AAS 207th Meeting, 8-12 January 2006
Session 154 Planetesimals, Protostellar Disks and Cosmic Rays
Oral, Wednesday, 10:00-11:30am, January 11, 2006, Balcony C/D

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

A.L. Melott, L. Ejzak (University of Kansas), B.C. Thomas (Washburn University)

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.

If you would like more information about this abstract, please follow the link to http://kusmos.phsx.ku.edu/\~Emelott/Astrobiology.htm. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

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