@inproceedings{0ca35ac39bb84574beb712b7fd3157bf,
title = "Dark gamma-ray bursts in the swift era",
abstract = "We propose a new method for the classification of optically dark gamma-ray bursts (GRBs), based on the X-ray and optical-to-X-ray spectral indices of GRB afterglows, and utilizing the spectral capabilities of Swift. This method depends less on model assumptions than previous methods, and can be used as a quick diagnostic tool to identify optically sub-luminous bursts. With this method we can also find GRBs that are extremely bright at optical wavelengths. We show that the previously suggested correlation between the optical darkness and the X-ray/gamma-ray brightness is merely an observational selection effect.",
author = "{Van Der Horst}, {A. J.} and C. Kouveliotou and N. Gehrels and E. Rol and Wijers, {R. A.M.J.} and Cannizzo, {J. K.} and J. Racusin and Burrows, {D. N.}",
year = "2009",
doi = "10.1063/1.3155876",
language = "English (US)",
isbn = "9780735406704",
series = "AIP Conference Proceedings",
pages = "193--198",
booktitle = "Gamma-Ray Burst - 6th Huntsville Symposium",
note = "6th Huntsville Symposium on Gamma-Ray Bursts ; Conference date: 20-10-2008 Through 23-10-2008",
}