Zobrazeno 1 - 10
of 127
pro vyhledávání: '"Stecker, Floyd"'
Autor:
Stecker, Floyd W.
This book chapter presents an overview of the historical experimental and theoretical developments in neutrino physics and astrophysics and also the physical properties of neutrinos, as well as the physical processes involving neutrinos. It also disc
Externí odkaz:
http://arxiv.org/abs/2301.02935
Autor:
Stecker, Floyd W.
Within the context of hot big-bang cosmology, a cosmic background of presently low energy neutrinos is predicted to exist in concert with the photons of the cosmic background radiation. The number density of the cosmological neutrinos is of the same
Externí odkaz:
http://arxiv.org/abs/2203.17223
Autor:
Murase, Kohta, Stecker, Floyd W.
Publikováno v:
World Scientific Series in Astrophysics: The Encyclopedia of Cosmology, pp.483-540 (2023)
Active Galactic Nuclei (AGN) are sources of high-energy gamma-rays and are considered to be promising candidates to be sources of high-energy cosmic rays and neutrinos as well. We present and discuss various models for ion acceleration and their inte
Externí odkaz:
http://arxiv.org/abs/2202.03381
Autor:
Stecker, Floyd W.
The search for a theory that unifies general relativity and quantum theory has focused attention on models of physics at the Planck scale. One possible consequence of models such as string theory may be that Lorentz invariance is not an exact symmetr
Externí odkaz:
http://arxiv.org/abs/2202.01183
Autor:
Orlando, Elena, Bottacini, Eugenio, Moiseev, Alexander, Bodaghee, Arash, Collmar, Werner, Ensslin, Torsten, Moskalenko, Igor V., Negro, Michela, Profumo, Stefano, Baring, Matthew G., Bolotnikov, Aleksey, Cannady, Nicholas, Carini, Gabriella A., Digel, Seth, Grenier, Isabelle A., Harding, Alice K., Hartmann, Dieter, Herrmann, Sven, Kerr, Matthew, Krivonos, Roman, Laurent, Philippe, Longo, Francesco, Morselli, Aldo, Sasaki, Makoto, Shawhan, Peter, Skinner, Gerry, Smith, Lucas D., Stecker, Floyd W., Strong, Andrew, Sturner, Steven, Thompson, David J., Tomsick, John A., Wadiasingh, Zorawar, Woolf, Richard S., Yates, Eric, Zoglauer, Andreas
The sky at MeV energies is currently poorly explored. Here we present an innovative mission concept that builds on and improves past and currently proposed missions at such energies. We outline the motivations for combining a coded mask and a Compton
Externí odkaz:
http://arxiv.org/abs/2112.07190
IceCube has observed an excess of neutrino events over expectations from the isotropic background from the direction of NGC 1068. The excess is inconsistent with background expectations at the level of $2.9\sigma$ after accounting for statistical tri
Externí odkaz:
http://arxiv.org/abs/2102.12409
Autor:
Coogan, Adam, Moiseev, Alexander, Morrison, Logan, Profumo, Stefano, Baring, Matthew G., Bolotnikov, Aleksey, Carini, Gabriella A., Herrmann, Sven C., Longo, Francesco, Stecker, Floyd W., Vigliano, Alessandro Armando, Woolf, Richard S.
Publikováno v:
Phys. Rev. D 107, 023022 (2023)
We outline the science opportunities in the areas of searches for dark matter and new physics offered by a proposed future MeV gamma-ray telescope, the Galactic Explorer with a Coded Aperture Mask Compton Telescope (GECCO). We point out that such an
Externí odkaz:
http://arxiv.org/abs/2101.10370
Publikováno v:
The Astrophysical Journal, 2021, 909, 52
Motivated by the discovery of the ultra-strong emission line starburst galaxies (EELGs) known as "green pea galaxies", we consider here their contribution to the intergalactic flux of ionizing UV at high redshifts. Most galaxies that have been observ
Externí odkaz:
http://arxiv.org/abs/2004.10644
Dark matter Annihilation in the Most Luminous and the Most Massive Ultracompact Dwarf Galaxies (UCD)
In this paper, we explore the potential astrophysical signatures of dark matter (DM) annihilations in ultra-compact dwarf galaxies (UCDs) considering two of the richest known galaxy clusters within 100 million light-years, nominally, Virgo and Fornax
Externí odkaz:
http://arxiv.org/abs/2003.02383
Here we investigate the possibility that some globular clusters (GCs) harbor intermediate mass black holes (BH) in their centers and are also embedded in a low-mass dark matter (DM) halo. Up to date, there is no evidence on whether or not GCs have DM
Externí odkaz:
http://arxiv.org/abs/1912.12262