Search for linear polarization in gamma-ray sources - possible evidence for the Vela pulsar
Journal Article
·
· Astrophys. J.; (United States)
The use of the azimuthal distribution of planes containing e(+)/e(-) pairs from high-energy photon materialization to investigate the nature of gamma-ray sources is discussed. Analytical work done on COS B data for bright COS B sources (Vela, Crab, and Geminga) and for a reference background region is presented along with results which are indicative of a low-chance-probability anisotropy effect for Vela. The case for the Vela pulsar is studied in more detail, starting from its pulsation properties and from a polarization interpretation of the observed anisotropy. A possible physical interpretation of the results is given in the context of pulsar gamma-ray emission, and requirements for future gamma-ray telescopes derived from COS B experience are examined. 29 references.
- Research Organization:
- CNR, Istituto di Fisica Cosmica, Milan (Italy)
- OSTI ID:
- 7129527
- Journal Information:
- Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 327; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANALYTICAL SOLUTION
ANISOTROPY
COSMIC GAMMA SOURCES
COSMIC RADIO SOURCES
COSMIC RAY SOURCES
ELECTROMAGNETIC RADIATION
GAMMA RADIATION
IONIZING RADIATIONS
MAGNETIC STARS
NEUTRON STARS
PHYSICAL PROPERTIES
POLARIZATION
PULSARS
PULSATIONS
RADIATIONS
STARS
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANALYTICAL SOLUTION
ANISOTROPY
COSMIC GAMMA SOURCES
COSMIC RADIO SOURCES
COSMIC RAY SOURCES
ELECTROMAGNETIC RADIATION
GAMMA RADIATION
IONIZING RADIATIONS
MAGNETIC STARS
NEUTRON STARS
PHYSICAL PROPERTIES
POLARIZATION
PULSARS
PULSATIONS
RADIATIONS
STARS