Is RXJ1856.5-3754 an old neutron star?
| dc.creator | Campana, S. | |
| dc.creator | Mereghetti, S. | |
| dc.creator | Sidoli, L. | |
| dc.date | 1996-10-01 | |
| dc.date.accessioned | 2026-07-07T02:21:59Z | |
| dc.date.available | 2026-07-07T02:21:59Z | |
| dc.description | An unusual X-ray source, RXJ1856.5-3754, has recently been discovered with ROSAT: its spectrum resembles that of supersoft sources, but the very high X-ray to optical flux ratio excludes the presence of a companion star, pointing to an isolated compact object. It has been proposed that RXJ1856.5-3754 is an old, isolated neutron star accreting from the interstellar medium. Here we present a reanalysis of the ROSAT data. The HRI observation reveals an attitude reconstruction problem, resulting in a larger error box than previously reported. Deeper optical observations allow us to reveal a few optical counterparts inside the new error box, but the X-ray to optical flux ratio is still very high (greater than 20) and none of the candidates has peculiar colors. | |
| dc.description | 5 pages and 2 figures, tex file, laa+psfig macros. Accepted for publication in A&A Main Journal | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9610004 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9610004 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/10711 | |
| dc.subject | Astrophysics | |
| dc.title | Is RXJ1856.5-3754 an old neutron star? | |
| dc.type | text |