Could long-period transients be powered by primordial black hole capture

Thomas W. Baumgarte, Stuart L. Shapiro

Research output: Contribution to journalArticlepeer-review


Long-period radio transients have unusual properties that challenge their interpretation as pulsars or magnetars. We examine whether they might instead be powered by primordial black holes (PBHs) making repeated passages through a host star, thereby providing a signature of elusive dark-matter candidates. We demonstrate that constraints derived from the transients' period and period derivative alone already rule out this scenario for most potential host stars. While white dwarfs may satisfy these constraints, they are unlikely to capture PBHs in the required mass range.

Original languageEnglish (US)
Article number063004
JournalPhysical Review D
Issue number6
StatePublished - Mar 15 2024

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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