Light-curve calculations of supernovae from fallback gamma-ray bursts

Chris L. Fryer, Aimee L. Hungerford, Patrick Young

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

The currently favored model for long-duration gamma-ray bursts (GRBs) invokes explosions from the collapse of a massive star down to a black hole, either directly or through fallback. Those GRBs forming via fallback will produce much less radioactive nickel, and hence it has been argued (without any real calculation) that these systems produce dim supernovae. These fallback black hole GRBs have recently been argued as possible progenitors of a newly discovered set of GRBs lacking any associated supernovae. Here we present the first ever radiation-hydrodynamics calculations of the light curves produced in the hypernova explosion by a delayed-fallback gamma-ray burst. We find that the bolometric light curve is dominated by shock-deposited energy, not the decay of radioactive elements. As such, observations of such bursts actually probe the density in the progenitor wind more than it does the production of radioactive nickel.

Original languageEnglish (US)
JournalAstrophysical Journal
Volume662
Issue number2 II
DOIs
StatePublished - Jun 20 2007

Fingerprint

gamma ray bursts
light curve
supernovae
explosion
nickel
hydrodynamics
probe
explosions
energy
massive stars
radioactive isotopes
bursts
shock
calculation
probes
decay
radiation

Keywords

  • Gamma rays: bursts
  • Nuclear reactions, nucleosynthesis, abundances
  • Supernovae: general

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Light-curve calculations of supernovae from fallback gamma-ray bursts. / Fryer, Chris L.; Hungerford, Aimee L.; Young, Patrick.

In: Astrophysical Journal, Vol. 662, No. 2 II, 20.06.2007.

Research output: Contribution to journalArticle

Fryer, Chris L. ; Hungerford, Aimee L. ; Young, Patrick. / Light-curve calculations of supernovae from fallback gamma-ray bursts. In: Astrophysical Journal. 2007 ; Vol. 662, No. 2 II.
@article{2d7a8d9d79aa437ea226c95f9e4f3492,
title = "Light-curve calculations of supernovae from fallback gamma-ray bursts",
abstract = "The currently favored model for long-duration gamma-ray bursts (GRBs) invokes explosions from the collapse of a massive star down to a black hole, either directly or through fallback. Those GRBs forming via fallback will produce much less radioactive nickel, and hence it has been argued (without any real calculation) that these systems produce dim supernovae. These fallback black hole GRBs have recently been argued as possible progenitors of a newly discovered set of GRBs lacking any associated supernovae. Here we present the first ever radiation-hydrodynamics calculations of the light curves produced in the hypernova explosion by a delayed-fallback gamma-ray burst. We find that the bolometric light curve is dominated by shock-deposited energy, not the decay of radioactive elements. As such, observations of such bursts actually probe the density in the progenitor wind more than it does the production of radioactive nickel.",
keywords = "Gamma rays: bursts, Nuclear reactions, nucleosynthesis, abundances, Supernovae: general",
author = "Fryer, {Chris L.} and Hungerford, {Aimee L.} and Patrick Young",
year = "2007",
month = "6",
day = "20",
doi = "10.1086/519523",
language = "English (US)",
volume = "662",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "2 II",

}

TY - JOUR

T1 - Light-curve calculations of supernovae from fallback gamma-ray bursts

AU - Fryer, Chris L.

AU - Hungerford, Aimee L.

AU - Young, Patrick

PY - 2007/6/20

Y1 - 2007/6/20

N2 - The currently favored model for long-duration gamma-ray bursts (GRBs) invokes explosions from the collapse of a massive star down to a black hole, either directly or through fallback. Those GRBs forming via fallback will produce much less radioactive nickel, and hence it has been argued (without any real calculation) that these systems produce dim supernovae. These fallback black hole GRBs have recently been argued as possible progenitors of a newly discovered set of GRBs lacking any associated supernovae. Here we present the first ever radiation-hydrodynamics calculations of the light curves produced in the hypernova explosion by a delayed-fallback gamma-ray burst. We find that the bolometric light curve is dominated by shock-deposited energy, not the decay of radioactive elements. As such, observations of such bursts actually probe the density in the progenitor wind more than it does the production of radioactive nickel.

AB - The currently favored model for long-duration gamma-ray bursts (GRBs) invokes explosions from the collapse of a massive star down to a black hole, either directly or through fallback. Those GRBs forming via fallback will produce much less radioactive nickel, and hence it has been argued (without any real calculation) that these systems produce dim supernovae. These fallback black hole GRBs have recently been argued as possible progenitors of a newly discovered set of GRBs lacking any associated supernovae. Here we present the first ever radiation-hydrodynamics calculations of the light curves produced in the hypernova explosion by a delayed-fallback gamma-ray burst. We find that the bolometric light curve is dominated by shock-deposited energy, not the decay of radioactive elements. As such, observations of such bursts actually probe the density in the progenitor wind more than it does the production of radioactive nickel.

KW - Gamma rays: bursts

KW - Nuclear reactions, nucleosynthesis, abundances

KW - Supernovae: general

UR - http://www.scopus.com/inward/record.url?scp=34547313516&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34547313516&partnerID=8YFLogxK

U2 - 10.1086/519523

DO - 10.1086/519523

M3 - Article

AN - SCOPUS:34547313516

VL - 662

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 2 II

ER -