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Updated: May 11, 2026
10:52
Direct Imaging of Laser-driven Ultrafast Molecular Rotation
Published on: February 4, 2017
A novel explosive process is required for the gamma-ray burst GRB 060614
A Gal-Yam1, D B Fox, P A Price
1Division of Physics, Mathematics and Astronomy, California Institute of Technology, Pasadena, California 91125, USA. avishay@astro.caltech.edu
Nature
|December 22, 2006
Summary
Optical observations of gamma-ray bursts (GRBs) challenge existing models. GRB 060614, a long-duration event, occurred without a supernova, suggesting novel explosive processes or progenitor types may be involved.
Area of Science:
- Astrophysics
- High-energy astrophysics
Background:
- Gamma-ray bursts (GRBs) are powerful cosmic explosions.
- Long-duration GRBs are typically linked to massive star deaths (collapsars) and supernovae.
- Short-duration GRBs are thought to originate from compact object mergers.
Purpose of the Study:
- To investigate the origin of GRB 060614, a long-duration gamma-ray burst.
- To determine if GRB 060614 was associated with a supernova.
- To explore new models for GRB progenitors.
Main Methods:
- Optical observations of GRB 060614.
- Analysis of host galaxy properties (redshift z = 0.125).
Main Results:
- The absence of an associated supernova was confirmed for GRB 060614.
- GRB 060614's host galaxy properties differ from typical long-duration GRB hosts.
- The event's duration was approximately 100 seconds.
Conclusions:
- The findings challenge the standard collapsar model for long-duration GRBs.
- A new explosive process or a novel GRB progenitor is likely required.
- GRB 060614 may represent a new class of gamma-ray burst event.
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