User talk:Marina

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Add four "tilde"s at the end; they become your signature. T (talk) 14:08, 21 December 2020 (JST) T (talk) 14:08, 21 December 2020 (JST)

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In 1968 (10 November), Lovelace and his collaborators discovered period \(P\approx 33\) ms of the Crab Pulsar.[1][2] As a graduate student working at Arecibo Observatory, Lovelace developed a version of the Fast Fourier transform program [3] which was adapted to run on the Arecibo Observatory's CDC 3200 computer. [4] This program helped to separate the periodic pulsar signal from the noise, and one night he discovered the period of the Crab pulsar. [4] [5] A few weeks earlier, observers from the National Radio Astronomy Observatory reported about two pulsating sources near the Crab Nebula, with no evident periodicities.[6][7] Lovelace and collaborators found that one of pulsars (the NP 0532) is located in the center of the Crab Nebula (with precision of 10') and found it's period with a high precision: 33.09 ms.[4][5]

This was the fastest pulsar found at that time.[2][8] This discovery helped to proof the idea that pulsars were rotating neutron stars.[9][10] Before that, many scientists believed that pulsars were pulsating white dwarfs or neutron stars.[11][10]

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and in 2010 became an editorial board member of Journal of Computational Astrophysics and Cosmology.Template:Citation needed

and in 2010 became an editorial board member of ["Journal of Computational Astrophysics and Cosmology".<ref name=CompAstroph>[1]


References

  1. “Expertise Finder” Toronto (Canada)
  2. 2.0 2.1 "Out of the Zenith. Jodrell Bank 1957-1970" Sir. Bernard Lovell 1973, London: Oxford University Press, pp 1-255 (see page159).
  3. "Gauss and the history of the fast Fourier transform" Heideman, Michael T., Johnson, Don H., Burrus, Charles Sidney 1984. (PDF). IEEE ASSP Magazine. 1 (4): 14–21. CiteSeerX 10.1.1.309.181. doi:10.1109/MASSP.1984.1162257. S2CID 10032502
  4. 4.0 4.1 4.2 "On the Discovery of the Period of the Crab Nebula Pulsar" Cornell University
  5. 5.0 5.1 "Astrophysical Formulae. Space, Time, Matter and Cosmology" Kenneth R. Lang 2014, Publisher: Springer Berlin Heidelberg
  6. "Pulsating radio sources near Crab Nebula" Howard, W. E., Staelin, D. H., Reifenstein, E. C. 1968, IAU Circ., No. 2110, #2
  7. "Pulsating Radio Sources near the Crab Nebula" Staelin, David H. and Reifenstein, Edward C., III, December 1968, Science, Volume 162, Issue 3861, pp. 1481-1483
  8. Template:Cite book
  9. ” Rotating Neutron Stars as the Origin of the Pulsating Radio Sources” T. Gold 1968, Nature, Volume 218, Issue 5143, pp. 731-732
  10. 10.0 10.1 "Recent observations of pulsars support the rotating neutron star hypothesis." T. Gold, 1969, Nature, Volume 221, Issue 5175, pp. 25-27.
  11. “Observations of a Rapidly Pulsating Radio Source” A. Hewish, S. J. Bell, J. D. H. Pilkington, P. F. Scott and R. A. Collins 1968, Nature, 217, 709-713.