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An Optically Discov...
An Optically Discovered Outburst from XTE J1859+226
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Bellm, Eric C. (author)
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Wang, Yuankun (author)
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van Roestel, Jan (author)
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Phillipson, Rebecca A. (author)
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Coughlin, Michael W. (author)
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Tomsick, John A. (author)
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Groom, Steven L. (author)
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Healy, Brian (author)
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Purdum, Josiah (author)
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Rusholme, Ben (author)
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- Sollerman, Jesper, 1968- (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Bealo, Peter (author)
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Lora, Stefano (author)
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Muyllaert, Eddy (author)
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Peretto, Ivo (author)
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Schwendeman, Erik J. (author)
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(creator_code:org_t)
- 2023
- 2023
- English.
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In: Astrophysical Journal. - 0004-637X .- 1538-4357. ; 956:1
- Related links:
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https://doi.org/10.3...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
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- Using the Zwicky Transient Facility, in 2021 February we identified the first known outburst of the black hole X-ray transient XTE J1859+226 since its discovery in 1999. The outburst was visible at X-ray, UV, and optical wavelengths for less than 20 days, substantially shorter than its full outburst of 320 days in 1999, and the observed peak luminosity was 2 orders of magnitude lower. Its peak bolometric luminosity was only 2 × 1035 erg s−1, implying an Eddington fraction of about 3 × 10−4. The source remained in the hard spectral state throughout the outburst. From optical spectroscopy measurements we estimate an outer disk radius of 1011 cm. The low observed X-ray luminosity is not sufficient to irradiate the entire disk, but we observe a surprising exponential decline in the X-ray light curve. These observations highlight the potential of optical and infrared synoptic surveys to discover low-luminosity activity from X-ray transients.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Bellm, Eric C.
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Wang, Yuankun
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van Roestel, Jan
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Phillipson, Rebe ...
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Coughlin, Michae ...
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Tomsick, John A.
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show more...
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Groom, Steven L.
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Healy, Brian
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Purdum, Josiah
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Rusholme, Ben
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Sollerman, Jespe ...
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Bealo, Peter
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Lora, Stefano
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Muyllaert, Eddy
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Peretto, Ivo
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Schwendeman, Eri ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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Astrophysical Jo ...
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Stockholm University