Program: GS-2022A-Q-226
| Title: | A spectroscopic follow-up campaign of unidentified 3FHL sources |
| PI: | Pablo Penil |
| Co-I(s): | Ross Silver, Marco Ajello, Stefano Marchesi, MEENAKSHI RAJAGOPAL, Alberto Dominguez, AMAN KAUR, Sara Cutini, Dario Gasparrini |
Abstract
The newly developed 3FHL catalog, the most extensive catalog of sources detected at >10 GeV, is the deepest look at the very high energy sky and will remain unrivaled for years to come. However, at the present day, the catalog spectroscopic completeness is relatively low (<50% of ~1500 sources), thus limiting its scientific applications. We propose for Gemini (-N and -S) spectroscopic follow-ups of 50 new, unclassified 3FHL sources with a bright Swift-XRT counterpart, which are likely to be blazars. In this proposal, we expect to observe ~50% of our sample. Characterizing a significant part (~25%) of the population of these new, unidentified 3FHL sources, this legacy project will both improve our knowledge of the blazar population and prepare the ground for future facilities, such as CTA.