Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Damien Bégué"'
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 2, p 135 (2024)
The study of magnetically arrested disks (MAD) has attracted strong interest in recent years because these disk configurations were found to generate strong jets, as observed in many accreting systems. Here, we present the results of 14 general relat
Externí odkaz:
https://doaj.org/article/3cdb88173ed1401a9f8ef6adcf5ee39d
Publikováno v:
The Astrophysical Journal, Vol 956, Iss 1, p 12 (2023)
Observations of long-duration gamma-ray bursts (GRBs) with TeV emission during their afterglow have been on the rise. Recently, GRB 221009A, the most energetic GRB ever observed, was detected by the Large High Altitude Air Shower Observatory experime
Externí odkaz:
https://doaj.org/article/8b51b42a63694ef69307f43a53790606
Publikováno v:
The Astrophysical Journal, Vol 955, Iss 1, p 70 (2023)
We consider here a proton-synchrotron model to explain the MAGIC observation of GRB 190114C afterglow in the energy band of 0.2–1 TeV, while the X-ray spectra are explained by electron-synchrotron emission. Given the uncertainty of the particle acc
Externí odkaz:
https://doaj.org/article/c3c514f0fdfb463fa6efceab8bd3b6b9
Publikováno v:
Nuclear Physics B, Vol 940, Iss , Pp 312-320 (2019)
We compare supernovae and Baryon Acoustic Oscillations data to the predictions of a cosmological model of interacting dark matter and dark energy. This theoretical model can be derived from the effective field theory of Einstein–Cartan gravity with
Externí odkaz:
https://doaj.org/article/c853fcc469fd4039b0aec0e027f8fb65
Autor:
J. Michael Burgess, Jochen Greiner, Damien Bégué, Dimitrios Giannios, Francesco Berlato, Vladimir M. Lipunov
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 7 (2020)
The detection of a faint, short gamma-ray burst (GRB 170817A) in coincidence with the gravitational wave (GW 170817) detection by LIGO/Virgo is at odds with the expected known luminosity and redshift distribution of short GRBs (sGRB). Examining the o
Externí odkaz:
https://doaj.org/article/997d6e7d973c4a92aeef8149835b2bde
The composition of relativistic outflows producing gamma-ray bursts is a long-standing open question. One of the main arguments in favour of magnetically dominated outflows is the absence of photospheric component in their broad-band time-resolved sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1b2c5ab4f7bf3ff569337ec770c2762
Publikováno v:
Journal of Cosmology and Astroparticle Physics. 2022:034
Some afterglow light curves of gamma-ray bursts (GRBs) exhibit very complex temporal and spectral features, such as a sudden intensity jump about one hour after the prompt emission in the optical band. We assume that this feature is due to the late c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a181415214a481057d950ad88bb9ebc
https://doi.org/10.1088/1475-7516/2022/06/034
https://doi.org/10.1088/1475-7516/2022/06/034
The observation of a very-high-energy neutrino by IceCube (IceCube-170922A) and its association with the flaring blazar TXS 0506+056 provided the first multimessenger observations of blazar jets, demonstrating the important role of protons in their d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77da73c2ba1fcc21794ba2b842d3ab6e
Inspired by the confirmed detection of a short gamma-ray burst (GRB) in association with a gravitational wave signal, we present the first Bayesian Fermi-Gamma-ray Burst Monitor (GBM) short GRB spectral catalogue. Both peak flux and time-resolved spe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c4d4b242342ee0445695bd12368d80c
https://mediatum.ub.tum.de/1539730
https://mediatum.ub.tum.de/1539730
Gamma-ray bursts are the most energetic electromagnetic sources in the Universe. Their prompt gamma-ray radiation corresponds to an energy release of 1E42-1E47J. Fifty years after their discovery and several dedicated space-based instruments, the phy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::564820a902aebaddc981a24f9d37d9a1
http://arxiv.org/abs/1810.06965
http://arxiv.org/abs/1810.06965