منابع مشابه
Looking for GRB progenitors
Using stellar binary population synthesis code we calculate the production rates and lifetimes of several types of possible GRB progenitors. We consider mergers of double neutron stars, black hole neutron stars, black hole white dwarfs and helium star mergers. We calibrate the results with the measured star formation rate history. We discuss the viability of each GRB model, and alternatively as...
متن کاملGRB Progenitors and Environment
— The study and knowledge of the environment of Gamma-Ray Bursts is of great interest from many points of view. For high redshift (z > 0.5) events, the structure of the ambient medium is one of the best indicators of the nature and properties of the progenitor. It also tells us about the last stages of the pre-explosion evolution of the progenitor. In addition, it is interesting in its own as a...
متن کاملGRB Progenitors and their environment
The detection of supernova features in the late spectra of several gamma-ray burst afterglows has shown that at least a fraction of long-duration gamma-ray bursts are associated to the final evolutionary stages of massive stars. Such direct observations are impossible for bursts located at redshift beyond z ∼ 0.5 and different methods must be used to understand the nature and properties of thei...
متن کامل: Implications for the Metallicity of GRB Progenitors
We present optical and near-IR observations of the host galaxy of GRB020127, for which we measure R−Ks = 6.2 mag. This is only the second GRB host to date, which is classified as an ERO. The spectral energy distribution is typical of a dusty starburst galaxy, with a redshift, z ≈ 1.9, a luminosity, L ≈ 5 L, and an inferred stellar mass of M∗ ∼ 10 11 − 10 M⊙, two orders of magnitude more massive...
متن کاملHost Galaxy of GRB 020127 : Implications for the Metallicity of GRB Progenitors
We present optical and near-IR observations of the host galaxy of GRB020127, for which we measure R−Ks = 6.2 mag. This is only the second GRB host to date, which is classified as an ERO. The spectral energy distribution is typical of a dusty starburst galaxy, with a redshift, z ≈ 1.9, a luminosity, L ≈ 5 L, and an inferred stellar mass of M∗ ∼ 10 11 − 10 M⊙, two orders of magnitude more massive...
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ژورنال
عنوان ژورنال: Astronomy & Geophysics
سال: 2013
ISSN: 1366-8781,1468-4004
DOI: 10.1093/astrogeo/att207