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相关论文: Predicted rates of merging neutron stars in galaxi…

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The merging of two neutron stars (MNS) is thought to be the source of short gamma-ray bursts (SGRB) and gravitational wave transients, as well as the main production site of r-process elements like Eu. We have derived a new delay time…

高能天体物理现象 · 物理学 2019-04-17 Paolo Simonetti , Francesca Matteucci , Laura Greggio , Gabriele Cescutti

We quantify the stellar abundances of neutron-rich r-process nuclei in cosmological zoom-in simulations of a Milky Way-mass galaxy from the Feedback In Realistic Environments project. The galaxy is enriched with r-process elements by binary…

The cosmic evolution of the neutron star merger (NSM) rate can be deduced from the observed cosmic star formation rate. This allows to estimate the rate expected in the horizon of the gravitational wave detectors advanced Virgo and ad LIGO…

高能天体物理现象 · 物理学 2015-11-11 E. Vangioni , S. Goriely , F. Daigne , P. Francois , K. Belczynski

The first neutron star-neutron star merger was detected in by LIGO/Virgo in a galaxy in which the majority of star formation was taking place a long time ago (11 Gyr). LIGO/Virgo estimated that local cosmic NS-NS merger rate is 110-3840…

We perform a comparative analysis of nucleosynthesis yields from binary neutron star (BNS) mergers, black hole-neutron star (BHNS) mergers, and core-collapse supernovae (CCSNe) with the goal of determining which are the most dominant…

高能天体物理现象 · 物理学 2023-08-30 Nick Ekanger , Mukul Bhattacharya , Shunsaku Horiuchi

Of the seven known double neutron stars (DNS) with precisely measure masses in the Milky Way that will merge within a Hubble time, all but one has a mass ratio, $q$, close to unity. Recently, precise measurements of three post-Keplerian…

高能天体物理现象 · 物理学 2020-07-14 Jeff J. Andrews

To test whether the short GRB rates, redshift distribution and host galaxies are consistent with current theoretical predictions, we use avery large database of population synthesis calculations to examine BH-NS and NS-NS merger rates in…

天体物理学 · 物理学 2010-11-11 R. O'Shaughnessy , V. Kalogera , K. Belczynski

We present a detailed analysis of predicted galaxy-galaxy merger fractions and rates in the Millennium simulation and compare these with the most up to date observations of the same quantities up to z~3. We carry out our analysis by…

宇宙学与河外天体物理 · 物理学 2009-07-29 Serena Bertone , Christopher J. Conselice

We summarize our results on the Galactic merger rate of double neutron stars (DNS) in view of the recent discovery of PSR J0737-3039. We also present previously unpublished results for the 'global' probability distribution of merger rate…

天体物理学 · 物理学 2007-05-23 Chunglee Kim , Vassiliki Kalogera , Duncan R. Lorimer , Mia Ihm , Krzysztof Belczynski

We study kilonova emission from binary neutron star (BNS) mergers for the case that a remnant massive neutron star (MNS) forms and collapses to a black hole within $20$ ms after the onset of the merger (which we refer to as "a short-lived…

高能天体物理现象 · 物理学 2023-06-13 Kyohei Kawaguchi , Sho Fujibayashi , Nanae Domoto , Kenta Kiuchi , Masaru Shibata , Shinya Wanajo

Recently, the characterisation of binary systems of neutron stars has become central in various fields such as gravitational waves, gamma-ray bursts (GRBs), and the chemical evolution of galaxies. In this work, we explore possible…

星系天体物理 · 物理学 2023-05-03 L. Cavallo , L. Greggio

In this paper, we investigate the properties of binary neutron stars (BNSs) and their mergers by combining population synthesis models for binary stellar evolution (BSE) with cosmological galaxy formation and evolution models. We obtain…

星系天体物理 · 物理学 2021-10-20 Qingbo Chu , Shenghua Yu , Youjun Lu

Probing the origin of r-process elements in the universe represents a multi-disciplinary challenge. We review the observational evidence that probe the properties of r-process sites, and address them using galactic chemical evolution…

Galaxy mergers can change the rate at which stars are formed. We can trace when these changes occur in simulations of galaxy mergers. However, for observed galaxies we do not know how the star formation rate (SFR) evolves along the merger…

星系天体物理 · 物理学 2026-01-14 W. J. Pearson , L. Wang , V. Rodriguez-Gomez , B. Margalef-Bentabol , L. E. Suelves

The rate and location of Binary Neutron Star (BNS) mergers are determined by a combination of the star formation history and the Delay Time Distribution (DTD) function. In this paper, we couple the star formation rate histories (SFRHs) from…

高能天体物理现象 · 物理学 2021-03-31 Jonah C. Rose , Paul Torrey , K. H. Lee , I. Bartos

We have computed new estimates of the local rates of supernovae (SNe) adding the updated log of Evans' visual search to our SN search database. In this way, we have accumulated the largest SN statistics ever assembled for this purpose. The…

天体物理学 · 物理学 2008-11-26 E. Cappellaro , R. Evans , M. Turatto

The merging rate of double neutron stars (DNS) has a great impact on many astrophysical issues, including the interpretation of gravitational waves signals, of the short Gamma Ray Bursts (GRBs), and of the chemical properties of stars in…

高能天体物理现象 · 物理学 2020-11-04 Laura Greggio , Paolo Simonetti , Francesca Matteucci

We investigate the properties of the host galaxies of compact binary mergers across cosmic time, by means of population-synthesis simulations combined with galaxy catalogues from the EAGLE suite. We analyze the merger rate per galaxy of…

星系天体物理 · 物理学 2020-01-08 M. Celeste Artale , Michela Mapelli , Yann Bouffanais , Nicola Giacobbo , Mario Spera , Mario Pasquato

Galactic binary neutron stars (BNSs) are a unique laboratory to probe the evolution of BNSs and their progenitors. Here, we use a new version of the population synthesis code SEVN to evolve the population of Galactic BNSs, by modeling the…

The origin of half of the rapid neutron-capture nucleosynthesis (r-process) elements in the Universe remains an open question. Binary neutron star (BNS) mergers have been shown to face difficulties in reproducing the observed r-process…

高能天体物理现象 · 物理学 2026-05-21 Joon Young Lee , Hsin-Yu Chen , Muhammed Saleem
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