Zobrazeno 1 - 10
of 594
pro vyhledávání: '"Aharonian , Felix"'
Autor:
Zhang, He-Shou, Ponti, Gabriele, Carretti, Ettore, Liu, Ruo-Yu, Morris, Mark R., Haverkorn, Marijke, Locatelli, Nicola, Zheng, Xueying, Aharonian, Felix, Zhang, Haiming, Zhang, Yi, Stel, Giovanni, Strong, Andrew, Yeung, Micheal, Merloni, Andrea
Publikováno v:
Nature Astronomy (2024)
Large-scale magnetic fields are observed off the midplanes of disk galaxies, indicating that they harbour magnetised halos. These halos are crucial to studies of galaxy evolution, galactic-scale outflows, and feedback from star formation activity. Id
Externí odkaz:
http://arxiv.org/abs/2408.06312
Publikováno v:
Nat Astron 8, 530-537 (2024)
Cosmic rays are energetic nuclei that permeate the entire Galactic disk. Their existence requires the presence of powerful particle accelerators. While Galactic supernova explosions may supply the required energy, there is growing evidence that they
Externí odkaz:
http://arxiv.org/abs/2407.07509
Publikováno v:
A&A 690, A142 (2024)
HESS J1702-420 is a peculiar TeV complex with a morphology changing from a diffuse (HESS J1702-420B source) at $\lesssim 2$ TeV to point-like (HESS J1702-420A) at $\gtrsim 10$ TeV energies. The morphology and the spectral properties of HESS J1702-420
Externí odkaz:
http://arxiv.org/abs/2405.20927
The brightest gamma ray burst (GRB) ever observed, GRB221009A, produced a surprisingly large flux of gamma rays with multi-TeV energies, which are expected to be absorbed in interactions with extragalactic background light (EBL). If the highest energ
Externí odkaz:
http://arxiv.org/abs/2405.05402
Autor:
Wilhelmi, Emma de Oña, López-Coto, Rubén, Aharonian, Felix, Amato, Elena, Cao, Zhen, Gabici, Stefano, Hinton, Jim
Ultrarelativistic particles called cosmic rays permeate the Milky Way, propagating through the Galactic turbulent magnetic fields. The mechanisms under which these particles increase their energy can be reasonably described by current theories of acc
Externí odkaz:
http://arxiv.org/abs/2404.16591
Autor:
Tsuji, Naomi, Tanaka, Takaaki, Safi-Harb, Samar, Aharonian, Felix, Casanova, Sabrina, Kothes, Roland, Moulin, Emmanuel, Uchida, Hiroyuki, Uchiyama, Yasunobu
HESS J1641-463 is an unidentified gamma-ray source with a hard TeV gamma-ray spectrum, and thus it has been proposed to be a possible candidate for cosmic ray (CR) accelerators up to PeV energies (a PeVatron candidate). The source spatially coincides
Externí odkaz:
http://arxiv.org/abs/2404.11012
De-excitation gamma-ray lines, produced by nuclei colliding with protons, provide information about astrophysical environments where particles have kinetic energies of $10-100$ MeV per nucleon. In general, such environments can be categorized into tw
Externí odkaz:
http://arxiv.org/abs/2309.05426
We explore the implications of the light curve of the early TeV gamma-ray afterglow of GRB221009A reported by the LHAASO collaboration. We show that the reported offset of the reference time, $T_*$, allows the determination of the relativistic jet ac
Externí odkaz:
http://arxiv.org/abs/2309.00673
HESS J1702-420 is a multi-TeV gamma-ray source with an unusual energy-dependent morphology. The recent H.E.S.S. observations suggest that the emission is well described by a combination of point-like HESS J1702-420A (dominating at highest energies, $
Externí odkaz:
http://arxiv.org/abs/2308.16685
Relativistic electrons are an essential component in many astrophysical sources, and their radiation may dominate the high-energy bands. Inverse Compton (IC) emission is the radiation mechanism that plays the most important role in these bands. The b
Externí odkaz:
http://arxiv.org/abs/2307.12467