Mathematics – Logic
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21540117w&link_type=abstract
American Astronomical Society, AAS Meeting #215, #401.17; Bulletin of the American Astronomical Society, Vol. 42, p.220
Mathematics
Logic
Scientific paper
LSST will open new opportunities to explore the variable and transient sky. The combination of all-sky coverage, consistent long-term monitoring, and flexible criteria for event identification will allow LSST to probe a large unexplored region of parameter space and discover new types of transients. LSST data will shed new light on a wide variety of astrophysical objects and events, from the familiar ground of classical variables in our Galaxy to exotic explosive cosmological transients. For example, identification of RR Lyrae stars out to 400 kpc will allow newly detailed maps of the Galactic halo and intergalactic region to be constructed. LSST's breadth and depth will also capture new samples of rare variables that inform our understanding of stellar evolution, such as AM CVn systems and both eruptive young and evolved stars. In addition, a vast diversity of new transients will be observed by LSST each night. LSST will generate 'alerts' within 60 seconds of detecting a new transient, permitting the community to follow up unusual events in greater detail. With an estimated 105 such alerts per night, effective classification will be required to identify the most interesting objects. LSST will be the instrument of choice for finding very rare and faint transients, as well as probing the distant Universe for the most luminous events. LSST will make localization for LIGO events possible, identify counterparts to GRBs and X-ray flashes, and discover new supernovae. Finally, LSST will expand the observational frontier of optical transients by probing new areas of parameter space that were not previously accessible. Many types of transient events are expected on theoretical grounds to inhabit this space, but have not yet been observed. Through observations of both new and known transient and variable objects, we can begin to understand their underlying fundamental physical processes, their commonalities, and differences.
Anderson Scott
Becker Andrew C.
Bloom Josh S.
Mahabal Ashish A.
Trimble Virginia
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