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A Combined Radio Multi-Survey Catalog of Fermi Unassociated Sources
- Source :
- The Astrophysical Journal, Vol 943, Iss 1, p 51 (2023)
- Publication Year :
- 2023
- Publisher :
- IOP Publishing, 2023.
-
Abstract
- Approximately one-third of existing γ -ray sources identified by the Fermi Gamma-Ray Space Telescope are considered to be unassociated, with no known counterpart at other frequencies/wavelengths. These sources have been the subject of intense scrutiny and observational effort during the observatory’s mission lifetime, and here we present a method of leveraging existing radio catalogs to examine these sources without the need for specific dedicated observations, which can be costly and complex. Via the inclusion of many sensitive low-frequency catalogs we specifically target steep-spectrum sources such as pulsars. This work has found steep-spectrum radio sources contained inside 591 Fermi unassociated fields, with at least 21 of them being notable for having pulsar-like γ -ray properties as well. We also identify a number of other fields of interest based on various radio and γ -ray selections.
Details
- Language :
- English
- ISSN :
- 15384357
- Volume :
- 943
- Issue :
- 1
- Database :
- Directory of Open Access Journals
- Journal :
- The Astrophysical Journal
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.62d9ff41636e42cda98631ab1d7690d8
- Document Type :
- article
- Full Text :
- https://doi.org/10.3847/1538-4357/acaa33