High Energy Processes in Pulsar Wind Nebulae
arXiv:astro-ph/0610307 · doi:10.1007/s10509-007-9396-9
Abstract
Young pulsars produce relativistic winds which interact with matter ejected during the supernova explosion and the surrounding interstellar gas. Particles are accelerated to very high energies somewhere in the pulsar winds or at the shocks produced in collisions of the winds with the surrounding medium. As a result of interactions of relativistic leptons with the magnetic field and low energy radiation (of synchrotron origin, thermal, or microwave background), the non-thermal radiation is produced with the lowest possible energies up to 100 TeV. The high energy (TeV) gamma-ray emission has been originally observed from the Crab Nebula and recently from several other objects. Recent observations by the HESS Cherenkov telescopes allow to study for the first time morphology of the sources of high energy emission, showing unexpected spectral features. They might be also interpreted as due to acceleration of hadrons. However, theory of particle acceleration in the PWNe and models for production of radiation are still at their early stage of development since it becomes clear that realistic modeling of these objects should include their time evolution and three-dimensional geometry. In this paper we concentrate on the attempts to create a model for the high energy processes inside the PWNe which includes existence not only relativistic leptons but also hadrons inside the nebula. Such model should also take into account evolution of the nebula in time. Possible high energy expectations based on such a model are discussed in the context of new observations.
9 pages, 1 figure, Proc. Multimessenger approach to high energy gamma-ray sources
References in corpus (40)
- Observations of the Crab Nebula with H.E.S.S
- The Evolution and Structure of Pulsar Wind Nebulae
- Discovery of Very-High-Energy Gamma-Rays from the Galactic Centre Ridge
- Reconnection in a striped pulsar wind
- Pulsar Wind Nebulae in Evolved Supernova Remnants
- The Crab Nebula and Pulsar between 500 GeV and 80 TeV: Observations with the HEGRA stereoscopic air Cherenkov telescopes
- Magnetars in the Metagalaxy: An Origin for Ultra High Energy Cosmic Rays in the Nearby Universe
- Drifting subpulses and inner acceleration regions in radio pulsars
- Ultra-High Energy Cosmic Rays from Young Neutron Star Winds
- Energy dependent gamma-ray morphology in the Pulsar wind nebula HESSJ1825-137
- An unidentified TeV source in the vicinity of Cygnus OB2
- Discovery of extended VHE gamma-ray emission from the asymmetric pulsar wind nebula in MSH 15-52 with H.E.S.S
- Potential Neutrino Signals from Galactic Gamma-Ray Sources
- Variations of the TeV energy spectrum at different flux levels of Mkn 421 observed with the HEGRA system of Cherenkov telescopes
- The distance to the Vela pulsar gauged with HST parallax oservations
- Very High Energy Gamma Rays from PSR1706-44
- Gamma rays and neutrinos from the Crab Nebula produced by pulsar accelerated nuclei
- Signatures of high energy protons in pulsar winds
- Discovery of the two wings of the Kookaburra complex in VHE gamma -rays with H.E.S.S
- Gamma-rays from the pulsar wind nebulae
- A possible association of the new VHE gamma-ray source HESS J1825--137 with the pulsar wind nebula G18.0--0.7
- Very High Energy Gamma Rays from the Vela Pulsar Direction
- Towards Resolving the Crab Problem: A Linear Accelerator?
- Mass Composition of Cosmic Rays in the Range 2 x 10^17 - 3 x 10^18 Measured with Haverah Park Array
- Gamma-rays and cosmic-rays from a pulsar in Cygnus OB2
- Contribution of nuclei accelerated by gamma-ray pulsars to cosmic rays in the Galaxy
- A Search for sub-TeV Gamma-rays from the Vela Pulsar Region with CANGAROO-III
- Gamma-Rays and Neutrinos from Very Young Supernova Remnants
- Cosmic Rays and the Monogem Supernova Remnant
- Cosmic rays from Galactic pulsars
- Neutrinos from Early-Phase, Pulsar-Driven Supernovae
- Very High-Energy Gamma-Ray Observations of PSR B1509-58 with the CANGAROO 3.8m Telescope
- Neutrino flux predictions for Galactic plerions
- Associations of Very High Energy Gamma-Ray Sources Discovered by H.E.S.S. with Pulsar Wind Nebulae
- TeV gamma rays from PSR 1706-44
- Production of neutrons, neutrinos and gamma-rays by a very fast pulsar in the Galactic Center region
- TeV Gamma-rays from the Northern Sky Pulsar Wind Nebulae
- Nucleonic gamma-ray production in Pulsar Wind Nebulae
- Search for TeV emission from the region around PSR B1706-44 with the H.E.S.S. experiment
- Contribution of a nearby Pulsar to Cosmic Rays observed at Earth
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- Chandra observation of the TeV source HESS J1834-087
- Associations of Very High Energy Gamma-Ray Sources Discovered by H.E.S.S. with Pulsar Wind Nebulae
- Ultrahigh-energy Gamma-Ray Radiation from the Crab Pulsar Wind Nebula
- TeV J2032+4130: a not-so-dark Accelerator?
- Nucleonic gamma-ray production in Pulsar Wind Nebulae
- Constraints on the steady and pulsed very high energy gamma-ray emission from observations of PSR B1951+32/CTB 80 with the MAGIC Telescope
- Observation of an extended VHE gamma-ray emission from MSH 15-52 with CANGAROO-III
- Pulsar Wind Nebulae and Cosmic Rays: A Bedtime Story
- Galactic Cosmic-Ray Induced Production of Lithium in the Small Magellanic Cloud