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Center for Astrophysics Research and Technologies Seminar Series Information

 

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Classification of Unassociated Gamma-Ray Sources via Radio Spectral Index

Thursday November 19, 2020
2:00 pm


 Presenter:  Seth Bruzewski (UNM)
 Series:  Center for Astrophysics Research and Technologies Seminar Series
 Abstract:  For the duration of the Fermi Gamma-Ray Space Telescope's mission, approximately one-third of the point sources identified have been noted as "unassociated," meaning that they seem to have no known counterpart at any other wavelength/frequency. This mysterious sector of the gamma-ray sky is perhaps one of the largest unknowns in current astronomical pursuits, and as such has been probed extensively by various techniques at various frequencies. Radio frequencies have been one of the most fruitful, producing a large fraction of the identified and associated Active Galactic Nuclei (AGN) and Pulsars noted in each update of the point source catalogs. Here we present the results from our analysis of unassociated gamma-ray fields in the 2nd Data Release of the 4th Fermi Point Source Catalog (4FGL-DR2), along with a description of our novel technique for classifying sources via their radio spectral indices.
 Host:  Gregory Taylor
 Location:  Zoom

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