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Discovery of an unidentified fermi object as a black widow-like millisecond pulsar
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kataoka, J. Yatsu, Y. Hui, C. Y. Maeda, K. Lin, L. C. C. Cheung, C. C. Kong, A. K. H. Cheng, K. S. Takata, J. Huang, R. H. H. Tam, P. H. T. Donato, D. Takahashi, Y. |
| Copyright Year | 2012 |
| Description | 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. |
| File Size | 162958 |
| Page Count | 6 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20120013106 |
| Archival Resource Key | ark:/13960/t48q1107s |
| Language | English |
| Publisher Date | 2012-01-19 |
| Access Restriction | Open |
| Subject Keyword | Astrophysics Gamma Rays Gamma Ray Telescopes Stellar Mass Pulsar Magnetospheres Pulsars Visual Observation Luminosity Spaceborne Telescopes Companion Stars X Ray Astrophysics Facility Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
