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Characterizing Sky Variability for Multi-Messenger Astronomy
American Physical Society Four Corners Section (2012)
  • Rachel K. Nydegger, Utah State University
  • Katie Breivik, Utah State University
  • Shane L. Larson, Ph.D., Utah State University
Abstract
Multi-messenger astronomy employs both electromagnetic and gravitational -wave detectors to paint a richer picture of celestial objects, providing more depth and information. The interferometers utilized for gravitational-wave observations receive input from very broad fields of view on the sky, typically a few square degrees. To have simultaneous electromagnetic observations (typically less than one square degree) requires innovative techniques for the telescopes to find the origin of radiation. One idea is to “tile” the view of the interferometer, using multiple telescopes to simultaneously point at different areas of the field to observe the source. One di"culty of this observing paradigm is distinguishing random electromagnetic variable sources from a gravitational-wave counterpart. To better understand this problem, this project repeatedly observes a single field on the sky. Each observation is analyzed to count the number of sources that appear in the field as a function of brightness. Repeating this process over time will yield the frequency of random optical transients, as well as characterize the population and brightness distribution of variables in the field. Future work will extend this observation campaign to cover different galactic latitudes.
Keywords
  • gravitational waves,
  • multi-messenger astronomy
Publication Date
Fall October 26, 2012
Citation Information
“Characterizing Sky Variability for Multi-Messenger Astronomy”. Rachel Nydegger, Katie Breivik, Shane L. Larson Ph.D. Poster. American Physical Society. Four Corners Section, Socorro, Oct. 26, 2012.