Do the GRBs Trace the SFR? -- Testing Models of the Observed Gamma-Ray Burst Redshift Distribution

Details Do the GRBs Trace the SFR? -- Testing Models of the Observed Gamma-Ray Burst Redshift Distribution Do the GRBs Trace the SFR? -- Testing Models of the Observed Gamma-Ray Burst Redshift Distribution

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...197.7306s&link_type=abstract

American Astronomical Society, 197th AAS Meeting, #73.06; Bulletin of the American Astronomical Society, Vol. 32, p.1519

Astronomy and Astrophysics

Astronomy

Scientific paper

It is widely believed that the gamma-ray bursts (GRBs) are linked with the deaths of massive stars, and thus should trace massive star formation. Unfortunately, directly comparing the observed redshift distribution of GRBs with the distribution expected from the star formation rate (SFR) is unwise. This is due to selection effects that bias against the redshift determination of high-z bursts. We present a form of the V/V{max} test that allows us to treat the complicated selection functions for each burst in a straightforward way. This allows us to use the set of spectroscopically-determined GRB redshifts to test models of the GRB progenitor density evolution. We apply this test to determine if the observed GRB redshift distribution is consistent with a density evolution that traces the SFR. Examined are three models of the SFR that span reasonable estimates, as well as a simple null-hypothesis that the GRB redshift distribution traces a constant comoving density. The current data are enough to afford some discriminatory power among the models. Results of the tests will be discussed.

Affiliated with

Also associated with

No associations

Rating

Do the GRBs Trace the SFR? -- Testing Models of the Observed Gamma-Ray Burst Redshift Distribution does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Do the GRBs Trace the SFR? -- Testing Models of the Observed Gamma-Ray Burst Redshift Distribution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Do the GRBs Trace the SFR? -- Testing Models of the Observed Gamma-Ray Burst Redshift Distribution will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1725557