Abstract
Abstract We present the results of the optical spectroscopy follow up of a sample of 28 unclassified blazars from the Third Fermi-LAT Catalog of High-Energy Sources (3FHL). All the spectra were taken with the 4 m Mayall telescope at Kitt Peak. With this follow-up program, we are able to classify 27 out of 28 objects as BL Lacs, while the remaining one is a flat spectrum radio quasar. We determine a redshift (z) for three of these objects and a lower limit on z for other four sources: the farthest object for which we obtain a redshift has z > 0.836. These results are part of a more extended campaign of optical spectroscopy follow up of 3FHL blazars, aimed to obtain a complete sample of blazars at >10 GeV, which will then be used to extend our knowledge on blazar emission mechanisms and on the extragalactic background light.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
