Results 61 to 70 of about 44,470 (237)
Multi‐Source Forecast of Solar Cycle Flare Activity Using the Novel Informer‐Based Models
Space Weather, Volume 23, Issue 4, April 2025.Abstract Solar flares, the significant indicators of solar activity, have an impact on Earth's satellites and communication systems. Accurate prediction of solar flare events is crucial for mitigating these effects. In this work, we use multiple data sources, including Geostationary Operational Environmental Satellites soft X‐ray flare flux and the ...
Jie Cao +11 more
wiley +1 more source
The Astronomical JournalIn this study, we explore the characteristics of bulk flow across various redshift ranges within the frameworks of f ( R ) gravity, perturbed f ( R ) gravity, and perturbed f ( R ) gravity coupled with neutrinos.
Muhammad Yarahmadi, Amin Salehi
doaj +1 more source
Geophysical Research Letters, Volume 52, Issue 6, 28 March 2025.Abstract Terrestrial gamma‐ray flashes (TGFs) are short bursts of intense gamma radiation associated with lightning discharges. Although thousands of TGFs have been observed from space, TGFs detected at ground level, known as downward TGFs, are still very limited, and their relationship with lightning discharge processes remains elusive. Here we report
Ting Wu +8 more
wiley +1 more source
The status of neutrino astronomy [PDF]
Nuclear Physics B - Proceedings Supplements, 1995 The present status of experimental Neutrino Astronomy is discussed. Recent results both for low energy and high energy neutrino is presented.
openaire +2 more sources
Exploring Dark Photon Production and Kinetic Mixing Constraints in Heavy‐Ion Collisions
Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.ABSTRACT Vector U‐bosons, often referred to as “dark photons,” are potential candidates for mediating dark matter interactions. In this study, we outline a procedure to derive theoretical constraints on the upper bound of the kinetic mixing parameter ϵ2MU$$ {\upvarepsilon}^2\left({M}_U\right) $$ using dilepton data from heavy‐ion from SIS to RHIC ...
Adrian William Romero Jorge +3 more
wiley +1 more source
Neutrinos and Gamma Rays from Galaxy Clusters Constrained by the Upper Limits of IceCube
The Astrophysical JournalClusters of galaxies possess the capability to accelerate cosmic rays (CRs) to very high energy up to ∼10 ^18 eV due to their large size and magnetic field strength, which favor CR confinement for cosmological times.
Saqib Hussain +2 more
doaj +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
Dark Energy From the Gravitational Wave Background With Scalar Field Dark Matter
Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.ABSTRACT Recent observational results, such as those from pulsar timing arrays (PTA), suggest a low‐frequency Gravitational Wave Background (GWB) permeates our universe. This opens the possibility that gravitational waves could span a broader spectrum, potentially impacting cosmological scales.
Edwin L. Pérez‐Ochoa, Tonatiuh Matos
wiley +1 more source
Physics: Invest in neutrino astronomy [PDF]
Nature, 2016 Spencer Klein calls for bigger telescope arrays to catch particles from the most energetic places in the Universe.
openaire +3 more sources
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