1E161348-5055

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Pulsar
1E 161348-5055
Image of 1E 161348-5055 in the center of RCW 103 (in blue) in the X-ray area
Image of 1E 161348-5055 in the center of RCW 103 (in blue) in the X-ray area
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Angle measure
Right ascension 16 h 17 m 36.3 s
declination -51 ° 02 ′ 27 ″
Astrometry
Physical Properties
Rotation period 6.7 h
Age 2000  a
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1E 161348-5055 is a neutron star in the midst of Supernova -Überrests RCW 103 in the constellation square . It was discovered by the High Energy Astronomy Observatory 2 X-ray telescope. Through further observations in the X-ray range during a radiation outbreak in June 2016 with the research satellites XMM-Newton , Chandra , Swift and NuSTAR , its speed of rotation could be determined with one rotation every 6.7 hours. This makes it by far the slowest rotating pulsar known . The measurements also suggest that it is a magnetar . The star is about 10,000 light years from Earth and was formed about 2000 years ago. How the rotational speed could be reduced so far within this short time (on an astronomical scale) remains unclear to the researchers. It is possible that 1E 161 348-5055 was so close to the mist of gas and dust that surrounded it that it set it in rotation and thereby quickly lost its rotational energy. Another explanation is that the neutron star still has a previously unknown star as a companion. Then, with the rotation time of 6.7 hours, the scientists would not have measured the self-rotation of the star, but the time it takes the two stars to rotate around each other.

Individual evidence

  1. ^ JA Bleeker, Johannes Geiss, M. Huber: The Century of Space Science . Springer Science & Business Media, 2012, ISBN 978-94-010-0320-9 , pp. 741 ( limited preview in Google Book search).
  2. ↑ A. D'Aì, PA Evans, DN Burrows, NPM Kuin, DA Kann, S. Campana, A. Maselli, P. Romano, G. Cusumano, V. La Parola, SD Barthelmy, AP Beardmore, SB Cenko, M De Pasquale, N. Gehrels, J. Greiner, JA Kennea, S. Klose, A. Melandri, JA Nousek, JP Osborne, DM Palmer, B. Sbarufatti, P. Schady, MH Siegel, G. Tagliaferri, R. Yates , S. Zane: Evidence for the magnetar nature of 1E161348−5055 in RCW103. In: Monthly Notices of the Royal Astronomical Society. 463, 2016, p. 2394, doi : 10.1093 / mnras / stw2023 .
  3. ↑ Mauricio Suarez, Mauro Dorato, Miklós Rédei: EPSA Epistemology and Methodology of Science Launch of the European Philosophy of Science Association . Springer Science & Business Media, 2010, ISBN 978-90-481-3263-8 , pp. 112 ( limited preview in Google Book search).
  4. ↑ Spectrum of Science, November 2016, p. 8, Extremely slow pulsar
  5. ↑ Wissenschaft.de: Slow Spinning Top in Space - Image of Science , accessed on October 28, 2016