Repozitorij Univerze v Novi Gorici

Iskanje po repozitoriju
A+ | A- | Pomoč | SLO | ENG

Iskalni niz: išči po
išči po
išči po
išči po
* po starem in bolonjskem študiju

Opcije:
  Ponastavi


1 - 3 / 3
Na začetekNa prejšnjo stran1Na naslednjo stranNa konec
1.
Search for UHE neutrinos – in coincidence with LIGO GW150914 event – with the Pierre Auger Observatory
Lili Yang, 2016, objavljeni povzetek znanstvenega prispevka na konferenci

Opis: The first gravitational wave transient GW150914 was observed by Advanced LIGO on September 14th, 2015 at 09:50:45 Universal Time. In addition to follow-up electromagnetic observations, the detection of neutrinos will probe deeply and more on the nature of astrophysical sources, especially in the ultra-high energy regime. Neutrinos in the EeV energy range were searched in data collected at the surface detector of the Pierre Auger Observatory within ± 500 s and 1 day after the GW150914 event. No neutrino candidates were found. Based on this non-observation, we derive the first and only one neutrino fluence upper limit at EeV energies for this event at 90% CL, and report constraints on existence of accretion disk around mergers.
Najdeno v: ključnih besedah
Povzetek najdenega: ...gravitational waves, neutrinos, black hole physics...
Ključne besede: gravitational waves, neutrinos, black hole physics
Objavljeno: 06.12.2016; Ogledov: 2097; Prenosov: 0
.pdf Polno besedilo (627,39 KB)

2.
Search for Gamma-Ray Emission from Local Primordial Black Holes with the Fermi Large Area Telescope
Gabrijela Zaharijas, 2018, izvirni znanstveni članek

Najdeno v: ključnih besedah
Povzetek najdenega: ...astroparticle physics, black hole physics, methods: data analysis...
Ključne besede: astroparticle physics, black hole physics, methods: data analysis
Objavljeno: 23.08.2018; Ogledov: 984; Prenosov: 0
.pdf Polno besedilo (788,37 KB)

3.
On the GeV Emission of the Type I BdHN GRB 130427A
Laura Beccera, She Sheng Xue, Yu Wang, Narek Sahakyan, Mile Karlica, Yen-Chen Chen, Simonetta Filippi, Christian Cherubini, Carlo Luciano Bianco, Jorge Armando Rueda, Rahim Moradi, Remo Ruffini, 2019, izvirni znanstveni članek

Opis: We propose that the inner engine of a type I binary-driven hypernova (BdHN) is composed of Kerr black hole (BH) in a non-stationary state, embedded in a uniform magnetic field B_0 aligned with the BH rotation axis and surrounded by an ionized plasma of extremely low density of 10^−14 g cm−3. Using GRB 130427A as a prototype, we show that this inner engine acts in a sequence of elementary impulses. Electrons accelerate to ultrarelativistic energy near the BH horizon, propagating along the polar axis, θ = 0, where they can reach energies of ~10^18 eV, partially contributing to ultrahigh-energy cosmic rays. When propagating with $\theta \ne 0$ through the magnetic field B_0, they produce GeV and TeV radiation through synchroton emission. The mass of BH, M = 2.31M ⊙, its spin, α = 0.47, and the value of magnetic field B_0 = 3.48 × 10^10 G, are determined self consistently to fulfill the energetic and the transparency requirement. The repetition time of each elementary impulse of energy ${ \mathcal E }\sim {10}^{37}$ erg is ~10^−14 s at the beginning of the process, then slowly increases with time evolution. In principle, this "inner engine" can operate in a gamma-ray burst (GRB) for thousands of years. By scaling the BH mass and the magnetic field, the same inner engine can describe active galactic nuclei.
Najdeno v: ključnih besedah
Povzetek najdenega: ...binary-driven hypernova (BdHN) is composed of Kerr black hole (BH) in a non-stationary state, embedded... ...black hole physics, binaries, gamma-ray burst, neutron stars, supernovae, Astrophysics...
Ključne besede: black hole physics, binaries, gamma-ray burst, neutron stars, supernovae, Astrophysics - High Energy Astrophysical Phenomena
Objavljeno: 20.07.2020; Ogledov: 192; Prenosov: 0
.pdf Polno besedilo (1,09 MB)

Iskanje izvedeno v 0 sek.
Na vrh