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36 papers · 2 filters
Effects of Strong Magnetic Fields in Strange Baryonic Matter
A. E. Broderick, M. Prakash, J. M. Lattimer
We investigate the effects of very strong magnetic fields upon the equation of state of dense bayonic matter in which hyperons are present. In the presence of a magnetic field, the…
Strategies for prompt searches for GRB afterglows: the discovery of the GRB 001011 optical/near-infrared counterpart using colour-colour selection
J. Gorosabel, J. U. Fynbo, J. Hjorth +25
We report the discovery of the optical and near-infrared counterparts to GRB 001011. The GRB 001011 error box determined by Beppo-SAX was simultaneously imaged in the near-infrared…
Error analysis of the photometric redshift tecnique
A. Fernandez-Soto, K. M. Lanzetta, H. -W. Chen +2
We present a calculation of the systematic component of the error budget in the photometric redshift technique. We make use of it to describe a simple technique that allows for the…
The Star Formation Rate Intensity Distribution Function--Implications for the Cosmic Star Formation Rate History of the Universe
Kenneth M. Lanzetta, Noriaki Yahata, Sebastian Pascarelle +2
We address the effects of cosmological surface brightness dimming on observations of faint galaxies by examining the distribution of "unobscured" star formation rate intensities ve…
SCUBA sub-millimeter observations of gamma-ray bursters: II. GRB 991208, 991216, 000301C, 000630, 000911, 000926
I. A. Smith, R. P. J. Tilanus, R. A. M. J. Wijers +4
We discuss our ongoing program of Target of Opportunity sub-millimeter observations of gamma-ray bursts (GRBs) using the Sub-millimetre Common-User Bolometer Array (SCUBA) on the J…
Broad and shifted iron-group emission lines in gamma-ray bursts as tests of the hypernova scenario
G. C. McLaughlin, R. A. M. J. Wijers, G. E. Brown +1
In the hypernova/collapsar model of gamma-ray bursts, it is natural that radiation is emitted by the inner engine for some time after the burst. This has been discussed as a possib…