Zobrazeno 1 - 10
of 677
pro vyhledávání: '"P. Guidorzi"'
Autor:
Guidorzi, C., Maccary, R., Tsvetkova, A., Kobayashi, S., Amati, L., Bazzanini, L., Bulla, M., Camisasca, A. E., Ferro, L., Frederiks, D., Frontera, F., Lysenko, A., Maistrello, M., Ridnaia, A., Svinkin, D., Ulanov, M.
At the dawn of the gamma-ray burst (GRB) afterglow era, a Cepheid-like correlation was discovered between time variability V and isotropic-equivalent peak luminosity Liso of the prompt emission of about a dozen long GRBs with measured redshift availa
Externí odkaz:
http://arxiv.org/abs/2409.01644
Autor:
de Wet, Simon, Laskar, Tanmoy, Groot, Paul J., Duran, Rodolfo Barniol, Berger, Edo, Bhandari, Shivani, Eftekhari, Tarraneh, Guidorzi, C., Kobayashi, Shiho, Perley, Daniel A., Sari, Re'em, Schroeder, Genevieve
We present X-ray to radio frequency observations of the bright long gamma-ray burst GRB 210702A. Our ALMA 97.5 GHz observations show a significant rebrightening by a factor of ~2 beginning at 8.2 days post-burst and rising to peak brightness at 18.1
Externí odkaz:
http://arxiv.org/abs/2408.14641
Autor:
Maccary, R., Maistrello, M., Guidorzi, C., Sartori, M., Amati, L., Bazzanini, L., Bulla, M., Camisasca, A. E., Ferro, L., Frontera, F., Tsvetkova, A.
Context. The dissipation process responsible for the long gamma-ray burst (GRB) prompt emission and the kind of dynamics that drives the release of energy as a function of time are still key open issues. We recently found that the distribution of the
Externí odkaz:
http://arxiv.org/abs/2407.06002
Autor:
Bazzanini, Lorenzo, Ferro, Lisa, Guidorzi, Cristiano, Angora, Giuseppe, Amati, Lorenzo, Brescia, Massimo, Bulla, Mattia, Frontera, Filippo, Maccary, Romain, Maistrello, Manuele, Rosati, Piero, Tsvetkova, Anastasia
Publikováno v:
A&A 689, A266 (2024)
Context. The complexity and variety exhibited by the light curves of long gamma-ray bursts (GRBs) enclose a wealth of information that still awaits being fully deciphered. Despite the tremendous advance in the knowledge of the energetics, structure,
Externí odkaz:
http://arxiv.org/abs/2403.18754
Publikováno v:
A&A 684, L10 (2024)
Long gamma-ray burst (GRB) prompt emission shows a correlation between the intrinsic peak energy, $E_{\mathrm{p,i}}$, of the time-average $\nu F_{\nu}$ spectrum and the isotropic-equivalent peak gamma-ray luminosity, $L_{{\rm p,iso}}$, as well as the
Externí odkaz:
http://arxiv.org/abs/2403.11923
Autor:
Kann, D. A., White, N. E., Ghirlanda, G., Oates, S. R., Melandri, A., Jelinek, M., Postigo, A. de Ugarte, Levan, A. J., Martin-Carrillo, A., Paek, G. S. -H., Izzo, L., Blazek, M., Thone, C., Fernandez, J. F. Agui, Salvaterra, R., Tanvir, N. R., Chang, T. -C., O'Brien, P., Rossi, A., Perley, D. A., Im, M., Malesani, D. B., Antonelli, A., Covino, S., Choi, C., D'Avanzo, P., D'Elia, V., Dichiara, S., Fausey, H. M., Fugazza, D., Gomboc, A., Gorski, K. M., Granot, J., Guidorzi, C., Hanlon, L., Hartmann, D. H., Hudec, R., Jun, H. D., Kim, J., Kim, Y., Klose, S., Kluzniak, W., Kobayashi, S., Kouveliotou, C., Lidz, A., Marongiu, M., Martone, R., Meintjes, P., Mundell, C. G., Murphy, D., Nalewajko, K., Park, W. -K., Sz'ecsi, D., Smith, R. J., Stecklum, B., Steele, I. A., Strobl, J., Sung, H. -I, Updike, A., Urata, Y., van der Horst, A. J.
Publikováno v:
A&A 686, A56 (2024)
Gamma-ray bursts (GRBs) are ideal probes of the Universe at high redshift (z > 5), pinpointing the locations of the earliest star-forming galaxies and providing bright backlights that can be used to spectrally fingerprint the intergalactic medium and
Externí odkaz:
http://arxiv.org/abs/2403.00101
Autor:
Guidorzi, C., Sartori, M., Maccary, R., Tsvetkova, A., Amati, L., Bazzanini, L., Bulla, M., Camisasca, A. E., Ferro, L., Frontera, F., Li, C. K., Xiong, S. L., Zhang, S. N.
Publikováno v:
A&A 685, A34 (2024)
The variety of long duration gamma-ray burst (LGRB) light curves (LCs) encode a wealth of information on how LGRB engines release energy following the collapse of the progenitor star. Attempts to characterise GRB LCs focused on a number of properties
Externí odkaz:
http://arxiv.org/abs/2402.17282
Autor:
Maccary, R., Guidorzi, C., Amati, L., Bazzanini, L., Bulla, M., Camisasca, A. E., Ferro, L., Frontera, F., Tsvetkova, A.
Discovered more than 50 years ago, gamma-ray burst (GRB) prompt emission remains the most puzzling aspect of GRB physics. Its complex and irregular nature should reveal how newborn GRB engines release their energy. In this respect, the possibility th
Externí odkaz:
http://arxiv.org/abs/2401.14063
Double white-dwarf (DWD) mergers are relevant astrophysical sources expected to produce massive, highly-magnetized WDs, supernovae (SNe) Ia, and neutron stars (NSs). Although they are expected to be numerous sources in the sky, their detection has ev
Externí odkaz:
http://arxiv.org/abs/2310.06655
Autor:
Ferro, Lisa, Cavazzini, Leo, Moita, Miguel, Virgilli, Enrico, Frontera, Filippo, Amati, Lorenzo, Auricchio, Natalia, Campana, Riccardo, Caroli, Ezio, Guidorzi, Cristiano, Labanti, Claudio, Rosati, Piero, Stephen, John B.
Publikováno v:
Proc. SPIE 12576, EUV and X-ray Optics: Synergy between Laboratory and Space VIII, 1257603 (7 June 2023)
A new detection system for X-/Gamma-ray broad energy passband detectors for astronomy has been developed. This system is based on Silicon Drift Detectors (SDDs) coupled with scintillator bars; the SDDs act as a direct detector of soft (<30 keV) X-ray
Externí odkaz:
http://arxiv.org/abs/2309.11195