
| レポートNO | GSFC.JA.6249.2012 |
| 権利 | Copyright, Distribution under U.S. Government purpose rights |
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