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dc.contributor.authorKrivonos, Roman A.
dc.contributor.authorTomsick, John A.
dc.contributor.authorBachetti, Matteo
dc.contributor.authorBoggs, Steven E.
dc.contributor.authorChakrabarty, Deepto
dc.contributor.authorChristensen, Finn E.
dc.contributor.authorCraig, William W.
dc.contributor.authorHailey, Charles J.
dc.contributor.authorHarrison, Fiona A.
dc.contributor.authorHong, Jaesub
dc.contributor.authorMori, Kaya
dc.contributor.authorStern, Daniel
dc.contributor.authorZhang, William W.
dc.contributor.authorBarriere, Nicolas M.
dc.date.accessioned2015-02-20T17:23:07Z
dc.date.available2015-02-20T17:23:07Z
dc.date.issued2015-01
dc.date.submitted2014-05
dc.identifier.issn1538-4357
dc.identifier.issn0004-637X
dc.identifier.urihttp://hdl.handle.net/1721.1/95450
dc.description.abstractWe report on two NuSTAR observations of GRS 1741.9-2853, a faint neutron star (NS) low-mass X-ray binary burster located 10' away from the Galactic center. NuSTAR detected the source serendipitously as it was emerging from quiescence: its luminosity was 6 × 10[superscript 34] erg s[superscript –1] on 2013 July 31 and 5 × 10[superscript 35] erg s[superscript –1] in a second observation on 2013 August 3. A bright, 800 s long, H-triggered mixed H/He thermonuclear Type I burst with mild photospheric radius expansion (PRE) was present during the second observation. Assuming that the luminosity during the PRE was at the Eddington level, an H mass fraction X = 0.7 in the atmosphere, and an NS mass M = 1.4 M [subscript ☉], we determine a new lower limit on the distance for this source of 6.3 ± 0.5 kpc. Combining with previous upper limits, this places GRS 1741.9-2853 at a distance of 7 kpc. Energy independent (achromatic) variability is observed during the cooling of the NS, which could result from the disturbance of the inner accretion disk by the burst. The large dynamic range of this burst reveals a long power-law decay tail. We also detect, at a 95.6% confidence level (1.7σ), a narrow absorption line at 5.46 ± 0.10 keV during the PRE phase of the burst, reminiscent of the detection by Waki et al. We propose that the line, if real, is formed in the wind above the photosphere of the NS by a resonant Kα transition from H-like Cr gravitationally redshifted by a factor 1 + z = 1.09, corresponding to a radius range of 29.0-41.4 km for a mass range of 1.4-2.0 M [subscript ☉].en_US
dc.description.sponsorshipUnited States. National Aeronautics and Space Administration (Contract NNG08FD60C)en_US
dc.language.isoen_US
dc.publisherIOP Publishingen_US
dc.relation.isversionofhttp://dx.doi.org/10.1088/0004-637X/799/2/123en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceAmerican Astronomical Societyen_US
dc.titleNuSTAR OBSERVATION OF A TYPE I X-RAY BURST FROM GRS 1741.9-2853en_US
dc.typeArticleen_US
dc.identifier.citationBarriere, Nicolas M., Roman Krivonos, John A. Tomsick, Matteo Bachetti, Steven E. Boggs, Deepto Chakrabarty, Finn E. Christensen, et al. “NuSTAR OBSERVATION OF A TYPE I X-RAY BURST FROM GRS 1741.9-2853.” The Astrophysical Journal 799, no. 2 (January 21, 2015): 123. © 2015 The American Astronomical Societyen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.contributor.departmentMIT Kavli Institute for Astrophysics and Space Researchen_US
dc.contributor.mitauthorChakrabarty, Deeptoen_US
dc.relation.journalThe Astrophysical Journalen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsBarriere, Nicolas M.; Krivonos, Roman; Tomsick, John A.; Bachetti, Matteo; Boggs, Steven E.; Chakrabarty, Deepto; Christensen, Finn E.; Craig, William W.; Hailey, Charles J.; Harrison, Fiona A.; Hong, Jaesub; Mori, Kaya; Stern, Daniel; Zhang, William W.en_US
dc.identifier.orcidhttps://orcid.org/0000-0001-8804-8946
mit.licensePUBLISHER_POLICYen_US
mit.metadata.statusComplete


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