High-energy gamma- and cosmic-ray observations with future space-based GAMMA-400 gamma-ray telescope
نویسندگان
چکیده
منابع مشابه
High Energy Gamma Rays from Ultrahigh Energy Cosmic Ray Protons in Gamma Ray Bursts
It has recently been proposed that ultrahigh energy (∼> 10 19 eV) cosmic rays (UHECRs) are accelerated by the blast waves associated with GRBs. We calculate the observed synchrotron spectrum from protons and energetic leptons formed in the cascades initiated by photopion production, taking into account γγ attenuation at the source. Normalizing to the emission characteristics of GRB 970508, we p...
متن کاملCosmic Gamma - Ray Bursts
1. Abstract GRBs have remained a puzzle for many high–energy astrophysicists since their discovery in 1967. With the advent of the X–ray satellites BeppoSAX and RossiXTE, it has been possible to carry out deep multi-wavelength observations of the counterparts associated with the GRBs just within a few hours of occurence, thanks to the observation of the fading X-ray emission that follows the mo...
متن کاملWhat Are Gamma-Ray Bursts? The Unique Role of Very High Energy Gamma-Ray Observations
Gamma-ray bursts (GRBs) have been an enigma since their discovery forty years ago. However, considerable progress unraveling their mysteries has been made in recent years. Developments in observations, theory, and instrumentation have prepared the way so that the next decade can be the one in which we finally answer the question, “What are gamma-ray bursts?” This question encompasses not only w...
متن کاملGamma Ray Bursts and the Fermi Gamma Ray Space Telescope : Notes to the La Plata Lectures
Gamma-ray bursts (GRBs) are a mixed class of sources consisting of, at least, the long duration and short-hard subclasses, the Xray flashes, and the low-luminosity GRBs. In all cases, the release of enormous amounts of energy on a short timescale makes an energetic, relativistic or mildly relativistic fireball that expands until it reaches a coasting Lorentz factor determined by the amount of b...
متن کاملCosmic Rays and High-Energy Neutrinos from Gamma-Ray Bursts
Several lines of evidence point to a relationship between gamma-ray bursts (GRBs) and the high mass stars that explode as supernovae. Arguments that GRB sources accelerate cosmic rays (CRs) are summarized. High-energy neutrino detection from individual GRBs would mean that they are hadronically dominated, that is, that the amount of energy deposited in the form of nonthermal hadrons in GRB blas...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: EPJ Web of Conferences
سال: 2019
ISSN: 2100-014X
DOI: 10.1051/epjconf/201920814004