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Title: PREDICTIONS OF GAMMA-RAY EMISSION FROM GLOBULAR CLUSTER MILLISECOND PULSARS ABOVE 100 MeV

Abstract

The recent Fermi detection of the globular cluster (GC) 47 Tucanae highlighted the importance of modeling collective gamma-ray emission of millisecond pulsars (MSPs) in GCs. Steady flux from such populations is also expected in the very high energy domain covered by ground-based Cherenkov telescopes. We present pulsed curvature radiation (CR) as well as unpulsed inverse Compton (IC) calculations for an ensemble of MSPs in the GCs 47 Tucanae and Terzan 5. We demonstrate that the CR from these GCs should be easily detectable for Fermi, while constraints on the total number of MSPs and the nebular B-field may be derived using the IC flux components.

Authors:
 [1];  [2];  [3]
  1. Astrophysics Science Division, NASA/Goddard Space Flight Center, Greenbelt, MD 20771 (United States)
  2. Unit for Space Physics, North-West University, Potchefstroom Campus, Private Bag X6001, Potchefstroom 2520 (South Africa)
  3. Max-Planck-Institut fuer Kernphysik, P.O. Box 103938, D 69029 Heidelberg (Germany)
Publication Date:
OSTI Identifier:
21300750
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal (Online)
Additional Journal Information:
Journal Volume: 696; Journal Issue: 1; Other Information: DOI: 10.1088/0004-637X/696/1/L52; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1538-4357
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; FORECASTING; GAMMA RADIATION; PULSARS; SIMULATION; TELESCOPES

Citation Formats

Venter, C, De Jager, O C, and Clapson, A -C. PREDICTIONS OF GAMMA-RAY EMISSION FROM GLOBULAR CLUSTER MILLISECOND PULSARS ABOVE 100 MeV. United States: N. p., 2009. Web. doi:10.1088/0004-637X/696/1/L52; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA).
Venter, C, De Jager, O C, & Clapson, A -C. PREDICTIONS OF GAMMA-RAY EMISSION FROM GLOBULAR CLUSTER MILLISECOND PULSARS ABOVE 100 MeV. United States. doi:10.1088/0004-637X/696/1/L52; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA).
Venter, C, De Jager, O C, and Clapson, A -C. Fri . "PREDICTIONS OF GAMMA-RAY EMISSION FROM GLOBULAR CLUSTER MILLISECOND PULSARS ABOVE 100 MeV". United States. doi:10.1088/0004-637X/696/1/L52; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA).
@article{osti_21300750,
title = {PREDICTIONS OF GAMMA-RAY EMISSION FROM GLOBULAR CLUSTER MILLISECOND PULSARS ABOVE 100 MeV},
author = {Venter, C and De Jager, O C and Clapson, A -C},
abstractNote = {The recent Fermi detection of the globular cluster (GC) 47 Tucanae highlighted the importance of modeling collective gamma-ray emission of millisecond pulsars (MSPs) in GCs. Steady flux from such populations is also expected in the very high energy domain covered by ground-based Cherenkov telescopes. We present pulsed curvature radiation (CR) as well as unpulsed inverse Compton (IC) calculations for an ensemble of MSPs in the GCs 47 Tucanae and Terzan 5. We demonstrate that the CR from these GCs should be easily detectable for Fermi, while constraints on the total number of MSPs and the nebular B-field may be derived using the IC flux components.},
doi = {10.1088/0004-637X/696/1/L52; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)},
journal = {Astrophysical Journal (Online)},
issn = {1538-4357},
number = 1,
volume = 696,
place = {United States},
year = {2009},
month = {5}
}