# A Search for Pulsed Very High-Energy Gamma Rays from Thirteen Young Pulsars in Archival VERITAS Data **Authors:** A. Archer (1), W. Benbow (2), R. Bird (3), R. Brose (4, 5), M., Buchovecky (3), J. H. Buckley (1), A. J. Chromey (6), W. Cui (7, 8), A., Falcone (9), Q. Feng (10), J. P. Finley (7), L. Fortson (11), A. Furniss, (12), A. Gent (13), O. Gueta (5), D. Hanna (10), T. Hassan (5), O. Hervet, (14), J. Holder (15), G. Hughes (2), T. B. Humensky (16), C. A. Johnson (14),, P. Kaaret (17), P. Kar (18), N. Kelley-Hoskins (5), M. Kertzman (19), D., Kieda (18), F. Krennrich (6), S. Kumar (15), M. J. Lang (20), T. T.Y. Lin, (10), A. McCann (10), P. Moriarty (20), R. Mukherjee (21), S. O'Brien (22),, R. A. Ong (3), A. N. Otte (13), D. Pandel (23), N. Park (24), A. Petrashyk, (16), M. Pohl (4, 5), E. Pueschel (5), J. Quinn (22), K. Ragan (10), G. T., Richards (15, 13), E. Roache (2), I. Sadeh (5), M. Santander (25), S. S., Scott (14), G. H. Sembroski (7), K. Shahinyan (11), I. Sushch (5), J. Tyler, (10), S. P. Wakely (24), A. Weinstein (6), R. M. Wells (6), P. Wilcox (17),, A. Wilhelm (4, 5), D. A. Williams (14), T. J Williamson (15), B. Zitzer, (10) ((1) Department of Physics, Washington University, St. Louis, MO 63130,, USA, (2) Fred Lawrence Whipple Observatory, Harvard-Smithsonian Center for, Astrophysics, Amado, AZ 85645, USA, (3) Department of Physics, Astronomy,, University of California, Los Angeles, CA 90095, USA, (4) Institute of, Physics, Astronomy, University of Potsdam, 14476 Potsdam-Golm, Germany,, (5) DESY, Platanenallee 6, 15738 Zeuthen, Germany, (6) Department of Physics, and Astronomy, Iowa State University, Ames, IA 50011, USA, (7) Department of, Physics, Astronomy, Purdue University, West Lafayette, IN 47907, USA, (8), Department of Physics, Center for Astrophysics, Tsinghua University,, Beijing 100084, China, (9) Department of Astronomy, Astrophysics, 525, Davey Lab, Pennsylvania State University, University Park, PA 16802, USA,, (10) Physics Department, McGill University, Montreal, QC H3A 2T8, Canada,, (11) School of Physics, Astronomy, University of Minnesota, Minneapolis,, MN 55455, USA, (12) Department of Physics, California State University - East, Bay, Hayward, CA 94542, USA, (13) School of Physics, Center for, Relativistic Astrophysics, Georgia Institute of Technology, 837 State Street, NW, Atlanta, GA 30332-0430, (14) Santa Cruz Institute for Particle Physics, and Department of Physics, University of California, Santa Cruz, CA 95064,, USA, (15) Department of Physics, Astronomy, the Bartol Research, Institute, University of Delaware, Newark, DE 19716, USA, (16) Physics, Department, Columbia University, New York, NY 10027, USA, (17) Department of, Physics, Astronomy, University of Iowa, Van Allen Hall, Iowa City, IA, 52242, USA, (18) Department of Physics, Astronomy, University of Utah,, Salt Lake City, UT 84112, USA, (19) Department of Physics, Astronomy,, DePauw University, Greencastle, IN 46135-0037, USA, (20) School of Physics,, National University of Ireland Galway, University Road, Galway, Ireland, (21), Department of Physics, Astronomy, Barnard College, Columbia University, NY, 10027, USA, (22) School of Physics, University College Dublin, Belfield,, Dublin 4, Ireland, (23) Department of Physics, Grand Valley State University,, Allendale, MI 49401, USA, (24) Enrico Fermi Institute, University of Chicago,, Chicago, IL 60637, USA, (25) Department of Physics, Astronomy, University, of Alabama, Tuscaloosa, AL 35487, USA) arXiv: 1904.09329 · 2019-05-15 ## TL;DR This study searched for pulsed very high-energy gamma-ray emission from 13 young pulsars using archival VERITAS data, setting upper limits and constraining potential VHE flux components. ## Contribution First-ever search for pulsed VHE gamma-ray emission from these pulsars, providing new upper limits and insights into their high-energy emission mechanisms. ## Key findings - No pulsed VHE gamma-ray emission detected from any pulsar. - Upper limits established on VHE flux above 100 GeV for all pulsars. - Constraints placed on models predicting VHE emission from young pulsars. ## Abstract We conduct a search for periodic emission in the very high-energy gamma-ray band (VHE; E > 100 GeV) from a total of 13 pulsars in an archival VERITAS data set with a total exposure of over 450 hours. The set of pulsars includes many of the brightest young gamma-ray pulsars visible in the Northern Hemisphere. The data analysis resulted in non-detections of pulsed VHE gamma rays from each pulsar. Upper limits on a potential VHE gamma-ray flux are derived at the 95% confidence level above three energy thresholds using two methods. These are the first such searches for pulsed VHE emission from each of the pulsars, and the obtained limits constrain a possible flux component manifesting at VHEs as is seen for the Crab pulsar. ## Full text _Full body text omitted from this summary view._ Fetch the complete paper as Markdown: https://tomesphere.com/paper/1904.09329/full.md ## Figures 73 figures with captions in the complete paper: https://tomesphere.com/paper/1904.09329/full.md ## References 66 references — full list in the complete paper: https://tomesphere.com/paper/1904.09329/full.md --- Source: https://tomesphere.com/paper/1904.09329