Статья

Spectroscopic Discovery of the Supernova 2003dh Associated with GRB 030329

K. Z. StanekHarvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138T. MathesonHarvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138P. GarnavichDepartment of Physics, University of Notre Dame, 225 Nieuwland Science Hall, Notre Dame, IN 46556Paul MartiniCarnegie Observatories, 813 Santa Barbara Street, Pasadena, CA 91101Z. BenkhaldounSmithsonian Institution, Fred Lawrence Whipple Observatory, 670 Mount Hopkins Road, P.O. Box 97, Amado, AZ 85645Nelson CaldwellHarvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138Peter ChallisHarvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138Warren R. BrownHarvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138Rudolph E. SchildHarvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138K. KrisciunasCerro Tololo Inter-American Observatory, Casilla 603, La Serena, ChileM. CalkinsSmithsonian Institution, Fred Lawrence Whipple Observatory, 670 Mount Hopkins Road, P.O. Box 97, Amado, AZ 85645Janice LeeSteward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85718Nimish P. HathiDepartment of Physics and Astronomy, Arizona State University, Tempe, AZ 85287-1504Rolf A. JansenDepartment of Physics and Astronomy, Arizona State University, Tempe, AZ 85287-1504R. WindhorstDepartment of Physics and Astronomy, Arizona State University, Tempe, AZ 85287-1504L. EchevarriaDepartment of Physics and Astronomy, Arizona State University, Tempe, AZ 85287-1504Daniel J. EisensteinSteward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85718B. PindorPrinceton University Observatory, Princeton, NJ 08544Edward W. OlszewskiSteward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85718Paul HardingDepartment of Astronomy, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106K. L. PageDepartment of Physics, University of Notre Dame, 225 Nieuwland Science Hall, Notre Dame, IN 46556D. BersierHarvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138

2003en

ABI

Аннотация

We present early observations of the afterglow of the Gamma-Ray Burst (GRB) 030329 and the spectroscopic discovery of its associated supernova 2003dh. We obtained spectra of the afterglow of GRB 030329 each night from March 30.12 (0.6 days after the burst) to April 8.13 (UT) (9.6 days after the burst). The spectra cover a wavelength range of 350 nm to 850 nm. The early spectra consist of a power-law continuum (F_{nu} ~ nu^{-0.9}) with narrow emission lines originating from HII regions in the host galaxy, indicating a low redshift of z=0.1687. However, our spectra taken after 2003 Apr. 5 show broad peaks in flux characteristic of a supernova. Correcting for the afterglow emission, we find the spectrum of the supernova is remarkably similar to the type Ic `hypernova' SN 1998bw. While the presence of supernovae have been inferred from the light curves and colors of GRB afterglows in the past, this is the first direct, spectroscopic confirmation that a subset of classical gamma-ray bursts originate from supernovae.

Идентификаторы

DOI: 10.1086/376976

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Цитирований: 7Использованных источников: 0

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