TY - JOUR
T1 - Spectroscopic evidence for SN 2010ma associated with GRB 101219B
AU - Sparre, M.
AU - Sollerman, J.
AU - Fynbo, J. P.U.
AU - Malesani, D.
AU - Goldoni, P.
AU - De Ugarte Postigo, A.
AU - Covino, S.
AU - D'Elia, V.
AU - Flores, H.
AU - Hammer, F.
AU - Hjorth, J.
AU - Jakobsson, P.
AU - Kaper, L.
AU - Leloudas, G.
AU - Levan, A. J.
AU - Milvang-Jensen, B.
AU - Schulze, S.
AU - Tagliaferri, G.
AU - Tanvir, N. R.
AU - Watson, D. J.
AU - Wiersema, K.
AU - Wijers, R. A.M.J.
PY - 2011/7/1
Y1 - 2011/7/1
N2 - We report on the spectroscopic detection of supernova SN 2010ma associated with the long gamma-ray burst GRB 101219B. We observed the optical counterpart of the GRB on three nights with the X-shooter spectrograph at the Very Large Telescope. From weak absorption lines, we measure a redshift of z = 0.55. The first-epoch UV-near-infrared afterglow spectrum, taken 11.6 hr after the burst, is well fit by a power law consistent with the slope of the X-ray spectrum. The second- and third-epoch spectra (obtained 16.4 and 36.7days after the burst), however, display clear bumps closely resembling those of the broad-lined type-Ic SN 1998bw if placed at z = 0.55. Apart from demonstrating that spectroscopic SN signatures can be observed for GRBs at these large distances, our discovery makes a step forward in establishing a general connection between GRBs and SNe. In fact, unlike most previous unambiguous GRB-associated SNe, GRB 101219B has a large gamma-ray energy (E iso = 4.2 × 1051 erg), a bright afterglow, and obeys the "Amati" relation, thus being fully consistent with the cosmological population of GRBs.
AB - We report on the spectroscopic detection of supernova SN 2010ma associated with the long gamma-ray burst GRB 101219B. We observed the optical counterpart of the GRB on three nights with the X-shooter spectrograph at the Very Large Telescope. From weak absorption lines, we measure a redshift of z = 0.55. The first-epoch UV-near-infrared afterglow spectrum, taken 11.6 hr after the burst, is well fit by a power law consistent with the slope of the X-ray spectrum. The second- and third-epoch spectra (obtained 16.4 and 36.7days after the burst), however, display clear bumps closely resembling those of the broad-lined type-Ic SN 1998bw if placed at z = 0.55. Apart from demonstrating that spectroscopic SN signatures can be observed for GRBs at these large distances, our discovery makes a step forward in establishing a general connection between GRBs and SNe. In fact, unlike most previous unambiguous GRB-associated SNe, GRB 101219B has a large gamma-ray energy (E iso = 4.2 × 1051 erg), a bright afterglow, and obeys the "Amati" relation, thus being fully consistent with the cosmological population of GRBs.
KW - gamma-ray burst: general
KW - gamma-ray burst: individual (GRB 101219B)
KW - supernovae: individual (SN 2010ma)
UR - http://www.scopus.com/inward/record.url?scp=79960916698&partnerID=8YFLogxK
U2 - 10.1088/2041-8205/735/1/L24
DO - 10.1088/2041-8205/735/1/L24
M3 - Article
AN - SCOPUS:79960916698
SN - 2041-8205
VL - 735
JO - Astrophysical Journal Letters
JF - Astrophysical Journal Letters
IS - 1
M1 - L24
ER -