{ "id": "1702.03601", "version": "v1", "published": "2017-02-13T00:48:11.000Z", "updated": "2017-02-13T00:48:11.000Z", "title": "Observations of V0332+53 during the 2015 Outburst using Fermi/GBM, MAXI, Swift, and INTEGRAL", "authors": [ "Zachary A. Baum", "Michael L. Cherry", "James Rodi" ], "comment": "8 pages, 4 figures. To be published, MNRAS", "categories": [ "astro-ph.HE" ], "abstract": "We present the lightcurves, spectra, and hardness-intensity diagram (HID) of the high mass X-ray binary V0332+53 using Fermi/GBM, MAXI, Swift/BAT, and INTEGRAL through its 2015 Type II outburst. We observe characteristic features in the X-ray emission (2-50 keV) due to periastron passages, the dynamical timescale of the accretion disc, and changes within the accretion column between a radiation-dominated flow and a flow dominated by Coulomb interactions. Based on the HID and the light curves, the critical luminosity is observed to decrease by ~5-7 percent during the outburst, signaling a decrease in the magnetic field.", "revisions": [ { "version": "v1", "updated": "2017-02-13T00:48:11.000Z" } ], "analyses": { "keywords": [ "observations", "high mass x-ray binary", "hardness-intensity diagram", "characteristic features", "x-ray emission" ], "note": { "typesetting": "TeX", "pages": 8, "language": "en", "license": "arXiv", "status": "editable" } } }