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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.
Six known optical pulsars are listed by Shearer and Golden (2002):[3]
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
*Source included but not discussed in paper by source paper.
^COCKE, W. J.; DISNEY, M. J.; TAYLOR, 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.
^Proceedings of the 270. WE-Heraeus Seminar on Neutron Stars, Pulsars, and Supernova Remnants. MPE Report 278.; "Why study pulsars optically?"; Shearer, A. & Golden, A.; 2002; Bibcode:2002nsps.conf...44S, arxiv
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