A Combined Radio Multi-Survey Catalog of Fermi Unassociated Sources
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’...
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| Veröffentlicht in: | The Astrophysical journal 2023-01, Vol.943 (1), p.51 |
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| creator | Bruzewski, S. Schinzel, F. K. Taylor, G. B. |
| description | 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. |
| doi_str_mv | 10.3847/1538-4357/acaa33 |
| format | Article |
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γ
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γ
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γ
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γ
-ray properties as well. We also identify a number of other fields of interest based on various radio and
γ
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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.</abstract><cop>Philadelphia</cop><pub>The American Astronomical Society</pub><doi>10.3847/1538-4357/acaa33</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0001-6495-7731</orcidid><orcidid>https://orcid.org/0000-0001-7887-1912</orcidid><orcidid>https://orcid.org/0000-0001-6672-128X</orcidid><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| source | DOAJ Directory of Open Access Journals; Institute of Physics Open Access Journal Titles; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection |
| subjects | Active galaxies Astrophysics Gamma ray sources Gamma rays Gamma-ray astronomy High energy astrophysics Pulsars Radio Radio astronomy Radio continuum emission Radio source catalogs Radio sources (astronomy) Space telescopes Spectral index Surveys Wavelengths |
| title | A Combined Radio Multi-Survey Catalog of Fermi Unassociated Sources |
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