SRGA J124404.1-632232/SRGU J124403.8-632231: New X-ray pulsar discovered in the all-sky survey by the SRG
Doroshenko V, Staubert R, Maitra C, Rau A, Haberl F, Santangelo A, Schwope A, Wilms J, Buckley DAH, Semena A, Mereminskiy I, Lutovinov A, Gromadzki M, Townsend LJ, Monageng IM (2022)
Publication Type: Journal article
Publication year: 2022
Journal
Book Volume: 661
DOI: 10.1051/0004-6361/202141147
Abstract
Ongoing all-sky surveys by the eROSITA and the Mikhail Pavlinsky ART-XC telescopes on board the Spectrum-RoentgenGamma (SRG) mission have already revealed over a million of X-ray sources. One of them, SRGA J124404.1-632232/ SRGU J124403.8-632231, was detected as a new source in the third (of the planned eight) consecutive X-ray surveys by ART-XC. Based on the properties of the identified optical counterpart, it was classified as a candidate X-ray binary. We report on the follow-up observations of this source with the Nuclear Spectroscopic Telescope Array, the Neil Gehrels Swift Observatory, and the Southern African Large Telescope, which allowed us to unambiguously confirm the initial identification and establish SRGU J124403.8-632231 as a new X-ray pulsar with a spin period of -538 s and a Be-star companion, making it one of the first Galactic X-ray pulsars discovered by the SRG.
Authors with CRIS profile
Involved external institutions
Eberhard Karls Universität Tübingen
Germany (DE)
Leibniz Institute for Astrophysics Potsdam / Leibniz-Institut für Astrophysik Potsdam
Germany (DE)
Max-Planck-Institut für extraterrestrische Physik (MPE) / Max Planck Institute for Extraterrestrial Physics
Germany (DE)
South African Astronomical Observatory (SAAO)
South Africa (ZA)
Russian Academy of Sciences / Росси́йская акаде́мия нау́к (RAS)
Russian Federation (RU)
University of Warsaw / Uniwersytet Warszawski
Poland (PL)
Germany (DE)
Leibniz Institute for Astrophysics Potsdam / Leibniz-Institut für Astrophysik Potsdam
Germany (DE)
Max-Planck-Institut für extraterrestrische Physik (MPE) / Max Planck Institute for Extraterrestrial Physics
Germany (DE)
South African Astronomical Observatory (SAAO)
South Africa (ZA)
Russian Academy of Sciences / Росси́йская акаде́мия нау́к (RAS)
Russian Federation (RU)
University of Warsaw / Uniwersytet Warszawski
Poland (PL)
How to cite
APA:
Doroshenko, V., Staubert, R., Maitra, C., Rau, A., Haberl, F., Santangelo, A.,... Monageng, I.M. (2022). SRGA J124404.1-632232/SRGU J124403.8-632231: New X-ray pulsar discovered in the all-sky survey by the SRG. Astronomy & Astrophysics, 661. https://dx.doi.org/10.1051/0004-6361/202141147
MLA:
Doroshenko, V., et al. "SRGA J124404.1-632232/SRGU J124403.8-632231: New X-ray pulsar discovered in the all-sky survey by the SRG." Astronomy & Astrophysics 661 (2022).
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