2001/04/30 by Jun Yokogawa, Ken’ichi Torii, Ken'ichi Torii +2
Physics and Astronomy · #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Astrophysics and Cosmic Phenomena #Large Magellanic Cloud #Physics #Pulsar #Pulsars and Gravitational Waves Research #Small Magellanic Cloud #Stars #astro-ph
paper · pdf · doi:10.1093/pasj/53.3.l9
4 pages, 3 figures, to be published in PASJ. Also available at http://www-cr.scphys.kyoto-u.ac.jp/member/jun/job/
arxiv created 2001/05/23 · openalex publication_date 2001/06/25 · arxiv updated 2015/06/24 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Abstract We report on the detection of 167.8 ± 0.2 s pulsations from AX J0052.9-7157 in the Small Magellanic Cloud with ASCA. The pulsations show an energy-independent sinusoidal profile. The X-ray spectrum has been described by an absorbed hard power-law (photon index ∼ 0.7) with a luminosity of ∼ 8.8 × 1035 erg s-1 at a distance of 60 kpc. The position is determined to be (R.A.,~Dec.)J2000 = (00h52\rm m59\rlap.\rm s2, -7171∘57′58′′), with an error radius of ∼ 30′′. We have found that a variable Be/X-ray binary RX J0052.9-7158 is located within the 30′′ error circle, and is also located at the edge of the 10′ error circle of the 169-s pulsar XTE J0054-720. We therefore conclude that these are the same source, a Be/X-ray binary pulsar.