Results 51 to 60 of about 425,495 (159)

Tleco: A Toolkit for Modeling Radiative Signatures from Relativistic Outflows

The Astrophysical Journal
A wide range of astrophysical sources exhibit extreme and rapidly varying electromagnetic emission indicative of efficient nonthermal particle acceleration.
Zachary Davis, Jesús M. Rueda-Becerril, Dimitrios Giannios   +2 more
doaj   +1 more source

Floor of Cosmogenic Neutrino Fluxes above 1017 eV

The Astrophysical Journal
The search for neutrinos with energies greater than 10 ^17 eV is being actively pursued. Although normalization of the dominant neutrino flux is highly uncertain, a floor level is guaranteed by the interactions of extragalactic cosmic rays with milky Way
Corinne Bérat, Antonio Condorelli, Olivier Deligny, François Montanet, Zoé Torrès   +4 more
doaj   +1 more source

Modeling the Multiwavelength Afterglow of Short Gamma-Ray Bursts with a Plateau Phase

The Astrophysical Journal
Short gamma-ray bursts (GRBs) exhibiting a plateau phase provide valuable insights into the postmerger activity of their central engines. Although the physical origin of the plateau remains uncertain, the magnetar energy injection model offers a ...
Chen Deng, Yong-Feng Huang, Abdusattar Kurban, Jin-Jun Geng, Fan Xu, Xiao-Fei Dong, Hao-Xuan Gao, En-Wei Liang, Liang Li   +8 more
doaj   +1 more source

New results from H.E.S.S. observations of galaxy clusters

, 2009
Clusters of galaxies are believed to contain a significant population of cosmic rays. From the radio and probably hard X-ray bands it is known that clusters are the spatially most extended emitters of non-thermal radiation in the Universe.
DALIBOR NEDBAL, JAMES A. HINTON, OLIVIER MARTINEAU-HUYNH, Völk H. J., WILFRIED DOMAINKO   +4 more
core   +3 more sources

Radiation processes around accreting black holes

, 2008
Accreting sources such as AGN, X-ray binaries or gamma-ray bursts are known to be strong, high energy emitters. The hard emission is though to originate from plasmas of thermal and/or non-thermal high energy particles.
Belmont, R., Malzac, J., Marcowith, A.
core   +1 more source

Signatures of Dark Radiation in Neutrino and Dark Matter Detectors

, 2017
We consider the generic possibility that the Universe's energy budget includes some form of relativistic or semi-relativistic dark radiation (DR) with non-gravitational interactions with Standard Model (SM) particles.
Cui, Yanou, Pospelov, Maxim, Pradler, Josef   +2 more
core   +1 more source

Magnetic White Dwarf–M Dwarf Binaries in Pre-mCV Phase as Special Population of Long-period Radio Transients

The Astrophysical Journal
Long-period radio transients (LPTs) are a new class of coherent radio sources with periods ranging from minutes to hours. Recently, two LPT sources, ILT J1101+5521 and GLEAM-X J0704–37, with periods of 2–3 hr have been confirmed to originate from white ...
Yuan-Pei Yang
doaj   +1 more source

A self-consistent hybrid Comptonization model for broad-band spectra of accreting supermassive black holes

, 2011
The nature of the broad-band spectra of supermassive accreting black holes in active galactic nuclei (AGNs) is still unknown. The hard X-ray spectra of Seyferts as well as of Galactic stellar-mass black holes (GBHs) are well represented by thermal ...
Alexandra Veledina, Belmont, Beloborodov, Beloborodov, Blumenthal, Brandt, Brandt, Burlon, Chiang, Chiang, Coppi, Coppi, Done, Frank, Galeev, George, Ghisellini, Ghisellini, Gierliński, Gilfanov, Gondek, González-Martín, González-Martín, Grove, Haardt, Haardt, Haardt, Heckman, Ho, Ibragimov, Indrek Vurm, Johnson, Juri Poutanen, Komossa, Lamer, Lubiński, Lubiński, Magdziarz, Mahadevan, Malzac, Malzac, Matt, McConnell, McHardy, Middleton, Middleton, Nandra, Nandra, Narayan, Nayakshin, Papadakis, Porquet, Pounds, Poutanen, Poutanen, Poutanen, Poutanen, Revnivtsev, Rybicki, Satyapal, Shakura, Shemmer, Shih, Sobolewska, Stern, Svensson, Svensson, Svensson, Vasudevan, Vasudevan, Vaughan, Vurm, Vurm, Wang, Wardziński, Wardziński, Yuan, Yuan, Zdziarski, Zdziarski, Zdziarski, Zdziarski, Zdziarski, Zdziarski, Zdziarski, Zdziarski, Zdziarski, Zhou, Zhou   +88 more
core   +1 more source

On Fast-radio-burst-associated X-Ray Bursts: Inverse Compton Scattering of Radio Photons by an Extreme Pair Flow During Magnetosphere Activities

The Astrophysical Journal
The Galactic fast radio burst (FRB) FRB 200428 was associated with a short X-ray burst (XRB) from the magnetar SGR J1935+2154 during one of its active phases.
Yue Wu, Yuan-Pei Yang, Fa-Yin Wang, Zi-Gao Dai   +3 more
doaj   +1 more source

Ruling out stray thermal radiation in analogue black holes

, 2014
Experimental searches for the thermal radiation from analogue black holes require the measurement of very low temperatures in regimes where other thermal noises may interfere or even mimic the sought-after effect.
Adesso, Gerardo, Doukas, Jason, Fuentes, Ivette   +2 more
core