Results 11 to 20 of about 7,111 (156)

HIGH-ENERGY ASPECTS OF ASTROPHYSICAL JETS [PDF]

open access: yesInternational Journal of Modern Physics A, 2006
Various aspects of the high-energy emission from relativistic jets associated with compact astrophysical systems are reviewed. The main leptonic and hadronic processes responsible for the production of high-energy γ-rays, very-high-energy neutrinos and ultra-high energy cosmic rays are discussed.
openaire   +3 more sources

High Energy Astrophysics

open access: yesOyo Buturi, 1982
In view of the broad range of topics covered by Commission 48 and the consequent inevitable overlap with other commissions, it is not feasible to produce a comprehensive self-contained report. The commission therefore restricts its report to a selected list of accessible recent review articles and conference reports, where up-to-date summaries of ...
DOKE, Tadayoshi, MATSUOKA, Masaru
  +4 more sources

Soft scattering evaporation of dark matter subhalos by inner galactic gases

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
The large gap between a galactic dark matter subhalo’s velocity and its own gravitational binding velocity creates the situation that small subhalos can be evaporated before dark matter thermalize with baryons due to the low binding velocity.
Xiao-jun Bi   +4 more
doaj   +1 more source

Updates on the Hotspot and the Perseus-Pisces supercluster Excess Observed by the Telescope Array Experiment [PDF]

open access: yesEPJ Web of Conferences, 2023
The Telescope Array (TA) experiment, the largest observatory studying ultra-high energy cosmic rays in the northern hemisphere, has reported evidence for two medium-scale anisotropies.
Kim Jihyun   +4 more
doaj   +1 more source

Fermi-LAT Observation of PSR B1259-63 during Its 2021 Periastron Passage

open access: yesUniverse, 2021
PSR B1259-63 is a γ-ray binary system, where the compact object is a pulsar. The system has an orbital period of 1236.7 days and shows peculiar γ-ray flares (in 100 MeV–300 GeV) after its periastron time.
Zhi Chang   +5 more
doaj   +1 more source

DAMA/LIBRA-phase1 results and perspectives of the phase2

open access: yesEPJ Web of Conferences, 2015
The results obtained with the total exposure of 1.04 ton × yr collected by DAMA/LIBRA–phase1 deep underground at the Gran Sasso National Laboratory (LNGS) of the I.N.F.N. during 7 annual cycles are summarized.
Bernabei R.   +16 more
doaj   +2 more sources

Characteristics of the high-frequency humps in the black hole X-ray binary Swift J1727.8–1613

open access: yesAstronomy & Astrophysics
We present a detailed timing analysis of the two high-frequency humps observed in the power density spectrum of Swift J1727.8–1613 up to 100 keV, using data from the Hard X-ray Modulation Telescope (Insight-HXMT).
Li Ze-Xi   +15 more
doaj   +1 more source

Systematic study of the simultaneous events detected by GECAM

open access: yesAstronomy & Astrophysics
Gravitational-wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM) is a constellation of all-sky monitors in hard X-ray and gamma-ray bands, primarily observing high-energy transients such as gamma-ray bursts, soft gamma-ray repeaters ...
Ren Yang-Zhao   +47 more
doaj   +1 more source

Viscous attenuation of gravitational waves propagating through an inhomogeneous background

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
We consider the propagation of gravitational waves in the late-time Universe in the presence of matter distribution inhomogeneities, and we also consider the cosmic fluid to be viscous.
Shashank Shekhar Pandey   +3 more
doaj   +1 more source

GECAM discovery of a peculiar magnetar X-ray burst (MXB 221120) from SGR J1935+2154 associated with a fast radio burst

open access: yesAstronomy & Astrophysics
Fast radio bursts (FRBs) are enigmatic cosmic transients of millisecond duration observed in the radio band. The identification of FRB-associated magnetar X-ray bursts (MXBs) from the galactic magnetar SGR J1935+2154 suggests that at least a fraction of ...
Tan Wen-Jun   +52 more
doaj   +1 more source

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