A Deep Search with HST for Late Time Supernova Signatures in the Hosts of XRF 011030 and XRF 020427

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dc.creatorLevan, Andrew
dc.creatorPatel, Sandeep
dc.creatorKouveliotou, Chryssa
dc.creatorFruchter, Andrew
dc.creatorRhoads, James
dc.creatorRol, Evert
dc.creatorRamirez-Ruiz, Enrico
dc.creatorGorosabel, Javier
dc.creatorHjorth, Jens
dc.creatorWijers, Ralph
dc.creatorWood-Vasey, W. Michael
dc.creatorBersier, David
dc.creatorCastro-Tirado, Alberto
dc.creatorFynbo, Johan
dc.creatorJensen, Brian
dc.creatorPian, Elena
dc.creatorTanvir, Nial
dc.creatorThorsett, Stephen
dc.creatorWoosely, Stan
dc.date2004-10-23
dc.date.accessioned2026-07-07T11:57:07Z
dc.date.available2026-07-07T11:57:07Z
dc.descriptionX-ray Flashes (XRFs) are, like Gamma-Ray Bursts (GRBs), thought to signal the collapse of massive stars in distant galaxies. Many models posit that the isotropic equivalent energies of XRFs are lower than those for GRBs, such that they are visible from a reduced range of distances when compared with GRBs. Here we present the results of two epoch Hubble Space Telescope imaging of two XRFs. These images taken approximately 45 and 200 days post burst reveal no evidence for an associated supernova in either case. Supernovae such as SN 1998bw would have been visible out to z ~1.5 in each case, while fainter supernovae such as SN 2002ap would have been visible to z ~ 1. If the XRFs lie at such large distances, their energies would not fit the observed correlation between the GRB peak energy and isotropic energy release, in which soft bursts are less energetic. We conclude that, should these XRFs reside at low redshifts ($z<0.6$), either their line of sight is heavily extinguished, or they are associated with extremely faint supernovae, or, unlike GRBs, these XRFs do not have temporally coincident supernovae.
dc.description12 Pages, 4 Figures, accepted for publication in ApJ
dc.identifierhttps://arxiv.org/abs/astro-ph/0410560
dc.identifierhttp://arxiv.org/abs/astro-ph/0410560
dc.identifierAstrophys.J.622:977-985,2005
dc.identifierdoi:10.1086/426938
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/205770
dc.subjectAstrophysics
dc.titleA Deep Search with HST for Late Time Supernova Signatures in the Hosts of XRF 011030 and XRF 020427
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