Difference between revisions of "User talk:Marina"

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== I am using this space for temporary files - modifications for wiki ==
 
== I am using this space for temporary files - modifications for wiki ==
   
In 1968 (10 November), Lovelace and his collaborators discovered period <math>P\approx 33</math> ms of the [[Crab Pulsar]].<ref name=”Lovelace1968”>[https://ui.adsabs.harvard.edu/abs/1968IAUC.2113....1L/abstract “Pulsar NP 0532 Near Crab Nebula”] R. V. E. Lovelace, J. M. Sutton, and H. D. Craft 1968, November, IAU Circ., No. 2113, #1 (1968) </ref><ref name="Lovell1973">[https://ui.adsabs.harvard.edu/abs/1973ozjb.book.....L/abstract "Out of the Zenith. Jodrell Bank 1957-1970"] Sir. Bernard Lovell, 1973, London: Oxford University Press, pp 1-255 (see page159).</ref> As a graduate student working at [[Arecibo Observatory]], Lovelace developed a version of the [[Fast Fourier transform]] program <ref name="Lovelace1969">[https://ui.adsabs.harvard.edu/abs/1969Natur.222..231L/abstract "Digital Search Methods for Pulsars"] 1969, R. V. E. Lovelace, J. M. Sutton, E. E. Salpeter, ''Nature'' 222 (5190), 231-233.</ref>
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In 1968 (10 November), Lovelace and his collaborators discovered period <math>P\approx 33</math> ms of the [[Crab Pulsar]].<ref name=”Lovelace1968”>[https://ui.adsabs.harvard.edu/abs/1968IAUC.2113....1L/abstract “Pulsar NP 0532 Near Crab Nebula”] R. V. E. Lovelace, J. M. Sutton, and H. D. Craft 1968, November, IAU Circ., No. 2113, #1 (1968) </ref><ref name="Lovell1973">[https://ui.adsabs.harvard.edu/abs/1973ozjb.book.....L/abstract "Out of the Zenith. Jodrell Bank 1957-1970"] Sir. Bernard Lovell 1973, London: Oxford University Press, pp 1-255 (see page159).</ref> As a graduate student working at [[Arecibo Observatory]], Lovelace developed a version of the [[Fast Fourier transform]] program <ref name="Lovelace1969">[https://ui.adsabs.harvard.edu/abs/1969Natur.222..231L/abstract "Digital Search Methods for Pulsars"] R. V. E. Lovelace, J. M. Sutton, E. E. Salpeter 1969, ''Nature'' 222 (5190), 231-233.</ref>
<ref name="Heideman1984">[https://www.cis.rit.edu/class/simg716/Gauss_History_FFT.pdf "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.</ref> which
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<ref name="Heideman1984">[https://www.cis.rit.edu/class/simg716/Gauss_History_FFT.pdf "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</ref> which
was adapted to run on the Arecibo Observatory's [[CDC 3000 series|CDC 3200]] computer
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was adapted to run on the Arecibo Observatory's [[CDC 3000 series|CDC 3200]] computer.
<ref name=”LovelaceTaylor2012”>[http://articles.adsabs.harvard.edu/pdf/2012Obs...132..186L "On the Discovery of the Period of the Crab Nebula Pulsar"] R.V.E. Lovelace & G. Leonard Tyler, 2012, The Observatory, V. 132, p. 186-188</ref>. This program helped to separate the periodic pulsar signal from the noise, and one night he discovered the period of the [[Crab pulsar]], which is approximately 33 ms.
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<ref name=”LovelaceTaylor2012”>[http://articles.adsabs.harvard.edu/pdf/2012Obs...132..186L "On the Discovery of the Period of the Crab Nebula Pulsar"] R.V.E. Lovelace & G. L. Tyler 2012, The Observatory, V. 132, p. 186-188</ref> This program helped to separate the periodic pulsar signal from the noise, and one night he discovered the period of the [[Crab pulsar]].
<ref name = "Comella1969">[https://ui.adsabs.harvard.edu/abs/1969Natur.221..453C/abstract "Crab nebula pulsar NP 0532"] 1969, J. M. Comella, H. D. Craft, R. V. E. Lovelace, J. M. Sutton, G. L. Tyler, ''Nature'' 221 (5179), 453-454.</ref><ref name=”Lang2013”>[https://books.google.com/books?id=Nq_1CAAAQBAJ&newbks=1&newbks_redir=0&printsec=frontcover&pg=PA1&hl=en#v=onepage&q&f=false "Astrophysical Formulae. Space, Time, Matter and Cosmology"] Kenneth R. Lang 2014, Publisher: Springer Berlin Heidelberg</ref> A few weeks earlier, observers from the [[National Radio Astronomy Observatory]] reported about two pulsating sources near the Crab Nebula, with no evident periodicities.<ref name="Howard1968">[https://ui.adsabs.harvard.edu/abs/1968IAUC.2110....2H/abstract "Pulsating radio sources near Crab Nebula"] Howard, W. E., Staelin, D. H., Reifenstein, E. C. 1968, IAU Circ., No. 2110, #2 (1968)</ref><ref name="Staelin1968">[https://ui.adsabs.harvard.edu/abs/1968Sci...162.1481S/abstract "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</ref>. 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.<ref name = "Comella1969"/><ref name=”Lang2013”/>
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<ref name = "Comella1969">[https://ui.adsabs.harvard.edu/abs/1969Natur.221..453C/abstract "Crab nebula pulsar NP 0532"] J. M. Comella, H. D. Craft, R. V. E. Lovelace, J. M. Sutton, G. L. Tyler 1969, ''Nature'' 221 (5179), 453-454</ref><ref name=”Lang2013”>[https://books.google.com/books?id=Nq_1CAAAQBAJ&newbks=1&newbks_redir=0&printsec=frontcover&pg=PA1&hl=en#v=onepage&q&f=false "Astrophysical Formulae. Space, Time, Matter and Cosmology"] Kenneth R. Lang 2014, Publisher: Springer Berlin Heidelberg</ref> A few weeks earlier, observers from the [[National Radio Astronomy Observatory]] reported about two pulsating sources near the Crab Nebula, with no evident periodicities.<ref name="Howard1968">[https://ui.adsabs.harvard.edu/abs/1968IAUC.2110....2H/abstract "Pulsating radio sources near Crab Nebula"] Howard, W. E., Staelin, D. H., Reifenstein, E. C. 1968, IAU Circ., No. 2110, #2 </ref><ref name="Staelin1968">[https://ui.adsabs.harvard.edu/abs/1968Sci...162.1481S/abstract "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</ref> 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.<ref name = "Comella1969"/><ref name=”Lang2013”/>
 
 
This was the fastest [[pulsar]] found at that time.<ref name="Lovell1973"/><ref>{{Cite book|last=Haensel, Paweł.|url=https://www.worldcat.org/oclc/232363234|title=Neutron stars. 1, Equation of state and structure|date=2007|publisher=Springer|others=Potekhin, A. Y., Yakovlev, D. G.|isbn=978-0-387-47301-7|location=New York|oclc=232363234}}</ref> This discovery helped to proof the idea that [[pulsars]] were rotating [[neutron stars]].<ref name="Gold1968">[https://ui.adsabs.harvard.edu/abs/1968Natur.218..731G/abstract ” Rotating Neutron Stars as the Origin of the Pulsating Radio Sources”] T. Gold 1968, Nature, Volume 218, Issue 5143, pp. 731-732</ref><ref name="Gold1969">[https://ui.adsabs.harvard.edu/abs/1969Natur.221...25G/abstract "Recent observations of pulsars support the rotating neutron star hypothesis."] T. Gold, 1969, Nature, Volume 221, Issue 5175, pp. 25-27.</ref> Before that, many scientists believed that pulsars were pulsating [[white dwarfs]] or [[neutron stars]].<ref name="Hewish1968">[https://ui.adsabs.harvard.edu/abs/1968Natur.217..709H/abstract “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.</ref><ref name="LovelaceTyler20122">[http://articles.adsabs.harvard.edu/pdf/2012Obs...132..186L "On the discovery of the period of the Crab Nebula pulsar"] 2012, R. V. E. Lovelace and G. L. Tyler, The Observatory 132, 186–187.</ref>
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This was the fastest [[pulsar]] found at that time.<ref name="Lovell1973"/><ref>{{Cite book|last=Haensel, Paweł.|url=https://www.worldcat.org/oclc/232363234|title=Neutron stars. 1, Equation of state and structure|date=2007|publisher=Springer|others=Potekhin, A. Y., Yakovlev, D. G.|isbn=978-0-387-47301-7|location=New York|oclc=232363234}}</ref> This discovery helped to proof the idea that [[pulsars]] were rotating [[neutron stars]].<ref name="Gold1968">[https://ui.adsabs.harvard.edu/abs/1968Natur.218..731G/abstract ” Rotating Neutron Stars as the Origin of the Pulsating Radio Sources”] T. Gold 1968, Nature, Volume 218, Issue 5143, pp. 731-732</ref><ref name="Gold1969">[https://ui.adsabs.harvard.edu/abs/1969Natur.221...25G/abstract "Recent observations of pulsars support the rotating neutron star hypothesis."] T. Gold, 1969, Nature, Volume 221, Issue 5175, pp. 25-27.</ref> Before that, many scientists believed that pulsars were pulsating [[white dwarfs]] or [[neutron stars]].<ref name="Hewish1968">[https://ui.adsabs.harvard.edu/abs/1968Natur.217..709H/abstract “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.</ref><ref name="LovelaceTyler2012">[http://articles.adsabs.harvard.edu/pdf/2012Obs...132..186L "On the discovery of the period of the Crab Nebula pulsar"] R. V. E. Lovelace and G. L. Tyler 2012, The Observatory 132, 186–187.</ref>
   
 
==References==
 
==References==

Revision as of 03:48, 28 January 2021

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I am using this space for temporary files - modifications for wiki

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] [4] which was adapted to run on the Arecibo Observatory's CDC 3200 computer. [5] This program helped to separate the periodic pulsar signal from the noise, and one night he discovered the period of the Crab pulsar. [6][7] A few weeks earlier, observers from the National Radio Astronomy Observatory reported about two pulsating sources near the Crab Nebula, with no evident periodicities.[8][9] 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.[6][7]

This was the fastest pulsar found at that time.[2][10] This discovery helped to proof the idea that pulsars were rotating neutron stars.[11][12] Before that, many scientists believed that pulsars were pulsating white dwarfs or neutron stars.[13][14]

References

  1. “Pulsar NP 0532 Near Crab Nebula” R. V. E. Lovelace, J. M. Sutton, and H. D. Craft 1968, November, IAU Circ., No. 2113, #1 (1968)
  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. "Digital Search Methods for Pulsars" R. V. E. Lovelace, J. M. Sutton, E. E. Salpeter 1969, Nature 222 (5190), 231-233.
  4. "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
  5. "On the Discovery of the Period of the Crab Nebula Pulsar" R.V.E. Lovelace & G. L. Tyler 2012, The Observatory, V. 132, p. 186-188
  6. 6.0 6.1 "Crab nebula pulsar NP 0532" J. M. Comella, H. D. Craft, R. V. E. Lovelace, J. M. Sutton, G. L. Tyler 1969, Nature 221 (5179), 453-454
  7. 7.0 7.1 "Astrophysical Formulae. Space, Time, Matter and Cosmology" Kenneth R. Lang 2014, Publisher: Springer Berlin Heidelberg
  8. "Pulsating radio sources near Crab Nebula" Howard, W. E., Staelin, D. H., Reifenstein, E. C. 1968, IAU Circ., No. 2110, #2
  9. "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
  10. Template:Cite book
  11. ” Rotating Neutron Stars as the Origin of the Pulsating Radio Sources” T. Gold 1968, Nature, Volume 218, Issue 5143, pp. 731-732
  12. "Recent observations of pulsars support the rotating neutron star hypothesis." T. Gold, 1969, Nature, Volume 221, Issue 5175, pp. 25-27.
  13. “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.
  14. "On the discovery of the period of the Crab Nebula pulsar" R. V. E. Lovelace and G. L. Tyler 2012, The Observatory 132, 186–187.