Other
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21548117b&link_type=abstract
American Astronomical Society, AAS Meeting #215, #481.17; Bulletin of the American Astronomical Society, Vol. 42, p.573
Other
Scientific paper
GRBs offer a unique window into the high redshift universe. GRBs 050904, 080913, and 090423 proved that bright optical GRB afterglows can be used to measure the star formation rate and to probe galaxies and the IGM out to at least z 8, and in principle they can be detected out to z 12. At present, we have no way of immediately measuring the redshift from space, and must rely on ground-based redshift measurements of GRBs discovered by Swift and other spacecraft to find high redshift bursts. This introduces long delays in the identification of high redshift bursts.
JANUS is a proposed mission that is designed to measure GRB redshifts on-board and to announce the redshifts within minutes of the GRB onset, thus enabling ground-based spectroscopic efforts to concentrate on afterglows known to be at high z. JANUS features a burst detector optimized for high redshift bursts (XRFM) and a near IR telescope with low resolution spectroscopy (NIRT). Here we describe the XRFM instrument.
Burrows David N.
Falcone Abraham
JANUS Team
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