List of neutron stars

Neutron stars are the collapsed cores of supergiant stars. They are created as a result of supernovas and gravitational collapse, and are the second-smallest and densest class of stellar objects. In the cores of these stars, protons and electrons combine to form neutrons. 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. They may include soft gamma repeaters (SGR) and radio-quiet neutron stars, as well as pulsars such as radio pulsars, recycled pulsars, low mass X-ray pulsars, and accretion-powered pulsars. A notable grouping of neutron stars includes the Magnificent Seven.

List of neutron stars

+ Designation Type Constellation Right ascension Declination Distance (pc) Mass (M☉) Radius (km) Spin period (sec) Temperature (K) Notes SGR 1806−20 Magnetar Sagittarius 18h 08m 39.32s −20° 24' 39.5" 13,000 7.55592 RCW 103 Radio-quiet Norma 16h 17m 33.000s −51° 02' 00.00" 3,100-3,300 1RXS J141256.0+792204(Calvera) Radio-quiet Ursa Minor 14h 12m 55.867s +79° 22' 03.895" ≤2,000 0.059199071070 RX J0822−4300("Cosmic Cannonball") Radio-quiet Puppis 08h 23m 8.16s −42° 41′ 41.4″ 2,000 PSR B1937+21 Pulsar Vulpecula 19h 39m 38.560210s +21° 34′ 59.14166″ >3,600 0.0015578065 RX J1856.5−3754 Corona Australis 18h 56m 35s −37° 54′ 36″ 122 1.5 12.1 The Magnificent Seven RBS1556 The Magnificent Seven RBS1223 The Magnificent Seven RX J0720.4−3125 Canis Major 07h 20m 24.961s −31° 25′ 50.21″ 360 4.50 - 5.38 The Magnificent Seven RX J0420.0-5022 The Magnificent Seven PSR B1937+21 Pulsar Vulpecula 19h 39m 38.560210s +21° 34′ 59.14166″ 3,600 0.0015578065 First-discovered millisecond pulsar PSR B1957+20(The Black Widow pulsar) Eclipsing binary pulsar Sagitta 19h 59m 36.77s +20° 48′ 15.12″ 2000 1.66 - 1.8 0.00160734 PSR B0531+21(The Crab Pulsar) Pulsar Taurus 05h 34m 31.95s +22° 00′ 52.2″ 1,900 10 0.0335028583 PSR B1509−58 Pulsar Circinus 15h 13m 55.52s −59° 08′ 08.8″ 5,200 ±1,400 9.5 0.1502 PSR B0329+54 Pulsar Camelopardalis 03h 32m 59.368s +54° 34′ 43.57″ 1,060 0.71452 PSR B0943+10 Pulsar Leo 09h 46m 7.31s +09° 51′ 57.3″ 630 ±100 1.5 1.1 3,100,000 PSR B1257+12(Lich) Pulsar Virgo 13h 00m 01s +12° 40′ 57″ 710 ±40 0.006219 Host to the first-discovered extrasolar and pulsar planets PSR B1620−26 Pulsar Scorpius 16h 23m 38.2218s −26° 31′ 53.769" 3,800 1.35 20.85 ≤ 30,000 Binary with a white dwarf PSR B1828−11 Pulsar Scutum 18h 30m 47.75s −10° 59′ 10.8″ 3,200 PSR B1919+21(LGM-1, Little Green Men) Pulsar Vulpecula 19h 21m 44.815s +21° 53′ 02.25" 100-1100 1.4 9.7 1.3373 First-discovered radio pulsar PSR J0348+0432 Pulsar Taurus 03h 48m 43.639s +04° 32′ 11.458″ 2,100 2.01 13 ±2 0.0391226569017806 Binary with a white dwarf PSR J0737−3039A Double pulsar Puppis 07h 37m 51.248s −30° 39′ 40.83″ 1150 1.338 0.022699379740922 First-known double pulsar PSR J0737−3039B Double pulsar Puppis 07h 37m 51.248s −30° 39′ 40.83″ 1150 1.249 2.7734613485 First-known double pulsar PSR J0740+6620 Pulsar Camelopardalis 07h 40m 45.799s +66° 20′ 33.60″ 1,410 2.08 12.39 Binary with a white dwarf PSR J0952–0607 Black Widow Pulsar Sextans 09h 52m 08.319s −06° 07′ 23.49″ 970, 1720, or 6260 2.35 0.00141379836 Fastest spinning pulsar known within the Milky Way PSR J1311–3430 Pulsar Centaurus 13h 11m 45.724s −34° 30′ 30.35″ 2.7 0.0025 PSR J1614−2230 Pulsar Scorpius 16h 14m 36.5051s −22° 30′ 31.081″ 1,200 1.908 13 ±2 0.0031508076534271 Binary with a white dwarf PSR J1719−1438 Pulsar Serpens 17:19:10.0730(1) −14:38:00.96(2) 1,200 1.4 19 0.0058 PSR J1748-2021B Pulsar Virgo 17h 48m 52.9522s −20h 21m 38.90s 223 2.548 PSR J1946+2052A Pulsar Vulpecula 19h 46m 14.130s +20° 52′ 24.64″ 3500 - 4200 <1.31 0.0169601753230 PSR J1946+2052A Neutron star Vulpecula 19h 46m 14.130s +20° 52′ 24.64″ 3500 - 4200 >1.18 PSR J2124−3358 Pulsar Microscopium 21h 24m 43.8464s −33° 58′ 44.961″ 270 PSR J0835-4510(The Vela Pulsar) Pulsar Vela 08h 35m 20.65525s −45° 10′ 35.1545″ 294 0.08933 3XMM J004232.1+411314 Low-mass x-ray binary pulsar Andromeda 00h 42m 32.072s +41° 13' 14.33' <3.0 3 Most luminous known x-ray source with dips in its x-ray light curves PSR J0337+1715 Pulsar Taurus 03h 37m 43.82589s +17° 15′ 14.8280″ 4200 1.436 0.0027325886324400003 Hierarchical system with two white dwarfs and one candidate pulsar planet.

Anomalous X-ray pulsars 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 Intermediate-mass X-ray binary High-mass X-ray binaries Centaurus X-3 Circinus X-1 GX 301-2 Hercules X-1

Related objects

Kesteven 79 PSR B1620−26 b 3C 58 Cas X-1 GW170817 Cygnus Loop Spaghetti Nebula SN 1987A Jellyfish Nebula

See also

Stellar designations and names

References