Luminous persistent sources in nearby galaxies search Virtual Observatory Resource

Authors
  1. Ofek E.O.
  2. Published by
    CDS
Abstract

The localization of the repeating fast radio burst (FRB), FRB 121102, suggests that it is associated with a persistent radio-luminous compact source in the FRB host galaxy. Using the FIRST radio catalog, I present a search for luminous persistent sources in nearby galaxies, with radio luminosities >10% of the FRB 121102 persistent source luminosity. The galaxy sample contains about 30% of the total galaxy g-band luminosity within <108Mpc, in a footprint of 10600deg^2^. After rejecting sources likely due to active galactic nuclei activity or background sources, I am left with 11 candidates that are presumably associated with galactic disks or star-formation regions. At least some of these candidates are likely to be due to chance alignment. In addition, I find 85 sources within 1" of galactic nuclei. Assuming that the radio persistent sources are not related to galactic nuclei and that they follow the galaxy g-band light, the 11 sources imply a 95% confidence upper limit on the space density of luminous persistent sources of <~5x10^-5^Mpc^-3^, and that at any given time only a small fraction of galaxies host a radio-luminous persistent source (<~10^-3^L_*_^-1^). Assuming a persistent source lifetime of 100 years, this implies a birth rate of <~5x10^-7^yr^-1^Mpc^-3^. Given the FRB volumetric rate, and assuming that all FRBs repeat and are associated with persistent radio sources, this sets a lower limit on the rate of FRB events per persistent source of >~0.8yr^-1^. I argue that these 11 candidates are good targets for FRB searches and I estimate the FRB event rate from these candidates.

Keywords
  1. radio-sources
  2. galaxies
  3. redshifted
  4. radio-continuum-emission
  5. x-ray-sources
Bibliographic source Bibcode
2017ApJ...846...44O
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/846/44
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/846/44
Document Object Identifer DOI
doi:10.26093/cds/vizier.18460044

Access

Web browser access HTML
https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/846/44
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/846/44
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/846/44
IVOA Table Access TAP
https://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/846/44/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/846/44/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/846/44/table1?

History

2018-05-28T10:32:28Z
Resource record created
2018-05-28T10:32:28Z
Created
2018-09-25T12:04:24Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr