An X-ray all-sky monitor with extraordinary sensitivity

Details An X-ray all-sky monitor with extraordinary sensitivity An X-ray all-sky monitor with extraordinary sensitivity

Apr 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996mnras.279..733p&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 279, Issue 3, pp. 733-750.

Astronomy and Astrophysics

Astronomy

26

Instrumentation: Detectors, Space Vehicles, Telescopes, Surveys, X-Rays: General

Scientific paper

We set forth a conceptual design for an X-ray all-sky monitor based on lobster-eye wide-field telescopes. This instrument, suitable for a small satellite, would monitor the flux of objects as faint as 2x10^-12 erg cm^-2 s^-1 (0.5-2.4 keV) on a daily basis with a signal-to-noise ratio of 5. Sources would be located to 1-2 arcmin. Detailed simulations show that cross-talk from the cruciform lobster images would not significantly compromise performance. At this sensitivity limit, we could monitor not just X-ray binaries, but also fainter classes of X-ray sources. Hundreds of active galactic nuclei, coronal sources and cataclysmic variables could be tracked on a daily basis. Large numbers of fast transients should be visible, including gamma-ray bursts and the soft X-ray breakout of nearby Type II supernovae.

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