Fallback accretion
WebMay 1, 2024 · Fallback accretion after a supernova explosion on to newborn neutron stars is expected on very general grounds (Colgate 1971; Zel'dovich, Ivanova & Nadezhin … WebRadio pulsar—magnetar—fallback accretion—magnetic field. 1. Introduction Sincethefirst(serendipitous)discoveryofaneutronstar as a radio pulsar (Hewish et al. 1968), some ∼3500 of them are now known with emissions detected across almost the entire electromagnetic spectrum (Manch-ester et al. 2005). Despite the wide variety of obser-
Fallback accretion
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WebWe have built quasi-equilibrium models for uniformly rotating quark stars in general relativity. The conformal flatness approximation is employed and the Compact Object CALculator (cocal) code is extended to treat rotating stars with surface density discontinuity. In addition to the widely used MIT bag model, we have considered a strangeon star equation of … WebAbstract The observed electromagnetic radiation from some long and short gamma-ray bursts,and neutron stars(NSs),and the theoretical models proposed to interpret these observations together point to a very interesting but confusing problem,namely,whether fall-back accretion could lead to dipole field decay of newborn NSs.In this paper,we ...
WebSystematic Investigation of the Fallback Accretion-powered Model for Hydrogen-poor Superluminous Supernovae. The energy liberated by fallback accretion has been … Webmodeled by fallback accretion of a tidally disrupted star. Its strong broad helium emission relative to hydrogen (HeIIλ4686/Hα>5) could be indicative of either the hydrogen-poor chemical composition of the disrupted star, or certain conditions in the tidal debris of a solar-composition star in the presence of an optically thick, extended
WebMar 21, 2007 · Fallback accretion in the aftermath of a compact binary merger DOI: Source arXiv Authors: Stephan Rosswog Request full-text Abstract Recent observations of long … WebJul 19, 2024 · Fallback Accretion-powered Supernova Light Curves Based on a Neutrino-driven Explosion Simulation of a 40 M ⊙ Star. Takashi J. Moriya 1, …
WebApr 10, 2024 · We investigate the fallback accretion with the -process heating by performing one-dimensional hydrodynamic simulations and developing a semi-analytical model. We show that the usual fallback rate is halted by the heating because pressure gradients accelerate ejecta beyond an escape velocity. chl henri laboritWebAccretion power may unbind the remaining infalling material, causing a sudden decrease in the brightness of some long duration Type II events. This scenario may be relevant for explaining some of the recently discovered classes of peculiar and rare supernovae. Publication: The Astrophysical Journal Pub Date: July 2013 DOI: chl hat creaseWebNov 18, 2024 · The fallback accretion rate would still be super-Eddington, as in the simulations presented herein, since the peak fallback accretion rate scales (approximately) only as the square root of the mass of the disrupted star (see Stone et al. 2013). chl hedis measureWebHere the results depend nearly linearly on the accretion rate and for the highest accretion rates, the neutrino luminosity is roughly 1052 ergs s−1. - "NEUTRINOS FROM FALLBACK ONTO NEWLY FORMED NEUTRON STARS" Fig. 10.— Neutrino Luminosity (left panel) and energy (right panel) versus time for electron, anti-electron and µ, τ neutrinos as a ... chl hearingWebApr 11, 2024 · The growth of the (apparent) horizon by accretion turns off PBHs evaporation and the escaping particles fall back into PBHs immediately. Thus, our calculations indicate that PBHs accretion put a serious constraint on the PBHs Hawking evaporation. In the end, we have investigated the effects of turning off the Hawking … grassroots hydroponicsWebDec 3, 2013 · Here, we present a detailed analysis on the fall back accretion process to explain the intense flare phase in the very early X-ray afterglow light curves. To reproduce the afterglow at late times, we resort to the external shock by engaging energy injections. grassroots hydroponics murrietaWebJan 7, 2024 · For the fallback accretion model, if the fallback accretion rate and fallback duration are large enough, the giant X-ray and optical bump with rapid rising and t … chl hockey fights