The Luminosity Phase Space of Galactic and Extragalactic X-ray Transients Out to Intermediate Redshifts

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dc.contributor.authorPolzin, Ava
dc.contributor.authorMargutti, Raffaella
dc.contributor.authorCoppejans, Deanne
dc.contributor.authorAuchettl, Katie
dc.contributor.authorPage, Kim L.
dc.contributor.authorVasilopoulos, Georgios
dc.contributor.authorBright, Joe S.
dc.contributor.authorEsposito, Paolo
dc.contributor.authorWilliams, Peter K. G.
dc.contributor.authorMukai, Koji
dc.contributor.authorBerger, Edo
dc.date.accessioned2022-11-28T16:36:31Z
dc.date.available2022-11-28T16:36:31Z
dc.date.issued2022-10-02
dc.description.abstractWe present a detailed compilation and analysis of the X-ray phase space of low- to intermediateredshift transients that consolidates observed light curves (and theory where necessary) for a large variety of classes of transient/variable phenomena in the 0.3–10 keV band including gamma-ray burst afterglows, supernovae, supernova shocks interacting with the environment, tidal disruption events and active galactic nuclei, fast blue optical transients, cataclysmic variables, magnetar flares/outbursts and fast radio bursts, cool stellar flares, X-ray binary outbursts, and ultraluminous X-ray sources. Our over-arching goal is to offer a comprehensive resource for the examination of these ephemeral events, extending the X-ray duration-luminosity phase space (DLPS) to show luminosity evolution. We use existing observations (both targeted and serendipitous) to characterize the behavior of various transient/variable populations. Contextualizing transient signals in the larger DLPS serves two primary purposes: to identify areas of interest (i.e., regions in the parameter space where one would expect detections, but in which observations have historically been lacking) and to provide initial qualitative guidance in classifying newly discovered transient signals. We find that while the most luminous (largely extragalactic) and least luminous (largely Galactic) part of the phase space is well-populated at t > 0.1 days, intermediate luminosity phenomena (Lx = 1034 − 1042 erg s−1 ) represent a gap in the phase space. We thus identify Lx = 1034 − 1042 erg s−1 and t = 10−4 − 0.1 days as a key discovery phase space in transient X-ray astronomy.en_US
dc.description.sponsorshipThe authors thank Laura Chomiuk, Irina Zhuravleva, and Margaretha Pretorius for helpful discussions. K.L.P. acknowledges support from the UK Space Agency. This work made use of data supplied by the UK Swift Science Data Centre at the University of Leicester. R.M. acknowledge partial support by the National Science Foundation under Grant No. AST-2221789 and AST-2224255, by the Heising-Simons Foundation under grant # 2021-3248. This research has made use of MAXI data provided by RIKEN, JAXA and the MAXI team.en_US
dc.description.urihttps://arxiv.org/abs/2211.01232en_US
dc.format.extent33 pagesen_US
dc.genrejournal articlesen_US
dc.genrepreprintsen_US
dc.identifierdoi:10.13016/m29siy-o3jc
dc.identifier.urihttps://doi.org/10.48550/arXiv.2211.01232
dc.identifier.urihttp://hdl.handle.net/11603/26367
dc.language.isoen_USen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Center for Space Sciences and Technology
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)*
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/*
dc.titleThe Luminosity Phase Space of Galactic and Extragalactic X-ray Transients Out to Intermediate Redshiftsen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0002-8286-8094en_US

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