VHE Gamma-ray supernova remnants

Funk, S.

doi:10.1016/j.asr.2007.04.076

Cited by 13 publications

(9 citation statements)

References 76 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hopefully the upcoming GLAST satellite will allow a clear distinction between hadronic and electronic γ-ray processes in these objects. With the expected sensitivity of the LAT instrument between 30 MeV and 300 GeV, GLAST observations of SNRs should differentiate between pion-decay and IC spectra [49].…”

Section: Pos(supernova)028mentioning

confidence: 99%

Cosmic-ray acceleration in supernova remnants

Tatischeff¹

2008

Proceedings of Supernovae: Lights in the Darkness — PoS(SUPERNOVA)

View full text Add to dashboard Cite

Galactic cosmic rays are widely believed to be accelerated in expanding shock waves initiated by supernova explosions. The theory of diffusive shock acceleration of cosmic rays is now well established, but two fundamental questions remain partly unanswered: what is the acceleration efficiency, i.e. the fraction of the total supernova energy converted to cosmic-ray energy, and what is the maximum kinetic energy achieved by particles accelerated in supernova explosions? Recent observations of supernova remnants, in X-rays with the Chandra and XMM-Newton satellites and in very-high-energy γ rays with several ground-based atmospheric Cerenkov telescopes, have provided new pieces of information concerning these two questions. After a review of these observations and their current interpretations, I show that complementary information on the diffusive shock acceleration process can be obtained by studying the radio emission from extragalactic supernovae. As an illustration, a nonlinear model of diffusive shock acceleration is applied to the radio light curves of the supernova SN 1993J, which exploded in the nearby galaxy M81. The results of the model suggest that most of the Galactic cosmic rays may be accelerated during the early phase of interaction between the supernova ejecta and the wind lost from the progenitor star.

show abstract

Section: Pos(supernova)028mentioning

confidence: 99%

Cosmic-ray acceleration in supernova remnants

Tatischeff¹

2008

Proceedings of Supernovae: Lights in the Darkness — PoS(SUPERNOVA)

View full text Add to dashboard Cite

show abstract

“…The cosmic ray particles, at least up to about 10 15 eV, are considered of galactic origin and shock waves of expanding supernovae remnants are ideal candidates to supply the power for their acceleration. Evidences supporting this hypothesis have recently been reported by AGILE and Fermi, with the observation of gammas presumably coming from neutral pion emission from accelerated protons in the Supernova Remnant W44 [2,3] and SR IC 443 [4], by Cherenkov imaging telescopes [5] and in X-ray emissions from the borders of SRN [6]. The accelerated particles are injected into the interstellar space, where they remain about 10 7 years before escaping into the intergalactic space.…”

Section: Introductionmentioning

confidence: 84%

Multi messenger astronomy and CTA: TeV cosmic rays and electrons

Picozza

Boezio

2013

Astroparticle Physics

View full text Add to dashboard Cite

Cosmic rays are a sample of solar, galactic and extragalactic matter. Their origin and properties are one of the most intriguing question in modern astrophysics. The most energetic events and active objects in the Universe: supernovae explosion, pulsars, relativistic jets, active galactic nuclei, have been proposed as sources of cosmic rays although unambiguous evidences have still to be found. Electrons, while comprising ~1% of the cosmic radiation, have unique features providing important information regarding the origin and propagation of cosmic rays in the Galaxy that is not accessible from the study of the cosmic-ray nuclear components due to their differing energy-loss processes. In this paper we will analyse, discussing the experimental uncertainties and challenges, the most recent measurements on cosmic-ray nuclei and, in particular, electrons with energies from tens of GeV into the TeV region.Comment: 24 pages, 10 figure, to appear in Astroparticle Physics as a special issue on CT

show abstract

“…The gamma observation is aimed at the identification of different galactic sources (Greiner 2007) such as: diffused components (Strong 2007), supernova remnants (Funk 2008), pulsar wind nebulas (Aharonian et al 2006), gammaray binaries (Dubus 2008), molecular clouds (Aharonian et al 2008a), clusters of massive stars (Aharonian et al 2007). Also extra-galactic sources can be studied (Beilick 2007) such as: diffused components (Pavlidou et al 2008), active galactic nuclei (Aharonian et al 2008b) and gamma-ray bursts (Fan and Piran 2008).…”

Section: Studying Gamma and Electron Fluxes On The Moon Surfacementioning

confidence: 99%

A Moon-borne electromagnetic calorimeter

Battiston

Brunetti

Cervelli

et al. 2009

Astrophys Space Sci

View full text Add to dashboard Cite

We discuss an electromagnetic sampling calorimeter for the detection of very high energy gamma-rays on the Moon, which is based on the use of scintillating cylinders and plates imbedded in the lunar soil. The use of lunar soil as a calorimeter radiator reduces the weight of the material to be transported to the Moon and minimises environmental impact. Plastic scintillator bars inserted into the regolith about 1.5 m are the active elements of this instrument: at the surface, each bar is terminated by a plastic scintillator plate to veto high energy charge particles. The readout system for the scintillator bars and plates are based on recently developed single photon solid state detectors (Silicon Photomultiplier, SiPM), extremely compact, sturdy and sensitive devices suited for detecting small light pulses in a space experiment. The performance of a regolith-scintillator calorimeter is evaluated and the relevant parameters are optimised using a GEANT4 simulation.

show abstract

VHE Gamma-ray supernova remnants

Cited by 13 publications

References 76 publications

Cosmic-ray acceleration in supernova remnants

Cosmic-ray acceleration in supernova remnants

Multi messenger astronomy and CTA: TeV cosmic rays and electrons

A Moon-borne electromagnetic calorimeter

Contact Info

Product

Resources

About