Matches in SemOpenAlex for { <https://semopenalex.org/work/W2901474776> ?p ?o ?g. }
- W2901474776 endingPage "3573" @default.
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- W2901474776 abstract "We report the discovery of the transient ultraluminous X-ray source (ULX) CXOU J122602.3+125951 (hereafter M86 tULX-1), located 3′52″ (19 kpc) north-west of the centre of the giant elliptical galaxy M86 (NGC 4406) in the Virgo Cluster. The spectrum of M86 tULX-1 can be fit by a power law plus multicolour disc model with a |$1.0^{+0.8}_{-2.6}$| index and a |$0.66^{+0.17}_{-0.11}$| keV inner disc temperature, or by a power law with a 1.86 ± 0.10 index. For an isotropically emitting source at the distance of M86, the luminosity based on the superposition of spectral models is (5 ± 1) × 1039 erg s−1. Its relatively hard spectrum places M86 tULX-1 in a hitherto unpopulated region in the luminosity-disc temperature diagram, between other ULXs and the (sub-Eddington) black-hole X-ray binaries. We discovered M86 tULX-1 in an archival 148-ks 2013 July Chandra observation, and it was not detected in a 20-ks 2016 May Chandra observation, meaning it faded by a factor of at least 30 in three years. Based on our analysis of deep optical imaging of M86, it is probably not located in a globular cluster. It is the brightest ULX found in an old field environment unaffected by recent galaxy interaction. We conclude that M86 tULX-1 may be a stellar-mass black hole of ∼30–100 M⊙ with a low-mass giant companion, or a transitional object in a state between the normal stellar-mass black holes and the ultraluminous state." @default.
- W2901474776 created "2018-11-29" @default.
- W2901474776 creator A5004866113 @default.
- W2901474776 creator A5014143820 @default.
- W2901474776 creator A5023447906 @default.
- W2901474776 creator A5032859478 @default.
- W2901474776 creator A5090362572 @default.
- W2901474776 date "2018-11-28" @default.
- W2901474776 modified "2023-10-06" @default.
- W2901474776 title "Discovery of a transient ultraluminous X-ray source in the elliptical galaxy M86" @default.
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