Results 21 to 30 of about 838,240 (250)

Broad absorption line quasars in the dark energy spectroscopic instrument early data release [PDF]

Monthly notices of the Royal Astronomical Society, 2023
Broad absorption line (BAL) quasars are characterized by gas clouds that absorb flux at the wavelength of common quasar spectral features, although blueshifted by velocities that can exceed 0.1c.
S. Filbert, P. Martini, K. Seebaluck, L. Ennesser, D. M. Alexander, A. Bault, A. Brodzeller, H. Herrera-Alcantar, P. Montero-Camacho, I. P'erez-Rafols, C. Ram'irez-P'erez, C. Ravoux, T. Tan, J. Aguilar, S. Ahlen, S. Bailey, D. Brooks, T. Claybaugh, K. Dawson, A. Macorra, P. Doel, K. Fanning, A. Font-Ribera, J. Forero-Romero, S. Gontcho, J. Guy, D. Kirkby, A. Kremin, C. Magneville, M. Manera, A. Meisner, R. Miquel, J. Moustakas, J. Nie, W. Percival, F. Prada, M. Rezaie, G. Rossi, E. Sanchez, M. Schubnell, H. Seo, G. Tarl'e, B. Weaver, Z. Z. D. O. Astronomy, The Ohio State University, Center for Cosmology, A. Physics, D. Physics, Astronomy, The University of Utah, C. F. Astronomy, D. University, Institute for Computational Cosmology, U. California, Irvine, D. D. F'isica, U. Guanajuato, Guanajuato, M'exico., D. O. Astronomy, Tsinghua University, Beijing, China., D. Astrof'isica, U. Barcelona, Barcelona, Spain, Institut de F'isica d'Altes Energies, T. Z. F. O. Science, Technology, A. Univ., Marseille, France, Irfu, Cea, Universit'e Paris-Saclay, Gif-sur-Yvette, Sorbonne Universit'e, Laboratoire de Physique Nucl'eaire et des Hautes Energies, París, Lawrence Livermore National Laboratory, Physics Dept., Boston University, U. London, I. D. F'isica, Universidad Nacional Aut'onoma de M'exico, Cd. de M'exico, Universidad de los Andes, Bogot'a, Colombia., Observatorio Astron'omico, D. D. F'isica, Serra H'unter, U. Barcelona, Bellaterra, NSF's NOIRlab, I. C. D. R. I. E. Avanccats, S. College, National Astronomical Observatories, Chinese Academy of Sciences, U. Waterloo, Waterloo, Canada, P. I. O. T. Physics, Waterloo Centre for Astrophysics, Inst. de Astrof'isica de Andaluc'ia, Granada, Kansas State University, Sejong University, Seoul., Korea, Ciemat, Madrid, U. Michigan, D. PhysicsAstronomy, O. University   +115 more
semanticscholar   +1 more source

Astroparticle physics with solar neutrinos. [PDF]

Proc Jpn Acad Ser B Phys Biol Sci, 2011
Solar neutrino experiments observed fluxes smaller than the expectations from the standard solar model. This discrepancy is known as the "solar neutrino problem". Flux measurements by Super-Kamiokande and SNO have demonstrated that the solar neutrino problem is due to neutrino oscillations.
Nakahata M.
europepmc   +5 more sources

Astroparticle physics: puzzles and discoveries [PDF]

Journal of Physics: Conference Series, 2008
Puzzles often give birth to the great discoveries, the false discoveries sometimes stimulate the exiting ideas in theoretical physics. The historical examples of both are described in Introduction and in section ``Cosmological Puzzles''. From existing puzzles most attention is given to Ultra High Energy Cosmic Ray (UHECR) puzzle and to cosmological ...
V. Berezinsky
openalex   +4 more sources

The Relationship of Lightning Radio Pulse Amplitudes and Source Altitudes as Observed by LOFAR. [PDF]

Earth Space Sci, 2022
Abstract When a lightning flash is propagating in the atmosphere it is known that especially the negative leaders emit a large number of very high frequency (VHF) radio pulses. It is thought that this is due to streamer activity at the tip of the growing negative leader.
Machado JGO, Hare BM, Scholten O, Buitink S, Corstanje A, Falcke H, Hörandel JR, Huege T, Krampah GK, Mitra P, Mulrey K, Nelles A, Pandya H, Rachen JP, Thoudam S, Trinh TNG, Ter Veen S, Winchen T.   +17 more
europepmc   +2 more sources

Searches for beyond-standard-model physics with astroparticle physics instruments [PDF]

Philosophical Transactions of the Royal Society A, 2023
Many instruments for astroparticle physics are primarily geared towards multi-messenger astrophysics, to study the origin of cosmic rays and to understand high-energy astrophysical processes.
M. Ackermann, K. Helbing
semanticscholar   +1 more source

Astroparticle Physics with the Forward Physics Facility at the High-Luminosity LHC [PDF]

International Conference on Rebooting Computing, 2023
High-energy collisions at the High-Luminosity Large Hadron Collider (HL-LHC) will produce an enormous flux of particles along the beam collision axis that is not accessible by existing LHC experiments.
D. Soldin
semanticscholar   +1 more source

Astro-Particle Physics at INFN

Universe, 2021
In Italy, INFN coordinates the research in the field of astro-particle physics. The supported experimental activities include the study of the cosmic radiation, the search of gravitational waves, the study of dark universe, general and quantum physics ...
Oliviero Cremonesi
doaj   +1 more source

THE SIZES OF THE X-RAY AND OPTICAL EMISSION REGIONS OF RXJ 1131–1231 [PDF]

Astrophysical Journal, 2009
We use gravitational microlensing of the four images of the z = 0.658 quasar RXJ 1131–1231 to measure the sizes of the optical and X-ray emission regions of the quasar.
X. Dai, C. Kochanek, G. Chartas, S. Kozłowski, C. Morgan, G. Garmire, E. D. O. Astronomy, U. Michigan, D. Astronomy, Center for Cosmology, A. Physics, T. O. S. University, Astrophysics, P. S. University, D. Physics, U. S. N. Academy, U. Washington   +16 more
semanticscholar   +1 more source

A Proposal for a Low‐Frequency Axion Search in the 1–2 μ$\umu$ eV Range and Below with the BabyIAXO Magnet

Annalen der Physik, Volume 535, Issue 12, December 2023., 2023
This article describes the implementation of low‐frequency axion haloscope setups inside the future BabyIAXO magnet. The RADES proposal has a potential sensitivity to the axion‐photon coupling down to values corresponding to the KSVZ model, in the mass range between 1 and 2 μ$\umu$eV.
Saiyd Ahyoune, Alejandro Álvarez Melcón, Sergio Arguedas Cuendis, Sergio Calatroni, Cristian Cogollos, Jack Devlin, Alejandro Díaz‐Morcillo, David Díez‐Ibáñez, Babette Döbrich, Javier Galindo, Juan Daniel Gallego, Jose María García‐Barceló, Benito Gimeno, Jessica Golm, Yikun Gu, Louis Herwig, Igor Garcia Irastorza, Antonio Jose Lozano‐Guerrero, Chloé Malbrunot, Jordi Miralda‐Escudé, Juan Monzó‐Cabrera, Pablo Navarro, Jose Ramón Navarro‐Madrid, Javier Redondo, José Reina‐Valero, Kristof Schmieden, Tim Schneemann, Marc Siodlaczek, Stefan Ulmer, Walter Wuensch   +29 more
wiley   +1 more source

e-Science Paradigm for Astroparticle Physics at KISTI [PDF]

Journal of Astronomy and Space Sciences, 2016
The Korea Institute of Science and Technology Information (KISTI) has been studying the e-Science paradigm. With its successful application to particle physics, we consider the application of the paradigm to astroparticle physics. The Standard Model of
Kihyeon Cho
doaj   +1 more source