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Title: Pulsar simulations for the Fermi Large Area Telescope

Abstract

Pulsars are among the prime targets for the Large Area Telescope (LAT) aboard the recently launched Fermi observatory. The LAT will study the gamma-ray Universe between 20 MeV and 300 GeV with unprecedented detail. Increasing numbers of gamma-ray pulsars are being firmly identified, yet their emission mechanisms are far from being understood. To better investigate and exploit the LAT capabilities for pulsar science, a set of new detailed pulsar simulation tools have been developed within the LAT collaboration. The structure of the pulsar simulator package ( PulsarSpectrum) is presented here. Starting from photon distributions in energy and phase obtained from theoretical calculations or phenomenological considerations, gamma-rays are generated and their arrival times at the spacecraft are determined by taking into account effects such as barycentric effects and timing noise. Pulsars in binary systems also can be simulated given orbital parameters. As a result, we present how simulations can be used for generating a realistic set of gamma-rays as observed by the LAT, focusing on some case studies that show the performance of the LAT for pulsar observations.

Authors:
 [1];  [2];  [1];  [1];  [1];  [3];  [4];  [5];  [4];  [1];  [1];  [2];  [1];  [1];  [1];  [1];  [2]
  1. Istituto Nazionale di Fisica Nucleare, Pisa (Italy)
  2. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
  3. Univ. of Washington, Seattle, WA (United States)
  4. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  5. Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
Contributing Org.:
Fermi LAT Collaboration
OSTI Identifier:
1357438
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Astroparticle Physics
Additional Journal Information:
Journal Volume: 32; Journal Issue: 1; Journal ID: ISSN 0927-6505
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; pulsars; gamma-ray pulsars; detectors; simulation

Citation Formats

Razzano, M., Harding, Alice K., Baldini, L., Bellazzini, R., Bregeon, J., Burnett, T., Chiang, J., Digel, S. W., Dubois, R., Kuss, M. W., Latronico, L., McEnery, J. E., Omodei, N., Pesce-Rollins, M., Sgrò, C., Spandre, G., and Thompson, D. J. Pulsar simulations for the Fermi Large Area Telescope. United States: N. p., 2009. Web. doi:10.1016/j.astropartphys.2009.04.008.
Razzano, M., Harding, Alice K., Baldini, L., Bellazzini, R., Bregeon, J., Burnett, T., Chiang, J., Digel, S. W., Dubois, R., Kuss, M. W., Latronico, L., McEnery, J. E., Omodei, N., Pesce-Rollins, M., Sgrò, C., Spandre, G., & Thompson, D. J. Pulsar simulations for the Fermi Large Area Telescope. United States. doi:10.1016/j.astropartphys.2009.04.008.
Razzano, M., Harding, Alice K., Baldini, L., Bellazzini, R., Bregeon, J., Burnett, T., Chiang, J., Digel, S. W., Dubois, R., Kuss, M. W., Latronico, L., McEnery, J. E., Omodei, N., Pesce-Rollins, M., Sgrò, C., Spandre, G., and Thompson, D. J. Thu . "Pulsar simulations for the Fermi Large Area Telescope". United States. doi:10.1016/j.astropartphys.2009.04.008. https://www.osti.gov/servlets/purl/1357438.
@article{osti_1357438,
title = {Pulsar simulations for the Fermi Large Area Telescope},
author = {Razzano, M. and Harding, Alice K. and Baldini, L. and Bellazzini, R. and Bregeon, J. and Burnett, T. and Chiang, J. and Digel, S. W. and Dubois, R. and Kuss, M. W. and Latronico, L. and McEnery, J. E. and Omodei, N. and Pesce-Rollins, M. and Sgrò, C. and Spandre, G. and Thompson, D. J.},
abstractNote = {Pulsars are among the prime targets for the Large Area Telescope (LAT) aboard the recently launched Fermi observatory. The LAT will study the gamma-ray Universe between 20 MeV and 300 GeV with unprecedented detail. Increasing numbers of gamma-ray pulsars are being firmly identified, yet their emission mechanisms are far from being understood. To better investigate and exploit the LAT capabilities for pulsar science, a set of new detailed pulsar simulation tools have been developed within the LAT collaboration. The structure of the pulsar simulator package (PulsarSpectrum) is presented here. Starting from photon distributions in energy and phase obtained from theoretical calculations or phenomenological considerations, gamma-rays are generated and their arrival times at the spacecraft are determined by taking into account effects such as barycentric effects and timing noise. Pulsars in binary systems also can be simulated given orbital parameters. As a result, we present how simulations can be used for generating a realistic set of gamma-rays as observed by the LAT, focusing on some case studies that show the performance of the LAT for pulsar observations.},
doi = {10.1016/j.astropartphys.2009.04.008},
journal = {Astroparticle Physics},
number = 1,
volume = 32,
place = {United States},
year = {2009},
month = {5}
}

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