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Title: MULTI-MESSENGER ASTRONOMY OF GRAVITATIONAL-WAVE SOURCES WITH FLEXIBLE WIDE-AREA RADIO TRANSIENT SURVEYS

We explore opportunities for multi-messenger astronomy using gravitational waves (GWs) and prompt, transient low-frequency radio emission to study highly energetic astrophysical events. We review the literature on possible sources of correlated emission of GWs and radio transients, highlighting proposed mechanisms that lead to a short-duration, high-flux radio pulse originating from the merger of two neutron stars or from a superconducting cosmic string cusp. We discuss the detection prospects for each of these mechanisms by low-frequency dipole array instruments such as LWA1, the Low Frequency Array and the Murchison Widefield Array. We find that a broad range of models may be tested by searching for radio pulses that, when de-dispersed, are temporally and spatially coincident with a LIGO/Virgo GW trigger within a ∼30 s time window and ∼200–500 deg{sup 2} sky region. We consider various possible observing strategies and discuss their advantages and disadvantages. Uniquely, for low-frequency radio arrays, dispersion can delay the radio pulse until after low-latency GW data analysis has identified and reported an event candidate, enabling a prompt radio signal to be captured by a deliberately targeted beam. If neutron star mergers do have detectable prompt radio emissions, a coincident search with the GW detector network and low-frequencymore » radio arrays could increase the LIGO/Virgo effective search volume by up to a factor of ∼2. For some models, we also map the parameter space that may be constrained by non-detections.« less
Authors:
;  [1] ; ; ; ;  [2] ;  [3] ; ; ;  [4] ;  [5] ;  [6] ;  [7]
  1. Department of Physics, University of Maryland, College Park, MD 20742 (United States)
  2. Department of Physics, Virginia Tech, Blacksburg, VA 24061 (United States)
  3. Department of Physics, The College of New Jersey, Ewing, NJ 08628 (United States)
  4. Department of Physics and Astronomy, University of New Mexico, Albuquerque NM, 87131 (United States)
  5. Department of Chemistry, Lehman College, Bronx, NY 10468 (United States)
  6. LIGO-California Institute of Technology, Pasadena, California CA 91125 (United States)
  7. Department of Physics, Long Island University, Brooklyn, NY 11201 (United States)
Publication Date:
OSTI Identifier:
22518741
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 812; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTRONOMY; ASTROPHYSICS; COSMIC RADIO SOURCES; DATA ANALYSIS; DIPOLES; GRAVITATIONAL WAVES; NEUTRON STARS; SPACE; TELESCOPES; TRANSIENTS