A Comprehensive Investigation of Gamma-Ray Burst Afterglows Detected by TESS

dc.contributor.authorRoxburgh, Hugh
dc.contributor.authorRidden-Harper, Ryan
dc.contributor.authorLane, Zachary G.
dc.contributor.authorRest, Armin
dc.contributor.authorHubley, Lancia
dc.contributor.authorHounsell, Rebekah
dc.contributor.authorWang, Qinan
dc.contributor.authorGomez, Sebastian
dc.contributor.authorGuolo, Muryel
dc.contributor.authorRest, Sofia
dc.contributor.authorCoelln, Sophie von
dc.description.abstractGamma-ray bursts produce afterglows that can be observed across the electromagnetic spectrum and can provide insight into the nature of their progenitors. While most telescopes that observe afterglows are designed to rapidly react to trigger information, the Transiting Exoplanet Survey Satellite (TESS) continuously monitors sections of the sky at cadences between 30 minutes and 200 seconds. This provides TESS with the capability of serendipitously observing the optical afterglow of GRBs. We conduct the first extensive search for afterglows of known GRBs in archival TESS data reduced with the TESSreduce package, and detect 11 candidate signals that are temporally coincident with reported burst times. We classify 3 of these as high-likelihood GRB afterglows previously unknown to have been detected by TESS, one of which has no other afterglow detection reported on the Gamma-ray Coordinates Network. We classify 5 candidates as tentative and the remainder as unlikely. Using the afterglowpy package, we model each of the candidate light curves with a Gaussian and a top hat model to estimate burst parameters; we find that a mean time delay of 740 ± 690 s between the explosion and afterglow onset is required to perform these fits. The high cadence and large field of view make TESS a powerful instrument for localising GRBs, with the potential to observe afterglows in cases when no other backup photometry is possible.en_US
dc.description.sponsorshipThis work was supported by NASA TESS GI 80NSSC21K0242 (cycle 3). RRH was supported by the Marsden Fund Council from Government funding, managed by Royal Society Te Aparangi under the Fast Start Grant MFP-UOC2204. This paper includes data collected by the TESS mission. Funding for the TESS mission is provided by the NASA’s Science Mission Directorate. TESS data in this paper were obtained from the Mikulski Archive for Space Telescopes (MAST) at the Space Telescope Science Institute. This material is based upon work supported by NASA under award number 80GSFC21M0002. The authors would like to acknowledge B. Gompertz and C. Kilpatrick for useful discussions. Q.W. is supported in part by NASA grants 80NSSC22K0494, 80NSSC21K0242 and 80NSSC19K0112. Q.W. is also partially supported by STScI DDRF fund.en_US
dc.format.extent18 pagesen_US
dc.genrejournal articlesen_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.titleA Comprehensive Investigation of Gamma-Ray Burst Afterglows Detected by TESSen_US


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