The supernova 2003lw associated with X-ray flash 031203
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The supernova 2003lw associated with X-ray flash 031203. / Thomsen, B.; Hjorth, J.; Watson, D.; Gorosabel, J.; Fynbo, J. P.U.; Jensen, B. L.; Andersen, M. I.; Dall, T. H.; Rasmussen, J. R.; Bruntt, H.; Laurikainen, E.; Augusteijn, T.; Pursimo, T.; Germany, L.; Jakobsson, P.; Pedersen, K.
In: Astronomy and Astrophysics, Vol. 419, No. 2, 01.05.2004, p. L21-L25.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - The supernova 2003lw associated with X-ray flash 031203
AU - Thomsen, B.
AU - Hjorth, J.
AU - Watson, D.
AU - Gorosabel, J.
AU - Fynbo, J. P.U.
AU - Jensen, B. L.
AU - Andersen, M. I.
AU - Dall, T. H.
AU - Rasmussen, J. R.
AU - Bruntt, H.
AU - Laurikainen, E.
AU - Augusteijn, T.
AU - Pursimo, T.
AU - Germany, L.
AU - Jakobsson, P.
AU - Pedersen, K.
PY - 2004/5/1
Y1 - 2004/5/1
N2 - The X-Ray Flash (XRF), 031203 with a host galaxy at z = 0.1055, is, apart from GRB 980425, the closest γ-Ray Burst (GRB) or XRF known to date. We have monitored its host galaxy from 1-100 days after the burst. In spite of the high extinction to the source and the bright host, a significant increase and subsequent decrease has been detected in the apparent brightness of the host, peaking between 10 and 33 days after the GRB. The only convincing explanation is a supernova (SN) associated with the XRF, SN2003lw. This is the earliest time at which a SN signal is clearly discernible in a GRB/XRF (apart from SN1998bw). SN2003lw is extremely luminous with a broad peak and can be approximately represented by the lightcurve of SN1998bw brightened by ∼0.55 mag, implying a hypernova, as observed in most GRB-SNe. The XRF-SN association firmly links XRFs with the deaths of massive stars and further strengthens their connection with GRBs. The fact that SNe are also associated with XRFs implies that Swift may detect a significant population of intermediate redshift SNe very soon after the SN explosions, a sample ideally suited for detailed studies of early SN physics.
AB - The X-Ray Flash (XRF), 031203 with a host galaxy at z = 0.1055, is, apart from GRB 980425, the closest γ-Ray Burst (GRB) or XRF known to date. We have monitored its host galaxy from 1-100 days after the burst. In spite of the high extinction to the source and the bright host, a significant increase and subsequent decrease has been detected in the apparent brightness of the host, peaking between 10 and 33 days after the GRB. The only convincing explanation is a supernova (SN) associated with the XRF, SN2003lw. This is the earliest time at which a SN signal is clearly discernible in a GRB/XRF (apart from SN1998bw). SN2003lw is extremely luminous with a broad peak and can be approximately represented by the lightcurve of SN1998bw brightened by ∼0.55 mag, implying a hypernova, as observed in most GRB-SNe. The XRF-SN association firmly links XRFs with the deaths of massive stars and further strengthens their connection with GRBs. The fact that SNe are also associated with XRFs implies that Swift may detect a significant population of intermediate redshift SNe very soon after the SN explosions, a sample ideally suited for detailed studies of early SN physics.
KW - Gamma rays: bursts
KW - Supernovae: general
UR - http://www.scopus.com/inward/record.url?scp=2542492274&partnerID=8YFLogxK
U2 - 10.1051/0004-6361:20040133
DO - 10.1051/0004-6361:20040133
M3 - Journal article
AN - SCOPUS:2542492274
VL - 419
SP - L21-L25
JO - Astronomy & Astrophysics
JF - Astronomy & Astrophysics
SN - 0004-6361
IS - 2
ER -
ID: 243911571