Published February 10, 2015 | Version v1
Journal article Metadata-only

A SEARCH FOR PULSATIONS FROM GEMINGA ABOVE 100 GeV WITH VERITAS

Creators

  • 1. Department of Physics and Astronomy, Barnard College, Columbia University, NY 10027 (United States)
  • 2. Physics Department, McGill University, Montreal, QC H3A 2T8 (Canada)
  • 3. Department of Physics, Washington University, St. Louis, MO 63130 (United States)
  • 4. Department of Physics and Astronomy, University of California, Los Angeles, CA 90095 (United States)
  • 5. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)
  • 6. Fred Lawrence Whipple Observatory, Harvard-Smithsonian Center for Astrophysics, Amado, AZ 85645 (United States)
  • 7. School of Physics, University College Dublin, Belfield, Dublin 4 (Ireland)
  • 8. Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439 (United States)
  • 9. Department of Physics and Astronomy, Iowa State University, Ames, IA 50011 (United States)
  • 10. Institute of Physics and Astronomy, University of Potsdam, D-14476 Potsdam-Golm (Germany)
  • 11. Astronomy Department, Adler Planetarium and Astronomy Museum, Chicago, IL 60605 (United States)
  • 12. School of Physics, National University of Ireland Galway, University Road, Galway (Ireland)
  • 13. Department of Physics and Astronomy, Purdue University, West Lafayette, IN 47907 (United States)
  • 14. School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455 (United States)

Description

We present the results of 71.6 hr of observations of the Geminga pulsar (PSR J0633+1746) with the VERITAS very-high-energy gamma-ray telescope array. Data taken with VERITAS between 2007 November and 2013 February were phase-folded using a Geminga pulsar timing solution derived from data recorded by the XMM- Newton and Fermi-LAT space telescopes. No significant pulsed emission above 100 GeV is observed, and we report upper limits at the 95% confidence level on the integral flux above 135 GeV (spectral analysis threshold) of 4.0 × 10–13 s–1 cm–2 and 1.7 × 10–13 s–1 cm–2 for the two principal peaks in the emission profile. These upper limits, placed in context with phase-resolved spectral energy distributions determined from 5 yr of data from the Fermi-Large Area Telescope (LAT), constrain possible hardening of the Geminga pulsar emission spectra above ∼50 GeV

Availability note (English)

Available from http://dx.doi.org/10.1088/0004-637X/800/1/61

Additional details

Identifiers

DOI
10.1088/0004-637X/800/1/61;

Publishing Information

Journal Title
Astrophysical Journal
Journal Volume
800
Journal Issue
1
Journal Page Range
[7 p.]
ISSN
0004-637X
CODEN
ASJOAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
46069548
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
COSMIC PHOTONS; EMISSION SPECTRA; ENERGY SPECTRA; GAMMA RADIATION; GEV RANGE; MATHEMATICAL SOLUTIONS; PHOTON EMISSION; PULSARS; PULSATIONS; SPACE; STARS; TELESCOPES
Descriptors DEC
BOSONS; COSMIC RADIATION; COSMIC RADIO SOURCES; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; EMISSION; ENERGY RANGE; IONIZING RADIATIONS; MASSLESS PARTICLES; PHOTONS; RADIATIONS; SPECTRA