| 词条 | 1E 161348-5055 |
| 释义 |
| image= | caption=1E 161348-5055 at the centre of RCW 103 | credit=NASA/CXC/Penn State/G.Garmire et al }}{{Starbox observe | epoch = J2000 | constell = Norma | ra = {{RA|16|17|36.30}}[1] | dec = {{DEC|-51|02|26.6}}[1] }}{{Starbox character |class=Neutron star |appmag_1_passband=H |appmag_1=14.666[1] |appmag_2_passband=K |appmag_2=13.755[1] }}{{Starbox catalog |names=1E161348-5055, 2E 3623, INTREF 682, 2MASS J16173630-5102265}}{{Starbox reference |Simbad=INTREF+682}}{{Starbox end}} 1E 161348-5055.1, commonly shortened to 1E 161348-5055, is a neutron star found in the centre of RCW103 supernova remnant. It is a periodic X-ray source with a period of 6.67 hours. It is approximately 2000 years old. It is 10,000 light years away in the constellation Norma. The star was discovered by the Einstein Observatory. This star is unusual because of its rotation period of 6.7 hours. Its period is too long for a star of 2000 years, which should be rotating thousands of times faster. Instead, it is behaving more like a multi-million-year-old star. Another oddity occurred between October 1999 and January 2000. The star became 50 times brighter. The flare has faded since its peak but has not returned to its pre-1999 level. Two theories have been put forward to explain these phenomena. The first is that the star possesses a massive magnetic field. This strong field would brake against the debris disk left behind by the supernova, which has thus far been unknown to science. This theory would account for the slower than expected rotation but not for the increase in brightness. An alternate explanation is that the star has a low-mass X-ray binary. The companion star would orbit in an elongated orbit. When the companion is close to the neutron star, it would feed mass into it, creating the increased brightness. The drag created by the companion on the neutron star's magnetic field would also slow the rotation of the neutron star. If this scenario is the case, it is the youngest such system yet observed. References{{refbegin}}
1. ^1 2 3 {{cite simbad|title=1E 161348-5055.1}} External links
2 : Neutron stars|Norma (constellation) |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。