Pulsar searches in nearby dwarf spheroidal galaxies

Eduardo Rubio-Herrera, Thomas MacCarone

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

We have been undertaking a comprehensive survey for pulsars and fast radio transients in the dwarf spheroidal satellite galaxies of the Milky Way using the Green Bank Radio Telescope operating at a central frequency of 350 MHz. Our search pipeline allows the detection of periodical signals and single dispersed pulses and it is optimized to search for millisecond radio pulsars. Here we present preliminary results of the searches we have conducted in the Ursa Minoris, Draco and Leo I dwarf spheroidal satellite galaxies. Our searches have revealed no periodic signals but a few unconfirmed millisecond single pulses at various dispersion measures, possibly related to neutron stars. Detecting neutron stars in these systems can potentially help to test the existence of haloes of dark matter surrounding these systems as predicted by Dehnen & King (2006).

Original languageEnglish
Title of host publicationNeutron Stars and Pulsars
Subtitle of host publicationChallenges and Opportunities after 80 years
EditorsJoeri Van Leeuwen
Pages111-114
Number of pages4
EditionS291
DOIs
StatePublished - Aug 2012

Publication series

NameProceedings of the International Astronomical Union
NumberS291
Volume8
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221

Keywords

  • galaxies: dwarf spheroidals
  • individual pulses
  • pulsars: general
  • searches
  • stars: neutron

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