PSR J2222−0137 explained

PSR J2222−0137 is a nearby intermediate-mass binary pulsar at a distance of pc (approximately 870 light-years), whose low-mass neutron star's companion is a white dwarf (PSR J2222−0137 B). The white dwarf has a relatively large mass of [1] and a temperature less than 3,000 K,[2] meaning it is likely crystallized, leading to this Earth-sized white dwarf being described as a "diamond-star".[3]

Notes and References

  1. 10.1051/0004-6361/202141450. 2021A&A...654A..16G. 2107.09474. PSR J2222−0137. I. Improved physical parameters for the system. 2021. Guo. Y. J.. Freire. P. C. C.. Guillemot. L.. Kramer. M.. Zhu. W. W.. Wex. N.. McKee. J. W.. Deller. A.. Ding. H.. Kaplan. D. L.. Stappers. B.. Cognard. I.. Miao. X.. Haase. L.. Keith. M.. Ransom. S. M.. Theureau. G.. Astronomy & Astrophysics. 654. A16. 236134389.
  2. Kaplan. David L.. Boyles. Jason. Dunlap. Bart H.. Tendulkar. Shriharsh P.. Deller. Adam T.. Ransom. Scott M.. McLaughlin. Maura A.. Lorimer. Duncan R.. Stairs. Ingrid H.. A 1.05M☉Companion to PSR J2222–0137: The Coolest Known White Dwarf?. The Astrophysical Journal. 789. 2. 2014. 119. 0004-637X. 10.1088/0004-637X/789/2/119. 1406.0488v1. 2014ApJ...789..119K. 19986066.
  3. News: Astronomers Find Slow-Cooked Diamond the Size of Earth. Drake. Nadia. Nadia Drake. National Geographic. 24 June 2014.

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