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Showing 1 to 19 of 19 for “"core-collapse supernovae"”.
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Core-collapse supernovae in the great survey era
… A main science goal of LSST is to detect Type Ia supernovae, but the survey will also revolutionize our understanding of core-collapse events. LSST will observe ~ 10^5 core-collapse supernovae per year out to z ~ 1 and obtain the cosmic supernova rate by direct counting, in an unbiased way and …
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A one dimensional model of convection in iron core collapse supernovae
… exist within the newly formed neutron stars in core collapse supernovae, its role remains unclear. Much of the uncertainty concerning the role of convection may be attributed to the fact that the main tools for the investigation of convection in these supernovae are multi-dimensional codes. …
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Nuclear and particle interactions to multi-messenger signals: Core-collapse supernovae
… astronomy began when a massive star underwent core collapse in a neighboring dwarf galaxy, whose light and neutrinos reached Earth in 1987. Supernova 1987A was observed optically but was also observed through roughly two dozen neutrinos. Modern instruments have the ability to measure …
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Core-collapse supernovae: neutrino-dark matter phenomenology and probes of internal physics
… source to probe this interaction is core-collapse supernovae as they release ~3x10^53 erg in neutrinos for each transient. However, more observations that constrain the internal physics of core-collapse supernovae are needed in order to better understand their neutrino emission. This …
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Detection of core-collapse supernovae through joint analysis of LIGO gravitational wave and KamLAND neutrino data
Introduction: Core collapse supernova are one of the most intriguing astrophysical phenomena. The dying stage of a supergiant star, they occur when the star collapses into a protoneutron star, causing a shock wave and a gamma ray burst. High energy neutrinos are released in this process and offer …
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Stellar iron core collapse in {3+1} general relativity and the gravitational wave signature of core-collapse supernovae
… first ever calculations of rotating stellar iron core collapse in {3+1} general relativity that start out with presupernova models from stellar evolutionary calculations and include a microphysical finite-temperature nuclear equation of state, an approximate scheme for electron capture during …
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Very old and very young compact objects : X-ray studies of galactic globular clusters and recent core-collapse supernovae
… globular clusters and X-ray studies of recent core collapse supernovae. My analyses of the Chandra X-ray Observatory observations of the globular clusters NGC 6752 and NGC 6440 revealed as many low-luminosity X-ray sources as was in the entire census of globular cluster sources with the …
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The Science of Gravitational-Wave Sources and Beyond Compact Binary Coalescences
… from compact binary coalescences. Focusing on core-collapse supernovae as promising sources for short gravitational-wave transients, this work reports optically targeted searches for gravitational-wave emitted by core-collapse supernovae during the third observing run of the LIGO and Virgo …
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The core collapse supernova rate in the sdss-ii supernova survey
… for cosmology, also discovered a large sample of core collapse supernovae (CCSN). I use the SDSS-II SN data to measure the volumetric CCSN rate in the redshift range (0.03 < z < 0.09), finding a volume-averaged rate of 0.98±0.18 ×10⊃−4⊃h⊂70⊂⊃3⊃yr⊃−1⊃Mpc⊃−3⊃. The CCSN luminosity function is also …
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Detector Improvements and Optimization to Advance Gravitational-wave Astronomy
… I also explore the detection prospects of core-collapse supernovae with the third-generation facilities -- Cosmic Explorer and Einstein Telescope. I find that the weak gravitational-wave signature from core-collapse supernovae limits the likely sources within our galaxy. This corresponds to …
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Laboratory Experiments of High-Energy-Density Shocks in Magnetized Supersonic Plasma Flows
… jets from Young Stellar Objects, and shocks in core-collapse supernovae and supernova remnants. In this study, we mimic these extreme astrophysical environments using pulsed-power driven high-energy-density-plasma laboratory experiments, by generating hypersonic, magnetized large-Reynolds’ …
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Studying the background response of Minihalo for design optimizations
… neutrino detector. Detecting neutrinos from core-collapse supernovae through detectors like HALO-1kT accurately can provide invaluable information on the explosion mechanism of massive stars which is not fully understood. This is because neutrinos are emitted from the core of a dying star a …
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Digital Quantum Computing for Many-Body Simulations
… in extreme astrophysical settings such as core-collapse supernovae, neutron star mergers and the early universe. A detailed description of the physical phenomena and environments in which collective flavor oscillations occur is first reported, and the derivation of the Hamiltonian governing …
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Supernova shrapnel: nearby supernovae and dust transport in the ISM
… explosions, extending previous analyses of Core-Collapse Supernovae (CCSNe) to include Electron-Capture Supernovae (ECSNe), Super-Asymptotic Giant Branch (SAGBs) stars, Thermonuclear/Type Ia Supernovae (TNSNe), and Kilonovae/Neutron Star Mergers (KNe). We revisit previous estimates of the …
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Study of supernovae and massive stars and prospects with the 4m International Liquid Mirror Telescope
… energetic explosions in the Universe such as core-collapse supernovae (CCSNe) and gamma ray bursts. During their life time they follow various evolutionary phases (e.g. supergiant, luminous blue variable and Wolf-Rayet). They strongly influence their environments through their energetic …
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Isotopic and Elemental Compositions of Stardust and Protosolar Dust Grains in Primitive Meteorites
… large <super>18<super>O excesses and come from core collapse supernovae. The next most abundant fraction of grains comes from high metallicity AGB stars of approximately solar mass. A minor fraction of the grains exhibit large excesses in <super>16<super>O and formed in core collapse supernova …
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Bulk properties and physical characteristics of stripped-envelope supernovae
Stripped-envelope supernovae (SE-SNe) are a subset of core-collapse supernovae; the explosive death of a massive star. Their defining characteristic is the lack of promi- nent He and/or H envelope suggesting significant mass loss prior to explosion. Their progenitors may be high mass single stars …
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Procedure di modellizzazione rapide per la caratterizzazione di Supernovae Core Collapse e di transienti similari
Le Supernovae da Collasso Gravitazionale (Core Collapse Supernovae, CC-SNe) rappresentano la fase finale dell'evoluzione di stelle sufficientemente massive (M_{ZAMS} > 8-10 M_\odot). Questi eventi sono tra i fenomeni più energetici dell'Universo (con energie di esplosione tipiche dell'ordine di …