PSR B1919+21

PSR B1919+21

Starbox begin
name=PSR B1919+21 Starbox observe
epoch=J2000.0 (ICRS)
constell=Vulpecula
ra=RA|19|21|44.79808 [http://adsabs.harvard.edu/abs/2003AcA....53..133U The Optical Gravitational Lensing Experiment. Additional Planetary and Low-Luminosity Object Transits from the OGLE 2001 and 2002 Observational Campaigns] , A. Udalski, G. Pietrzynski, M. Szymanski, M. Kubiak, K. Zebrun, I. Soszynski, O. Szewczyk, and L. Wyrzykowski, "Acta Astronomica" 53 (June 2003), pp. 133–149.]
dec=DEC|+21|53|01.8288
-! style="background-color: #FFFFC0;" colspan="2" | Astrometry
- style="vertical-align: top;"
Spectral type
Pulsar
- style="vertical-align: top;"
Apparent magnitude (V)

- style="vertical-align: top;"
Distance
2283.12 Ly
-! style="background-color: #FFFFC0;" colspan="2" | Binary orbit
- style="vertical-align: top;"
Period (P)
1.3373 [http://adsabs.harvard.edu/abs/2005A&A...433L..21P A planet-sized transiting star around OGLE-TR-122. Accurate mass and radius near the hydrogen-burning limit] , F. Pont, C. H. F. Melo, F. Bouchy, S. Udry, D. Queloz, M. Mayor, and N. C. Santos, "Astronomy and Astrophysics" 433, #2 (April 11, 2005), pp. L21–L24.] s Starbox detail
mass=?
radius=?
luminosity=?
temperature=?
metal=?
rotation=1.337
age=7.20 Starbox catalog
names= PSR J1921+2153, PULS CP 1919+21, WSTB 12W15, PSR B1919+21, PULS CP 1919.

PSR B1919+21 is a pulsar with a period of 1.337 seconds and a pulse width of 0.04 second. It is notable for being the first radio pulsar ever discovered (in July 1967 by Jocelyn Bell Burnell). Its original designation was CP 1919 and it is also known as PSR J1921+2153. It is located in the constellation of Vulpecula.

Discovery

Before the nature of the signal was determined, the researchers, Bell and her Ph.D supervisor Anthony Hewish, somewhat seriously considered the possibility of extraterrestrial life:

We did not really believe that we had picked up signals from another civilization, but obviously the idea had crossed our minds and we had no proof that it was an entirely natural radio emission. It is an interesting problem - if one thinks one may have detected life elsewhere in the universe how does one announce the results responsibly? Who does one tell first? [cite web
url = http://www.bigear.org/vol1no1/burnell.htm
title = Little Green Men, White Dwarfs or Pulsars?
author = S. Jocelyn Bell Burnell
authorlink = Jocelyn Bell Burnell
date = 1977
publisher = Cosmic Search Magazine
accessdate = 2008-01-30 (after-dinner speech with the title of "Petit Four" given at the Eighth Texas Symposium on Relativistic Astrophysics; first published in "Annals of the New York Academy of Science", vol. 302, pages 685-689, Dec., 1977)]
The observation was given the half-humorous designation "Little green men 1", until researchers Thomas Gold and Fred Hoyle correctly identified these signals as rapidly rotating neutron stars with strong magnetic fields.

When Hewish and Martin Ryle received the Nobel Prize in physics in 1974 for their work in radio-astronomy and pulsars, it was argued by Hoyle that Burnell should have been a co-recipient of the prize.

The British post-punk band Joy Division used an image of CP 1919's radio pulses on the cover of their debut album, "Unknown Pleasures". [cite web
url = http://www.joydiv.org/up.htm
title = Unknown Pleasures
date = June 1979
publisher = Joy Division
accessdate = 2008-07-05]

Notes

References

*cite journal
last = Hewish
first = Antony
authorlink = Antony Hewish
coauthors = S J Bell, J D H Pilkington, P F Scott, R A Collins
title = Observation of a Rapidly Pulsating Radio Source
journal = Nature
volume = 217
issue =
pages = 709–713
date = 24 Feb 1968
url = http://www.nature.com/nature/journal/v217/n5130/pdf/217709a0.pdf
doi =
id =
accessdate = 2007-07-06

* [http://www.k3pgp.org/pulsar.htm http://www.k3pgp.org/]
* [http://www.astro.cornell.edu/~shami/psrvlb/vla-x/xtab3.html http://www.astro.cornell.edu/]

ee also

*LGM-1

External links

* [http://www.jb.man.ac.uk/~pulsar/Education/Tutorial/tut/node3.html The discovery]
* http://www.edwardsly.com/bellburs.htm
* [http://query.nytimes.com/gst/fullpage.html?sec=health&res=9C02E4DE123EF933A15753C1A9659C8B63 Article about Nobel Prize Controversies]
* [http://w0.sao.ru/hq/grb/pulsars/PSR/B1919+21/catalog.txt http://w0.sao.ru/]
* [http://www.astro.cornell.edu/~shami/psrvlb/bestvla.txt http://www.astro.cornell.edu/]


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • PSR B1919+21 — Звезда История исследования Открыватель Джоселин Белл Бернелл Дата открытия июль, 1967 Наблюдательные данные (Эпоха J2000.0) Тип …   Википедия

  • PSR B1919+21 — PSR B1919+21, également nommé CP 1919 et PSR J1921+2153 (voir Désignation des pulsars) est le premier pulsar découvert (si l on excepte PSR B0329+54 dont le signal avait été capté auparavant sans attirer l attention). Il est situé dans la… …   Wikipédia en Français

  • PSR B1919+21 — ist der erste entdeckte Pulsar. Er hat eine Umlaufzeit von 1,337 s. Er befindet sich im Sternbild Vulpecula (Füchschen) bei Rektaszension 19h19m16s und Deklination +21°47 , und ist etwa 2000 Lichtjahre vom Sonnensystem entfernt.… …   Deutsch Wikipedia

  • PSR 1919+21 — PSR B1919+21 PSR B1919+21, également nommé CP 1919 et PSR J1921+2153 (voir Désignation des pulsars) est le premier pulsar découvert (si l on excepte PSR B0329+54 dont le signal avait été capté auparavant sans attirer l attention). Il est situé… …   Wikipédia en Français

  • PSR J1921+2153 — PSR B1919+21 PSR B1919+21, également nommé CP 1919 et PSR J1921+2153 (voir Désignation des pulsars) est le premier pulsar découvert (si l on excepte PSR B0329+54 dont le signal avait été capté auparavant sans attirer l attention). Il est situé… …   Wikipédia en Français

  • PSR J1939+2134 — PSR B1937+21 PSR B1937+21, ou PSR J1939+2134, est un pulsar milliseconde, le premier pulsar de cette classe jamais découvert, en 1982. Il est situé dans la constellation du Petit Renard, tout comme PSR B1919+21, le premier pulsar découvert. PSR… …   Wikipédia en Français

  • PSR B0531+21 — Звезда Крабовидная туманнос …   Википедия

  • PSR B1937+21 — Données d observation (Époque ) Ascension droite 19h 39m 38.560210s Déclinaison +21° 34′ 59.14166″ Constellation Petit Renard Magnitude apparente  ? …   Wikipédia en Français

  • CP 1919 — PSR B1919+21 PSR B1919+21, également nommé CP 1919 et PSR J1921+2153 (voir Désignation des pulsars) est le premier pulsar découvert (si l on excepte PSR B0329+54 dont le signal avait été capté auparavant sans attirer l attention). Il est situé… …   Wikipédia en Français

  • CP 1919+21 — PSR B1919+21 PSR B1919+21, également nommé CP 1919 et PSR J1921+2153 (voir Désignation des pulsars) est le premier pulsar découvert (si l on excepte PSR B0329+54 dont le signal avait été capté auparavant sans attirer l attention). Il est situé… …   Wikipédia en Français

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”