Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/7376
Title: A 78 Day X-ray Period Detected from NGC 5907 ULX1 by Swift
Authors: Walton, D. J.
Fuerst, F.
Rana, V
+12 Co-Authors
Keywords: black hole physics
X-rays: binaries
X-rays: individual: NGC 5907 ULX1
Issue Date: 10-Aug-2016
Publisher: IOP Sciences for American Astronomical Society
Citation: The Astrophysical Journal Letters, 2016, Vol.827, p6
Abstract: We report the detection of a 78.1 ± 0.5 day period in the X-ray light curve of the extreme ultraluminous X-ray source NGC 5907 ULX1 ({L}{{X,peak}}̃ 5× {10}40 erg s-1), discovered during an extensive monitoring program with Swift. These periodic variations are strong, with the observed flux changing by a factor of ̃3-4 between the peaks and the troughs of the cycle; our simulations suggest that the observed periodicity is detected comfortably in excess of 3σ significance. We discuss possible origins for this X-ray period, but conclude that at the current time we cannot robustly distinguish between orbital and super-orbital variations.
Description: Open Access.
URI: http://hdl.handle.net/2289/7376
ISSN: 0004-637X
1538-4357 (online)
Alternative Location: https://ui.adsabs.harvard.edu/abs/2016ApJ...827L..13W/abstract
https://arxiv.org/abs/1607.07448
http://dx.doi.org/10.3847/2041-8205/827/1/L13
Copyright: 2016 The American Astronomical Society.
Appears in Collections:Research Papers (A&A)

Files in This Item:
File Description SizeFormat 
2016_APJ Letters_Vol.827_pL13.pdfOpen Access426.16 kBAdobe PDFView/Open


Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.