Incremental Fermi Large Area Telescope Fourth Source Catalog

  title={Incremental Fermi Large Area Telescope Fourth Source Catalog},
  author={Fermi-LAT Collaboration S. Abdollahi and Fabio Acero and Luca Baldini and Jean Ballet and Denis Bastieri and Ronaldo Bellazzini and Bijan Berenji and A. Berretta and Elisabetta Bissaldi and Roger D. Blandford and Elliott D. Bloom and R. Bonino and A. Brill and Richard J. Britto and Philippe Bruel and Toby Burnett and Sara Buson and R. A. Cameron and Regina Caputo and Patrizia A. Caraveo and D. Castro and Sylvain Chaty and Teddy Cheung and Graziano Chiaro and N. Cibrario and Stefano Ciprini and J. Coronado-Bl{\'a}zquez and Milena Crnogor{\vc}evi{\'c} and S. Cutini and Filippo D’Ammando and Salvatore De Gaetano and S. W. Digel and Niccol{\`o} Di Lalla and Feraol Fana Dirirsa and L. Di Venere and Alberto Dom{\'i}nguez and Vandad Fallah Ramazani and Stephen Fegan and Elizabeth C. Ferrara and Alessio Fiori and Henrike Fleischhack and Anna Franckowiak and Yasushi Fukazawa and Stefan Funk and Piergiorgio Fusco and Giorgio Galanti and V. Gammaldi and Fabio Gargano and Simone Garrappa and Dario Gasparrini and Federica Giacchino and Nicola Giglietto and Francesco Giordano and Marcello Giroletti and Tom Glanzman and D. Green and Isabelle A. Grenier and M.-H. Grondin and Lucas Guillemot and Sylvain Guiriec and Michael Gustafsson and Alice K. Harding and Liz Hays and J. W. Hewitt and Deirdre Horan and Xian Hou and Guðlaugur J{\'o}hannesson and Christopher M. Karwin and Taishu Kayanoki and Matthew T. Kerr and Michael Kuss and David Landriu and S. Larsson and Luca Latronico and M. Lemoine-Goumard and Jian Li and Ioannis Liodakis and Francesco Longo and Francesco Loparco and B. Lott and Pasquale Lubrano and Simone Maldera and Dmitry Malyshev and Alberto Manfreda and G. Mart{\'i}-Devesa and Mario Nicola Mazziotta and I. Mereu and Manuel Meyer and P. F. Michelson and Nestor Mirabal and W. Mitthumsiri and Tsunefumi Mizuno and Alexander A Moiseev and M. E. Monzani and A. Morselli and Igor V. Moskalenko and Michela Negro and Eric Nuss and Nicola Omodei and Monica Orienti and E. Orlando and D. Paneque and Zhiyuan Pei and Jeremy S. Perkins and Massimo Persic and Melissa Pesce-Rollins and Vah{\'e} Petrosian and Roberta Pillera and Helen Lai Man Poon and Troy A. Porter and Giacomo Principe and S. Rain{\'o} and Riccardo Rando and Babita Rani and Massimiliano Razzano and Soebur Razzaque and A. Reimer and O. Reimer and Thierry Reposeur and Miguel Sanchez-conde and Pablo Miguel Saz Parkinson and L. Scotton and Davide Serini and Carmelo Sgro’ and Eric J. Siskind and David A. Smith and Gloria Spandre and Paolo Spinelli and Kohei Sueoka and Daniel J. Suson and Hiroyasu Tajima and Dong-Kil Tak and Jana Thayer and D. J. Thompson and Diego F. Torres and Eleonora Troja and Janeth Valverde and Kent S. Wood and Gabrijela Zaharijas},
  journal={The Astrophysical Journal Supplement Series},
We present an incremental version (4FGL-DR3, for Data Release 3) of the fourth Fermi Large Area Telescope (LAT) catalog of γ-ray sources. Based on the first 12 years of science data in the energy range from 50 MeV to 1 TeV, it contains 6658 sources. The analysis improves on that used for the 4FGL catalog over eight years of data: more sources are fit with curved spectra, we introduce a more robust spectral parameterization for pulsars, and we extend the spectral points to 1 TeV. The spectral… 
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In the cold dark matter scenario, galactic dark matter halos are populated with a large number of smaller subhalos. Previous work has shown that dark matter annihilations in subhalos can generate a


LAT 4FGL-DR3 FITS format: LAT Point Source Catalog extension. Changes since 4FGL appear in Italics
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