An Analysis of the Optical and Near-Infrared Variability of Super Fast X-Ray Transient IC 10 X-2

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Abstract

High Mass X-ray Binaries are a type of binary system involving a massive star, above 10M⊙, and a compact object, either a neutron star or a black hole, in which material from the massive star accretes onto the compact object. IC 10 X-2 is a known HMXB and has been identified as a Supergiant Fast X-ray Transient (SFXT), a subclass of HMXBs known to produce fast, bright X-ray flares. Two large flares of IC 10 X-2 were observed by ZTF in 2018 that are of a comparable magnitude to a flare observed in October 2013. An analysis of the flare events is presented and constraints on the behavior of the system are proposed through an analysis of the light-curves in both g- and R-band from ZTF, as well as g', r', and i' data from LCO in 2019. By analyzing the optical and near-infrared light curve of IC 10 X-2, as measured by both ZTF and our recent LCO monitoring campaign, we will evaluate different models for the origins of its flares and the consequences for the nature of its stellar companion and accretion onto its compact companion.
Original languageEnglish (US)
JournalAmerican Astronomical Society meeting #235
Volume235
StatePublished - Jan 1 2020

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