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An optical pulsar is a pulsar which can be detected in the visible spectrum. There are very few of these known: the Crab Pulsar was detected by stroboscopic techniques in 1969,^[1]^[2] shortly after its discovery in radio waves, at the Steward Observatory. The Vela Pulsar was detected in 1977 at the Anglo-Australian Observatory, and was the faintest star ever imaged at that time.

As of 2018,^[update] there are 13 recognized optical pulsars:^[3]^[4]^[5]

Name of pulsar	Magnitude (B)
Crab Pulsar (CM Tauri, PSR B0531+21)	16.5
Vela Pulsar	24
PSR B0540-69 (in the Large Magellanic Cloud)	23
PSR B0656+14	26
PSR B0633+17 (Geminga)	25.5
PSR B1509-58 (*)	25.7
PSR J1023+0038	22
PSR B1055−52	24.9
PSR B1929+10	25.6
PSR B1133+16	28
PSR B0950+08	27.1
PSR J0108−1431	26.4
PSR J0437−4715	20.98±0.09
*Source included but not discussed in paper by source paper.

References

^ Cocke, W. J.; Disney, M. J.; TaylorR, D. J. (February 1969). "Discovery of Optical Signals from Pulsar NP 0532". Nature. 221 (5180): 525–527. Bibcode:1969Natur.221..525C. doi:10.1038/221525a0. S2CID 4296580.
^ Nather, R. E.; Warner, B.; MacFarlane, M. (February 1969). "Optical Pulsations in the Crab Nebula Pulsar". Nature. 221 (5180): 527–529. Bibcode:1969Natur.221..527N. doi:10.1038/221527a0. S2CID 4295264.
^ Shearer, A.; Golden, A. (2022). "Why study pulsars optically?". Proceedings of the 270. WE-Heraeus Seminar on Neutron Stars, Pulsars, and Supernova Remnants. MPE Report 278. Bibcode:2002nsps.conf...44S, arxiv
^ Shearer, Andrew; Connor, Eoin O’ (June 2018). "Optical pulsars and polarimetry". Proceedings of the International Astronomical Union. 13 (S337): 191–194. doi:10.1017/S174392131700998X. ISSN 1743-9213 – via Astrophysics Data Service.
^ Bell, J. F.; Bailes, M.; Bessell, M. S. (August 1993). "Optical detection of the companion of the millisecond pulsar J0437-4715". Nature. 364 (6438): 603–605. doi:10.1038/364603a0. ISSN 0028-0836.

External links

"A Pulsar Discovery: First Optical Pulsar." Moments of Discovery, American Institute of Physics, 2007 (Includes audio and teachers guides).

v t e Neutron star
Types	Radio-quiet Pulsar
Single pulsars	Magnetar Soft gamma repeater Anomalous X-ray Ultra-long period Rotating radio transient
Binary pulsars	Binary X-ray pulsar X-ray binary X-ray burster List Millisecond Be/X-ray Spin-up Hulse–Taylor pulsar
Properties	Blitzar Fast radio burst Bondi accretion Chandrasekhar limit Gamma-ray burst Glitch Neutron matter Neutron-star oscillation Optical Pulsar kick Quasi-periodic oscillation Relativistic Rp-process Starquake Timing noise Tolman–Oppenheimer–Volkoff limit Urca process
Related	Gamma-ray burst progenitors Asteroseismology Compact star Quark star Exotic star Supernova Supernova remnant Related links Hypernova Kilonova Microquasar Neutron star merger Quark-nova White dwarf Related links Stellar black hole Related links Radio star Pulsar planet Pulsar wind nebula Thorne–Żytkow object QCD matter
Discovery	LGM-1 Centaurus X-3 Timeline of white dwarfs, neutron stars, and supernovae
Satellite investigation	Rossi X-ray Timing Explorer Fermi Gamma-ray Space Telescope Compton Gamma Ray Observatory Chandra X-ray Observatory
Other	X-ray pulsar-based navigation The Magnificent Seven List of neutron stars Most massive neutron stars Neutron stars in fiction
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