Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010head...11.4023u&link_type=abstract
American Astronomical Society, HEAD meeting #11, #40.23; Bulletin of the American Astronomical Society, Vol. 41, p.724
Astronomy and Astrophysics
Astronomy
Scientific paper
We will describe the scientific potential of the SXI instrument on board EXIST. One of the primary objectives is to study with unprecedented sensitivity the most enigmatic high energy sources in the Universe, such as high redshift GRBs, which will be pointed promptly by the Spacecraft by autonomous trigger based on hard X-ray localization
on board. The presence of a soft X-ray telescope with an effective area of 950 cm2 in the energy band 0.2-3 keV and extended response up to 10 keV will make it possible broadband studies from 0.1 to 600 keV of all classes of astronomical objecs. In particular, EXIST will be the instrument to investigate AGNs states and spectral components as well as their variability, to study the prompt and afterglow emission of GRBs, located with arcsec position, since the early phases, which will help to constrain the emission models and finally, help the identification of sources in the EXIST hard X-ray survey and the characterization of the transient events detected. In parallel, SXI will also perform surveys: a scanning survey with sky coverage 2pi and limiting flux of 5 × 10-14 cgs.
Bassani Loredana
Bazzano Angela
Caraveo Patrizia
della Ceca Roberto
EXIST Team
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