SGR J1745-2900

Image of SGR 1745-2900 produced by the Chandra X-ray Observatory.

SGR J1745−2900 or PSR J1745-2900 is the first discovered magnetar, orbiting a black hole in the Sagittarius A* system.[1][2] The magnetar was discovered in 2013 using the Effelsberg 100-m Radio Telescope, the Nancay Decimetric Radio Telescope, and the Jodrell Bank Lovell Telescope. The magnetar has a period of 3.76 s and a magnetic field of ∼ 1014 G (1010 T).

The object offers an unparalleled tool for probing the ionized interstellar medium (ISM) toward the Galactic Center (GC),[3] and a possible way to test quantum gravity effects.[4]

References

  1. ↑ Kennea, J. A.; et al. (20 June 2013). "DISCOVERY OF A NEW SOFT GAMMA REPEATER, SGR J1745–29, NEAR SAGITTARIUS A*". The Astrophysical Journal. 770 (2): L24. arXiv:1305.2128. Bibcode:2013ApJ...770L..24K. doi:10.1088/2041-8205/770/2/L24.
  2. ↑ Mori, Kaya; et al. (20 June 2013). "DISCOVERY OF A 3.76 s TRANSIENT MAGNETAR NEAR SAGITTARIUS A*". The Astrophysical Journal. 770 (2): L23. arXiv:1305.1945. Bibcode:2013ApJ...770L..23M. doi:10.1088/2041-8205/770/2/L23.
  3. ↑ Eatough, R. P.; et al. (14 August 2013). "A strong magnetic field around the supermassive black hole at the centre of the Galaxy". Nature. 501 (7467): 391–394. arXiv:1308.3147. Bibcode:2013Natur.501..391E. doi:10.1038/nature12499. PMID 23945588.
  4. ↑ Pen, U.-L.; Broderick, A. E. (29 October 2014). "Possible astrophysical observables of quantum gravity effects near black holes". Monthly Notices of the Royal Astronomical Society. 445 (4): 3370–3373. arXiv:1312.4017. Bibcode:2014MNRAS.445.3370P. doi:10.1093/mnras/stu1919.


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