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A Deep Search with HST for Late Time Supernova Signatures in the Hosts of XRF 011030 and XRF 020427X-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 hom 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 bust reveal no evidence for an associated supernova in either case. Supernovae such as SN 1998bw would have been visible out to z approximately 1.5 in each case, while faint supernovae such as SN 2002ap would be visible to z approximately 1. At these distances the bursts would not fit the observed correlations between E(sub p) and E(sub iso) and would have required extremely luminous X-ray afterglows. We conclude that should these XRFs reside at low redshift, it is necessary either that their line of sight is heavily extinguished, or that XRFs, unlike GRBs do not have temporally coincident supernovae.
Document ID
20040161572
Document Type
Preprint (Draft being sent to journal)
Authors
Patel, Sandeep (NASA Marshall Space Flight Center Huntsville, AL, United States)
Kouveliotou, Chryssa (NASA Marshall Space Flight Center Huntsville, AL, United States)
Levan, Andrew (Washington Univ. Seattle, WA, United States)
Fruchter, Andrew (Washington Univ. Seattle, WA, United States)
Rol, Evert (Washington Univ. Seattle, WA, United States)
Rhoads, James (Space Telescope Science Inst. Baltimore, MD, United States)
Gorosabel, Javier (Space Telescope Science Inst. Baltimore, MD, United States)
Ramirez-Ruiz, Enrico (Institute for Advanced Study Princeton, NJ, United States)
Hjorth, Jens (Copenhagen Univ. Denmark)
Wijers, Ralph (Amsterdam Univ. Netherlands)
Date Acquired
August 22, 2013
Publication Date
January 1, 2004
Subject Category
Astronomy
Funding Number(s)
CONTRACT_GRANT: NAS5-26555
Distribution Limits
Public
Copyright
Other