Published July 30, 2012 | Version v1
Journal article Metadata-only

Constraints on the intergalactic magnetic field from gamma-ray observations of TeV blazars

Creators

  • 1. Institute for fysikk, NTNU, 7491 Trondheim (Norway)
  • 2. II. Institut für Theoretische Physik, Universität Hamburg (Germany)

Description

We discuss different approaches to infer the properties of the intergalactic magnetic field (IGMF) from gamma-ray observations of blazars. In particular, we investigate constraints on the IGMF strength and spacial distribution, resulting from studies of TeV blazars by imaging atmospheric Cherenkov telescopes and the Fermi-LAT instrument. We demonstrate that the non-observation of GeV gamma-rays from powerful TeV blazars indicates that more than 60% of space is filled by magnetic fields with stength ∼> 10−15 G, favoring the primordial IGMF origin.

Availability note (English)

Available from http://dx.doi.org/10.1088/1742-6596/375/1/052030

Additional details

Identifiers

DOI
10.1088/1742-6596/375/1/052030;

Publishing Information

Journal Title
Journal of Physics. Conference Series (Online)
Journal Volume
375
Journal Issue
5
Journal Page Range
[4 p.]
ISSN
1742-6596

Conference

Title
12. international conference on topics in astroparticle and underground physics
Acronym
TAUP 2011
Dates
5-9 Sep 2011
Place
Munich (Germany)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
43107672
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ASTROPHYSICS; CHERENKOV COUNTERS; COSMIC PHOTONS; COSMIC RAY DETECTION; GAMMA DETECTION; GAMMA RADIATION; GEV RANGE; INTERGALACTIC SPACE; MAGNETIC FIELDS; PARTICLE IDENTIFICATION; QUASARS; SPATIAL DISTRIBUTION; TELESCOPE COUNTERS; TEV RANGE
Descriptors DEC
BOSONS; COSMIC RADIATION; COSMIC RADIO SOURCES; DETECTION; DISTRIBUTION; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; ENERGY RANGE; IONIZING RADIATIONS; MASSLESS PARTICLES; MEASURING INSTRUMENTS; PHOTONS; PHYSICS; RADIATION DETECTION; RADIATION DETECTORS; RADIATIONS; SPACE