Micha Jerzy Micha owski

Spectral Energy Distributions of Gamma Ray Burst Host Galaxies

• Broschiertes Buch

Produktbeschreibung

This work is concentrated on the fitting of the
Spectral Energy Distribution (SED) templates to the
broad-band observational data of Gamma Ray Bursts
(GRB) host galaxies, which were bright in
submillimetre and/or radio wavelengths, namely hosts
of GRB 980703, GRB 000210, GRB 000418 and GRB 010222.
This is the first successful entire SED fitting, from
optical to radio wavelengths, achieved for GRB hosts.
I present constraints on their properties, including
the need for high dust temperatures, high star
formation rates (SFR) and low ages. I estimated very
conservative and robust lower limits on the dust
temperatures in a range from T 29 K to T 59 K.
Their SFRs derived from infrared emission range from
179 to 1211 solar masses per year and it places GRB
hosts in a category of highly star-forming galaxies.
I propose that the seeming contradiction of high SFRs
and blue optical colors of GRB hosts can be explained
by their low ages in a range from 90 Myr to 2 Gyr.

Produktdetails

• Verlag: VDM Verlag Dr. Müller
• Seitenzahl: 76
• Englisch
• ISBN-13: 9783639160260
• ISBN-10: 3639160266
• Artikelnr.: 26557120

Autorenporträt

Micha Jerzy Micha owski, MSc: studied Astronomy at the Dark
Cosmology Centre, Niels Bohr Institute, University of Copenhagen,
Denmark and Astronomical Observatory, Adam Mickiewicz University,
Poznan, Poland. Currently a PhD student at the Dark Cosmology
Centre. Main research interests: star-forming galaxies, gamma-ray
burst hosts, submm galaxies.