Results 51 to 60 of about 46,693 (203)
Advances in Astronomy, Volume 2026, Issue 1, 2026.We examine the weak cosmic censorship conjecture (WCCC) violation by throwing a charged and rotating test particle into a Kerr–Newman–modified gravity black hole (KN–MOG BH). The result depends on several factors, such as the relative sign of the particle’s charge and its direction of rotation with respect to black hole (BH).
Waqar Ahmad +2 more
wiley +1 more source
Cosmological Neutrino Signatures for Grand Unification Scale Physics [PDF]
, 1996 Physics beyond the standard model might imply the cosmological production of particles with grand unification scale energies. Nucleons and gamma-rays from such processes are candidates for the cosmic rays observed beyond 100 EeV [10**(20) eV].
Coppi, Paolo +3 more
core +2 more sources
Spectral Analysis of Flickering Gamma‐Ray Flashes Observed During the ALOFT 2023 Campaign
Journal of Geophysical Research: Atmospheres, Volume 130, Issue 23, 16 December 2025.Abstract We examine a newly discovered category of high‐energy radiation events called flickering gamma‐ray flashes (FGF) detected during the airborne lightning observatory for FEGS and TGFs campaign in July 2023. These FGFs are characterized by highly pulsating gamma‐ray emissions that have no detectable concurrent optical or radio signals (Ostgaard ...
D. Sarria +9 more
wiley +1 more source
High energy neutrino astronomy [PDF]
Nuclear Physics B - Proceedings Supplements, 1991 Invited talk at Int. Conf.
openaire +2 more sources
Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.Abstract On 9 October 2022, a powerful gamma ray burst (GRB), GRB221009A, caused significant changes in the electron density of the lower ionosphere, as evidenced by VLF (3–30 kHz) radio wave observations. However, GRB221009A did not yield any observable signatures at the Schumann resonances (∼8, ∼14 Hz), which are also sensitive to the lower ...
M. Gołkowski +8 more
wiley +1 more source
The Dawn of Multi-Messenger Astronomy
, 2016 The recent discoveries of high-energy astrophysical neutrinos and gravitational waves have opened new windows of exploration to the Universe. Combining neutrino observations with measurements of electromagnetic radiation and cosmic rays promises to ...
Santander, Marcos
core +1 more source
NEUTRINO ASTRONOMY WITH ICECUBE [PDF]
Modern Physics Letters A, 2009 IceCube is a kilometer-scale high energy neutrino telescope under construction at the South Pole, a second-generation instrument expanding the capabilities of the AMANDA telescope. The scientific portfolio of IceCube includes the detection of neutrinos from astrophysical objects such as the sources of the cosmic rays, the search for dark matter, and ...
openaire +2 more sources
Earth and Space Science, Volume 12, Issue 11, November 2025.Abstract This work examines atmospheric effects on cosmic ray counts observed by a Water‐Cherenkov detector at the Argentine Antarctic Marambio Station. We analyze the influence of ground‐level barometric pressure and geopotential height at various pressure levels on daily particle rates, finding the strongest association at 100 hPa, linked to ...
N. A. Santos +7 more
wiley +1 more source
Checking T and CPT violation with sterile neutrino
Nuclear Physics B, 2016 Post LSND results, sterile neutrinos have drawn attention and motivated the high energy physics, astronomy and cosmology to probe physics beyond the standard model considering minimal 3+1 (3 active and 1 sterile) to 3+N neutrino schemes.
Yogita Pant +3 more
doaj +1 more source
The Giant Radio Array for Neutrino Detection (GRAND) Project
SciPost Physics Proceedings, 2022 GRAND is designed to detect ultra-high-energy cosmic particles -- specially neutrinos, cosmic rays and gamma rays using radio antennas. With $\sim$20 mountainous sites around the world it will cover a total area of 200,000 km$^{2}$.
Bruno Lazarotto Lago
doaj +1 more source