Astronomy:Optical pulsar
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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. | |
References
- ↑ COCKE, W. J.; DISNEY, M. J.; TAYLOR, D. J. (February 1969). "Discovery of Optical Signals from Pulsar NP 0532". Nature 221 (5180): 525–527. doi:10.1038/221525a0. Bibcode: 1969Natur.221..525C.
- ↑ NATHER, R. E.; WARNER, B.; MACFARLANE, M. (February 1969). "Optical Pulsations in the Crab Nebula Pulsar". Nature 221 (5180): 527–529. doi:10.1038/221527a0. Bibcode: 1969Natur.221..527N.
- ↑ 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
External links
- "A Pulsar Discovery: First Optical Pulsar." Moments of Discovery, American Institute of Physics, 2007 (Includes audio and teachers guides).
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