Gamma-ray bursts and the Earth: Impacts of spectral and temporal variability

Details Gamma-ray bursts and the Earth: Impacts of spectral and temporal variability Gamma-ray bursts and the Earth: Impacts of spectral and temporal variability

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...20715407m&link_type=abstract

American Astronomical Society Meeting 207, #154.07; Bulletin of the American Astronomical Society, Vol. 37, p.1415

Biology

Scientific paper

It is likely that several gamma-ray bursts have been beamed at the Earth from within our galaxy in the last Gy. In previous work, we have established several signficant atmospheric consequences of a galactic typical long-burst GRB, pointing to association with at least one mass extinction. Since GRBs have a wide range of spectral and temporal behavior, we have now explored some of the consquences of varying duration, strong fluctations in flux, and softer/harder spectra.
We gratefully acknowlege the support of the NASA Astrobiology: Exobiology and Evolutionary Biology program.

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