Conveners
TeV-PeV gamma rays
- Martin Tluczykont ()
TeV-PeV gamma rays
- Martin Tluczykont ()
Description
In frames of this section, it is planned to discuss the gamma astronomy: methods, detectors of high energy gamma-rays and results of their investigations.
The origin，acceleration and transport mechanisms of the cosmic rays are fundamental but yet unresolved problems that have been the focus of astroparticle physics researches. The Large High Altitude Air Shower Observatory (LHAASO), which will be completed by the end of 2021, is a new generation hybrid experiment with the advantages of high sensitivity, high duty cycle and large field of view....
Abstract. The Carpet-3 experiment for investigation of gamma-radiation with energy above 100 TeV is currently being prepared at the Baksan Neutrino Observatory of the Institute for Nuclear Research, Russian Academy of Sciences. At present the plastic scintillation counters with a total continuous area of 410 m2 are installed in the muon detector (MD) underground tunnel, and they are totally...
Diffusive shock acceleration and production of non-thermal emission in galactic supernova remnants is briefly reviewed. We describe gamma ray and X-ray observational features of young and old remnants. The corresponding discussion of Galactic cosmic ray origin is given.
Supernova remnants are established sources of gamma-ray emission, detected from space and from ground. To establish this source class as accelerators of the bulk of Galactic cosmic rays has nevertheless proven to be challenging. I will review the observational status of ground-based observations and discuss their implications.
I will give a short overview of high energy diffuse gamma-ray emission measured by the Fermi LAT and H.E.S.S. experiments. The talk will consist of two parts. In the first part I will talk about the diffuse emission itself, what it can teach us about Galactic cosmic rays (CRs), the search for sources of PeV CRs, populations of faint Galactic and extragalactic sources. In the second part I will...
TAIGA (Tunka Advanced Instrument for Gamma-ray and cosmic ray Astrophysics) aims at covering the TeV to PeV energy range, where the long-sought Pevatrons can be detected. To this end, TAIGA is implementing a hybrid detection technique for Extensive Air Showers (EAS) from the TeV to PeV energy range with good spectral resolution. Currently the hybrid TAIGA detector combines two wide angle...
A wide-angle Cerenkov array TAIGA-HiSCORE (FOV ~0.6 ster), was originally created as a part of TAIGA installation for high -energy gamma-ray astronomy and cosmic ray physics. Array now consist on nearly 100 optical stations on the area of 1 km$^2$. Due to high accuracy and stability (~1 ns) of time synchronization of the optical stations the accuracy of EAS arrival direction reconstruction...
Future space-based GAMMA-400 gamma-ray telescope will operate aboard Russian astrophysical observatory in the highly elliptic orbit during 7 years. Observing gamma-ray sources from Galactic plane, gamma-ray bursts, emission from diffuse gamma rays, the Sun, dark matter particles will be performed uninterruptedly for a long time (~100 days) in point-source mode in contrast to scanning mode for...
Axion-like particles (ALPs) are a generic prediction of many extensions of the
Standard Model. They are very light pseudo-scalar bosons which mainly couple
to two photons. In the presence of an external field, photon-ALP oscillations
take place. They play a leading role in very-high-energy (VHE) astrophysics.
The aim of my talk is to report on two hints at ALPs. One comes from the fact...
The Baksan Neutrino Observatory setups are currently performing search for neutrino and ultra-high-energy gamma ray counterparts of gamma-ray bursts and neutrinos on the GCN/TAN. GCN/TAN (The Gamma-ray Coordinates Network, Transient Astronomy Network) is a system for distributing alerts from gamma-ray bursts, transients. Muon neutrinos and antineutrinos with energies above 1 GeV are...
Full-particle Monte-Carlo simulations of extensive air showers (EASs)
induced by 0.3-30 TeV cosmic gamma-rays and cosmic ray protons
as well as of Cherenkov radiation generated by such showers have
been carried out. Further modeling of Cherenkov photon transport in the
optical system and camera of a ~10 m(2) mirror area imaging Cherenkov telescope
based of modern OnSemi/MicroFJ silicon...
Since its first detection by the IceCube Neutrino Observatory in 2013, the diffuse flux of astrophysical neutrinos has been confirmed in several channels with increasing significance and precision. With a decade of IceCube data, we have now gained a solid picture of the astrophysical neutrino flux from the TeV up to the PeV range. Another significant milestone was the announcement of the first...
