Results 91 to 100 of about 20,646,849 (184)

The High Energy X-ray Probe (HEX-P): probing accretion onto stellar mass black holes

Frontiers in Astronomy and Space Sciences
Accretion is a universal astrophysical process that plays a key role in cosmic history, from the epoch of reionization to galaxy and stellar formation and evolution. Accreting stellar-mass black holes in X-ray binaries are one of the best laboratories to
Riley M. T. Connors, John A. Tomsick, Paul Draghis, Benjamin Coughenour, Aarran W. Shaw, Javier A. García, Javier A. García, Dominic Walton, Kristin Madsen, Daniel Stern, Nicole Cavero Rodriguez, Thomas Dauser, Melania Del Santo, Jiachen Jiang, Henric Krawczynski, Honghui Liu, Joseph Neilsen, Michael Nowak, Sean Pike, Andrea Santangelo, Navin Sridhar, Navin Sridhar, Navin Sridhar, Andrew West, Jörn Wilms   +24 more
doaj   +1 more source

Investigation of scalar and fermion dark matter in mono-photon production at high-energy colliders

European Physical Journal C: Particles and Fields
Many theories about dark matter have emerged due to its strong theoretical appeal in explaining astrophysical phenomena. However, experimental and theoretical particle physics have yet not provided evidence that dark matter is part of the observable ...
G. Gil da Silveira, M. S. Mateus
doaj   +1 more source

Applications of CubeSats for Astrophysics Research Detection of Radio Frequency Counterparts of High Energy Phenomena with Very Long Baseline Interferometry

CubeSat systems have the potential to make significant contributions to multiple areas of astrophysics research, including detection of gravitational wave counterparts, Gamma Ray Bursts (GRBs) and GRB afterglow, X-ray and ultraviolet astrophysics, exoplanet studies, solar, ionospheric and space physics, and variable star astrophysics including pulsar ...
openaire   +1 more source

New Physics with PeV Astrophysical Neutrino Beams

Astrophysical neutrinos allow us to access energies and baselines that cannot be reached by human-made accelerators, offering unique probes of new physics phenomena. This thesis aims to address the challenges currently facing searches for Beyond Standard
Safa, Ibrahim
core  

A Targeted Gamma-Ray Search of Five Prominent Galaxy Merger Systems with 17 years of Fermi-LAT Data

The Open Journal of Astrophysics
Galaxy mergers are among the most energetic astrophysical phenomena, driving intense star formation and potentially fueling cosmic ray acceleration, which can produce high energy $\gamma$-ray emission through hadronic processes.
Siddhant Manna, Shantanu Desai
doaj   +1 more source

The Astrophysical Multimessenger Observatory Network (AMON) [PDF]

, 2013
We summarize the science opportunity, design elements, current and projected partner observatories, and anticipated science returns of the Astrophysical Multimessenger Observatory Network (AMON).
Coutu, S., Taboada, I., Smith. M. W. E., Meszaros, P., Barthelmy, S. D., Marka, S., Fixelle, J., Falcone, A. D., Owen, B. J., Fox, D. B., DeYoung, T., Gao, Shan, Sommers, P., Ashtekar, Abhay, Bartos, I., Babu, G. Jogesh, Tesic, G., Cowen, D. F., Hashemi, B., Homeier, A.   +19 more
core  

Charged particle bound orbits around magnetized Schwarzschild black holes: S2 star and hotspot applications

European Physical Journal C: Particles and Fields
The dynamics of charged particles around magnetized black holes provide valuable insights into astrophysical processes near compact objects. In this work, we investigate the bound and unbound trajectories of charged particles in the vicinity of a ...
Uktamjon Uktamov, Mohsen Fathi, Javlon Rayimbaev   +2 more
doaj   +1 more source

Epicyclic frequencies around charged regular black hole: constraints using different quasars data

European Physical Journal C: Particles and Fields
We examine the dynamics of test particles and epicyclic frequencies around a charged regular black hole, investigating how its mass M and charge q influence orbital motion, stability, and high-energy phenomena.
G. Mustafa, Faisal Javed, Sushant G. Ghosh, S. K. Maurya, Farruh Atamurotov   +4 more
doaj   +1 more source

Probing the statistical correlation of optical tidal disruption events with high-energy neutrinos

Astronomy & Astrophysics
High-energy (HE) neutrinos have been observed by the IceCube (IC) Neutrino Observatory for over a decade. Nevertheless, the astrophysical origin and the responsible mechanisms producing these HE neutrinos are still a mystery, with many astrophysical ...
Langis D. A., Liodakis I., Koljonen K. I. I., Kouch P. M.   +3 more
doaj   +1 more source

Overestimation of Astrophysical Gamma-Ray Energies during Thunderstorms: Synergy of Galactic and Atmospheric Accelerators

The Astrophysical Journal Letters
Particle accelerators abound in space plasmas, saturating the cosmos with fully stripped nuclei and gamma rays, with energies surpassing the capabilities of human-made accelerators by orders of magnitude. Upon reaching Earth’s atmosphere, these particles
A. Chilingarian, M. Zazyan
doaj   +1 more source