Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-26T17:32:29.432Z Has data issue: false hasContentIssue false

GRB host galaxies: theoretical investigation

Published online by Cambridge University Press:  05 September 2012

Jirong Mao*
Affiliation:
Korea Astronomy and Space Science Institute 776, Daedeokdae-ro, Yuseong-gu, Daejeon, Republic of Korea305-348 email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Long gamma-ray bursts (GRBs) can be linked to the massive stars and their host galaxies are assumed to be the star-forming galaxies within small dark matter halos. We apply a galaxy evolution model, in which the star formation process inside the virialized dark matter halo at a given redshift is achieved. The star formation rates (SFRs) in the GRB host galaxies at different redshifts can be derived from our model. The related stellar masses, luminosities, and metalicities of these GRB host galaxies are estimated. We also calculate the X-ray and optical absorption of GRB afterglow emission. At higher redshift, the SFR of host galaxy is stronger, and the absorption in the X-ray and optical bands of GRB afterglow is stronger, when the dust and metal components are locally released, surrounding the GRB environment. These model predictions are compared with some observational data as well.

Type
Poster Papers
Copyright
Copyright © International Astronomical Union 2012

References

Basa, S., et al. 2012, arXiv: 1201.6383Google Scholar
Granato, G. L., De Zotti, G., Silva, L., Bressan, A., & Danese, L. 2004, ApJ, 600, 580CrossRefGoogle Scholar
Mao, J., Lapi, A., Granato, G. L., de Zotti, G., & Danese, L. 2007, ApJ, 667, 655CrossRefGoogle Scholar
Mao, J. 2010, ApJ, 717, 140CrossRefGoogle Scholar
Tanvir, N. R., et al. 2012, arXiv: 1201.6074Google Scholar