Results 71 to 80 of about 125,059 (235)

Approximation of Daily AMS‐02 Spectra With Machine Learning Methods

Journal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 4, December 2025.
Abstract Almost three thousand daily AMS‐02 proton spectra from 2011 to 2019 offer the most precise and extensive data set of cosmic ray spectra covering a wide energy range. As such, they offer a unique opportunity to test machine learning algorithms for approximating cosmic ray proton spectra based on the inputs usually available to solar modulation ...
Martin Nguyen, Pavol Bobík, Ján Genči
wiley   +1 more source

SPIDERS: the spectroscopic follow-up of X-ray-selected clusters of galaxies in SDSS-IV [PDF]

, 2016
Alfred P. Sloan Foundation; US Department of Energy Office of Science; Center for High-Performance Computing at the University of Utah; Brazilian Participation Group; Carnegie Institution for Science; Carnegie Mellon University; Chilean Participation ...
N. Clerc, A. Merloni, Yu-ying Zhang, A. Finoguenov, T. Dwelly, K. Nandra, C. Collins, K. Dawson, J. Kneib, E. Rozo, E. Rykoff, T. Sadibekova, J. Brownstein, Yen-Ting Lin, J. Ridl, M. Salvato, A. Schwope, M. Steinmetz, H. Seo, J. Tinker   +19 more
semanticscholar   +1 more source

Relevance of Murchison Widefield Array Interplanetary Scintillation Observations to Heliospheric Transient Catalogs

Space Weather, Volume 23, Issue 12, December 2025.
Abstract We have conducted a comprehensive comparison of interplanetary scintillation (IPS) observations taken by the Murchison Widefield Array (MWA) with several heliospheric transient event catalogs, over a time period of 7 months during solar minimum.
A. Waszewski, J. S. Morgan, M. C. M. Cheung, R. Ekers, E. Samara, S. Majumdar, R. Chhetri, N. D. R. Bhat, M. Johnston‐Hollitt   +8 more
wiley   +1 more source

Antiprotons from dark matter annihilation in the Galaxy: Astrophysical uncertainties [PDF]

Physical Review D, 2012
The latest years have seen steady progresses in WIMP dark matter (DM) searches, with hints of possible signals suggested by both direct and indirect detection experiments. Antiprotons can play a key role validating those interpretations since they are copiously produced by WIMP annihilations in the Galactic halo, and the secondary antiproton background
Evoli C, Cholis I, Grasso D, Maccione L, Ullio, Piero   +4 more
openaire   +5 more sources

Climate Emergency and Different Ways to Fail? The Fermi Paradox, the Simulation Hypothesis, Agency and Hope

Journal for the Theory of Social Behaviour, Volume 55, Issue 4, December 2025.
ABSTRACT Humanity seems stuck on different ways to fail to meet the challenge posed by a declared climate emergency and manifest the problems of ecological breakdown. Rather than reprise these failures, we use the Fermi Paradox and simulation hypothesis to make a simple point about agency. The argument unfolds in two sections.
Jamie Morgan
wiley   +1 more source

Giant radio galaxies as probes of the ambient WHIM in the era of the SKA

, 2015
The missing baryons are usually thought to reside in galaxy filaments as warm-hot intergalactic medium (WHIM). From previous studies, giant radio galaxies are usually associated with galaxy groups, which normally trace the WHIM.
Chen, Ru-Rong, Peng, Bo, Strom, Richard
core   +1 more source

Astrophysical tests of modified gravity: the morphology and kinematics of dwarf galaxies [PDF]

Journal of Cosmology and Astroparticle Physics, 2013
This paper is the third in a series on tests of gravity using observations of stars and nearby dwarf galaxies. We carry out four distinct tests using published data on the kinematics and morphology of dwarf galaxies, motivated by the theoretical work of Hui et al. (2009) and Jain and Vanderplas (2011). In a wide class of gravity theories a scalar field
Vikram, Vinu, Cabre, Anna, Jain, Bhuvnesh, VanderPlas, Jake   +3 more
openaire   +2 more sources

Quantification of Perturbation to the Daytime Lower Ionosphere From a Gamma Ray Burst Using ELF Remote Sensing

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, Z. Nieckarz, J. Mlynarczyk, M. Ostrowski, J. Kubisz, A. Michalec, J. Lichtenberger, A. Klekociuk, P. Nicholson   +8 more
wiley   +1 more source

GASP XXIII: A Jellyfish Galaxy as an Astrophysical Laboratory of the Baryonic Cycle [PDF]

The Astrophysical Journal, 2019
Abstract With MUSE, Chandra, VLA, ALMA, and UVIT data from the GASP program, we study the multiphase baryonic components in a jellyfish galaxy (JW100) with a stellar mass 3.2 × 1011 M ⊙ hosting an active galactic nucleus (AGN).
Bianca M. Poggianti, Alessandro Ignesti, Myriam Gitti, Anna Wolter, Fabrizio Brighenti, Andrea Biviano, Koshy George, Benedetta Vulcani, Marco Gullieuszik, Alessia Moretti, Rosita Paladino, Daniela Bettoni, Andrea Franchetto, Yara L. Jaffé, Mario Radovich, Elke Roediger, Neven Tomičić, Stephanie Tonnesen, Callum Bellhouse, Jacopo Fritz, Alessandro Omizzolo   +20 more
openaire   +6 more sources

Atomistic Modeling of Methyl Formate and Glycolaldehyde Formation on Interstellar Dirty Ice Mantles via a “Radical + Ice” Mechanism

ChemPlusChem, Volume 90, Issue 11, November 10, 2025.
The presence of interstellar complex organic molecules (COMs) has been baffling astrochemists for a long time. Methyl formate and glycolaldehyde are widely detected but their abundances mismatch kinetic astrochemical model predictions. Here, the formation of these two COMs is characterized onto a mixed ice surface, highlighting the importance of ...
Jessica Perrero, Stefano Pantaleone, Piero Ugliengo, Albert Rimola   +3 more
wiley   +1 more source