To Understand the UV-optical Excess of RX J1856.5-3754
| dc.creator | Yue, Y. L. | |
| dc.creator | Cui, X. H. | |
| dc.creator | Xu, R. X. | |
| dc.date | 2005-10-02 | |
| dc.date.accessioned | 2026-07-07T06:20:15Z | |
| dc.date.available | 2026-07-07T06:20:15Z | |
| dc.description | The enigma source, RX J1856.5-3754, is one of the so-called dim thermal neutron stars. Two puzzles of RXJ1856.5-3754 exist: (1) the observational X-ray spectrum is completely featureless; (2) the UV-optical intensity is about seven times larger than that given by the continuation of the blackbody model yielded by the X-ray data. Both the puzzles would not exist anymore if RX J1856.5-3754 is a low mass bare strange quark star, which is in a propeller phase with a low accretion rate. A boundary layer of RX J1856.5-3754 is suggested and modelled, from which the UV-optical emission is radiated. Free-free absorption dominates the opacity of the boundary layer, which results in the opacity to be high in UV-optical but low in X-ray bands. The star's magnetic field, spin period, as well as the accretion rate are constrained by observations. | |
| dc.description | 12 pages, 3 figures, or at: http://vega.bac.pku.edu.cn/rxxu/publications/index_P.htm | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0510020 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0510020 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/95278 | |
| dc.subject | Astrophysics | |
| dc.title | To Understand the UV-optical Excess of RX J1856.5-3754 | |
| dc.type | text |