Zobrazeno 1 - 10
of 196
pro vyhledávání: '"Gabici, Stefano"'
Autor:
Peron, Giada, Morlino, Giovanni, Gabici, Stefano, Amato, Elena, Purushothaman, Archana, Brusa, Marcella
Star clusters (SCs) are potential cosmic-ray (CR) accelerators and therefore are expected to emit high-energy radiation. However, a clear detection of gamma-ray emission from this source class has only been possible for a handful of cases. This could
Externí odkaz:
http://arxiv.org/abs/2408.04973
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
The $\mathrm{H}_2$ ionisation rate in the Central Molecular Zone, located in the Galactic Centre region, is estimated to be $\zeta\sim2\times10^{-14}~\mathrm{s}^{-1}$, based on observations of H$_3^+$ lines. This value is 2-3 orders of magnitude larg
Externí odkaz:
http://arxiv.org/abs/2406.15260
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:
de Séréville, Nicolas, Tatischeff, Vincent, Cristofari, Pierre, Gabici, Stefano, Diehl, Roland
The presence of live $^{60}$Fe nuclei (lifetime of 3.8~Myr) in cosmic rays detected by the ACE/CRIS instrument suggests a nearby nucleosynthesis source. $^{60}$Fe is primarily produced in core-collapse supernovae, and we aim to clarify whether the de
Externí odkaz:
http://arxiv.org/abs/2401.17660
Autor:
Recchia, Sarah, Gabici, Stefano
Recent measurements revealed the presence of several features in the cosmic ray spectrum. In particular, the proton and helium spectra exhibit a spectral hardening at $\approx$ 300 GV and a spectral steeping at $\approx$ 15 TV, followed by the well k
Externí odkaz:
http://arxiv.org/abs/2312.11397
Autor:
Reynolds, Stephen, An, Hongjun, Abdelmaguid, Moaz, Alford, Jason, Fryer, Chris L., Mori, Kaya, Nynka, Melania, Park, Jaegeun, Terada, Yukikatsu, Woo, Jooyun, Bamba, Aya, Bangale, Priyadarshini, Diesing, Rebecca, Eagle, Jordan, Gabici, Stefano, Gelfand, Joseph, Grefenstette, Brian, Garcia, Javier, Kim, Chanho, Kumar, Sajan, Mac Intyre, Brydyn, Madsen, Kristin, Manconi, Silvia, Motogami, Yugo, Ohsumi, Hayato, Olmi, Barbara, Sato, Toshiki, Shang, Ruo-Yu, Stern, Daniel, Tsuji, Naomi, Younes, George, Zoglauer, Andreas
HEX-P is a probe-class mission concept that will combine high spatial resolution X-ray imaging ($<10"$ full width at half maximum) and broad spectral coverage (0.2--80 keV) with an effective area far superior to current facilities (including XMM-Newt
Externí odkaz:
http://arxiv.org/abs/2311.04952
Autor:
Mori, Kaya, Reynolds, Stephen, An, Hongjun, Bamba, Aya, Krivonos, Roman, Tsuji, Naomi, Abdelmaguid, Moaz, Alford, Jason, Bangale, Priyadarshini, Celli, Silvia, Diesing, Rebecca, Eagle, Jordan, Fryer, Chris L., Gabici, Stefano, Gelfand, Joseph, Grefenstette, Brian, Garcia, Javier, Kim, Chanho, Kumar, Sajan, Kuznetsova, Ekaterina, Mac Intyre, Brydyn, Madsen, Kristin, Manconi, Silvia, Motogami, Yugo, Ohsumi, Hayato, Olmi, Barbara, Park, Jaegeun, Ponti, Gabriele, Sato, Toshiki, Shang, Ruo-Yu, Stern, Daniel, Terada, Yukikatsu, Woo, Jooyun, Younes, George, Zoglauer, Andreas
HEX-P is a probe-class mission concept that will combine high spatial resolution X-ray imaging (<10" FWHM) and broad spectral coverage (0.2-80 keV) with an effective area far superior to current facilities (including XMM-Newton and NuSTAR) to enable
Externí odkaz:
http://arxiv.org/abs/2311.04851
Autor:
Giuffrida, Roberta, Lemoine-Goumard, Marianne, Miceli, Marco, Gabici, Stefano, Fukui, Yasuo, Sano, Hidetoshi
Supernova remnants (SNRs) are the best candidates for galactic cosmic ray acceleration to relativistic energies via diffusive shock acceleration. The gamma-ray emission of SNRs can provide direct evidence of leptonic (inverse Compton and bremsstrahlu
Externí odkaz:
http://arxiv.org/abs/2308.14848
Autor:
Gabici, Stefano
Massive stars blow powerful winds and eventually explode as supernovae. By doing so, they inject energy and momentum in the circumstellar medium, which is pushed away from the star and piles up to form a dense and expanding shell of gas. The effect i
Externí odkaz:
http://arxiv.org/abs/2307.01596