Neutron stars are the collapsed cores of supergiant stars.[1] They are created as a result of supernovas and gravitational collapse,[2] and are the second smallest and densest class of stellar objects.[3] In the cores of these stars, protons and electrons combine to form neutrons.[2] Neutron stars can be classified as pulsars if they are magnetized, if they rotate, and if they emit beams of electromagnetic radiation out of their magnetic poles.[4]
Neutron stars
edit- Magnetar (SGR 1806−20 )
- Soft gamma repeater (SGR)
- The Magnificent Seven (neutron stars)
- Radio-quiet neutron star ( RCW 103 ,Calvera (X-ray source) )
- Cosmic Cannonball
Pulsars
edit- Radio pulsar
- Recycled pulsar PSR B1937+21
- Low mass X-ray pulsar (LMXP)
- Accretion-powered pulsar
| Name | Constellation |
|---|---|
| Black Widow Pulsar | |
| Crab Pulsar | Taurus[5] |
| Hand of God pulsar | Circinus[6] |
| PSR B0329+54 | |
| PSR B0943+10 | |
| PSR B1257+12 | Virgo[7] |
| PSR B1257+12 A | |
| PSR B1257+12 B | |
| PSR B1257+12 C | |
| PSR B1620−26 | |
| PSR B1828−11 | |
| PSR B1919+21 | |
| PSR B1937+21 | Vulpecula[8] |
| PSR J0348+0432 | |
| PSR J0737−3039 | |
| PSR J0740+6620 | |
| PSR J0952–0607 | Sextans[9] |
| PSR J1311–3430 | Centaurus[10] |
| PSR J1614−2230 | |
| PSR J1719−1438 | Serpens[11] |
| PSR J1719−1438 b | Serpens[11] |
| PSR J1748-2021B | |
| PSR J1946+2052 | |
| PSR J2124−3358 | |
| Vela Pulsar |
Anomalous X-ray pulsars
edit- Anomalous X-ray pulsar (AXP)
- AXP 1E 1048-59
- AXP 1E2259+586
- AXP4U 0142+61
- AXP 1RXS 1708–40
- AXP 1E 1841–045
- AXP AXJ1844-0258
- AXP CXJ0110-7211
- Vela X-1
- 4U 0352+309
- Bursting Pulsar
- Vela Junior
- LMC N49
Binary star systems
editRelated objects
editSee also
editReferences
edit- ^ Heger, A.; Fryer, C. L.; Woosley, S. E.; Langer, N.; Hartmann, D. H. (2003). "How Massive Single Stars End Their Life". Astrophysical Journal. 591 (1): 288–300. arXiv:astro-ph/0212469. Bibcode:2003ApJ...591..288H. doi:10.1086/375341. S2CID 59065632.
- ^ a b "Imagine the Universe!: Neutron Stars". National Aeronautics and Space Administration - Goddard Space Flight Center. 23 September 2023. Retrieved 7 January 2024.
- ^ Glendenning, Norman K. (2012). Compact Stars: Nuclear Physics, Particle Physics and General Relativity (illustrated ed.). Springer Science & Business Media. p. 1. ISBN 978-1-4684-0491-3. Archived from the original on 2017-01-31. Retrieved 2016-03-21.
- ^ "NASA's NICER Delivers Best-ever Pulsar Measurements, 1st Surface Map". 11 December 2019.
- ^ Hester, Jeff; Scowen, Paul (30 May 1996). "The Crab Nebula From the Ground (left) and Its Interior With Pulsar". Hubblesite. Retrieved 7 January 2024.
- ^ "PSR B1509-58: A Young Pulsar Shows its Hand". Chandra X-Ray Observatory. 3 April 2009. Retrieved 7 January 2024.
- ^ "Pulsar Planets". Archived from the original on 2005-12-30.
- ^ Backer, D. C.; Kulkarni, S. R.; Heiles, C.; Davis, M. M.; et al. (1982). "A millisecond pulsar". Nature. 300 (5893): 315–318. Bibcode:1982Natur.300..615B. doi:10.1038/300615a0. S2CID 4247734.
- ^ "PSR J0952-0607 -- Pulsar". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 26 July 2022.
- ^ Wall, Mike (25 October 2012). "Super-dense neutron star is fastest ever seen". Space.com. Retrieved 25 October 2012.
- ^ a b Tillman, Nola Taylor (August 25, 2011). "Surprise! Alien Planet Made of Diamond Discovered". Space.com. Retrieved August 25, 2011.