Matches in SemOpenAlex for { <https://semopenalex.org/work/W4295300859> ?p ?o ?g. }
- W4295300859 endingPage "3226" @default.
- W4295300859 startingPage "3212" @default.
- W4295300859 abstract "We study the general-relativistic dynamics of matter being accreted onto and ejected by a magnetised and nonrotating neutron star. The dynamics is followed in the framework of fully general relativistic magnetohydrodynamics (GRMHD) within the ideal-MHD limit and in two spatial dimensions. More specifically, making use of the numerical code BHAC, we follow the evolution of a geometrically thick matter torus driven into accretion by the development of a magnetorotational instability. By making use of a number of simulations in which we vary the strength of the stellar dipolar magnetic field, we can determine self-consistently the location of the magnetospheric (or Alfv'en) radius $r_{rm msph}$ and study how it depends on the magnetic moment $mu$ and on the accretion rate. Overall, we recover the analytic Newtonian scaling relation, i.e. $r_{rm msph} propto B^{4/7}$, but also find that the dependence on the accretion rate is very weak. Furthermore, we find that the material torque correlates linearly with the mass-accretion rate, although both of them exhibit rapid fluctuations. Interestingly, the total torque fluctuates drastically in strong magnetic field simulations and these unsteady torques observed in the simulations could be associated with the spin fluctuations observed in X-ray pulsars." @default.
- W4295300859 created "2022-09-12" @default.
- W4295300859 creator A5034731703 @default.
- W4295300859 creator A5058246979 @default.
- W4295300859 creator A5074479477 @default.
- W4295300859 date "2022-09-09" @default.
- W4295300859 modified "2023-10-17" @default.
- W4295300859 title "GRMHD simulations of accreting neutron stars I: Non-rotating dipoles" @default.
- W4295300859 cites W1615681384 @default.
- W4295300859 cites W1657638373 @default.
- W4295300859 cites W1885275909 @default.
- W4295300859 cites W1912595871 @default.
- W4295300859 cites W1938091735 @default.
- W4295300859 cites W1963901897 @default.
- W4295300859 cites W1965443586 @default.
- W4295300859 cites W1968849872 @default.
- W4295300859 cites W1969992862 @default.
- W4295300859 cites W1970699897 @default.
- W4295300859 cites W1973013993 @default.
- W4295300859 cites W1974598716 @default.
- W4295300859 cites W1976710928 @default.
- W4295300859 cites W1980499787 @default.
- W4295300859 cites W1984506218 @default.
- W4295300859 cites W1988828220 @default.
- W4295300859 cites W1990386756 @default.
- W4295300859 cites W1991416545 @default.
- W4295300859 cites W2005218027 @default.
- W4295300859 cites W2010718753 @default.
- W4295300859 cites W2013079526 @default.
- W4295300859 cites W2013138379 @default.
- W4295300859 cites W2018335595 @default.
- W4295300859 cites W2022482741 @default.
- W4295300859 cites W2026679688 @default.
- W4295300859 cites W2028431545 @default.
- W4295300859 cites W2029251963 @default.
- W4295300859 cites W2037122059 @default.
- W4295300859 cites W2039049765 @default.
- W4295300859 cites W2040314293 @default.
- W4295300859 cites W2040348056 @default.
- W4295300859 cites W2040470093 @default.
- W4295300859 cites W2040784656 @default.
- W4295300859 cites W2047240402 @default.
- W4295300859 cites W2048301265 @default.
- W4295300859 cites W2049013365 @default.
- W4295300859 cites W2050691771 @default.
- W4295300859 cites W2063340729 @default.
- W4295300859 cites W2067426180 @default.
- W4295300859 cites W2067773300 @default.
- W4295300859 cites W2069322629 @default.
- W4295300859 cites W2079355094 @default.
- W4295300859 cites W2081058021 @default.
- W4295300859 cites W2087993597 @default.
- W4295300859 cites W2092164081 @default.
- W4295300859 cites W2107293238 @default.
- W4295300859 cites W2138715692 @default.
- W4295300859 cites W2167902545 @default.
- W4295300859 cites W2182821271 @default.
- W4295300859 cites W2762340391 @default.
- W4295300859 cites W2765143897 @default.
- W4295300859 cites W2772516477 @default.
- W4295300859 cites W2780056261 @default.
- W4295300859 cites W2810044577 @default.
- W4295300859 cites W2937696600 @default.
- W4295300859 cites W2963115250 @default.
- W4295300859 cites W2963352333 @default.
- W4295300859 cites W2972773304 @default.
- W4295300859 cites W2979613264 @default.
- W4295300859 cites W3005256061 @default.
- W4295300859 cites W3010703014 @default.
- W4295300859 cites W3015981736 @default.
- W4295300859 cites W3098071513 @default.
- W4295300859 cites W3099118445 @default.
- W4295300859 cites W3099199047 @default.
- W4295300859 cites W3099245437 @default.
- W4295300859 cites W3099776103 @default.
- W4295300859 cites W3099817771 @default.
- W4295300859 cites W3100396122 @default.
- W4295300859 cites W3101097082 @default.
- W4295300859 cites W3101317872 @default.
- W4295300859 cites W3101458732 @default.
- W4295300859 cites W3101955839 @default.
- W4295300859 cites W3104529554 @default.
- W4295300859 cites W3104539136 @default.
- W4295300859 cites W3106514957 @default.
- W4295300859 cites W3122609675 @default.
- W4295300859 cites W3196216018 @default.
- W4295300859 cites W4225814437 @default.
- W4295300859 cites W4226297761 @default.
- W4295300859 cites W4283782047 @default.
- W4295300859 cites W4299569975 @default.
- W4295300859 doi "https://doi.org/10.1093/mnras/stac2510" @default.
- W4295300859 hasPublicationYear "2022" @default.
- W4295300859 type Work @default.
- W4295300859 citedByCount "4" @default.
- W4295300859 countsByYear W42953008592023 @default.
- W4295300859 crossrefType "journal-article" @default.
- W4295300859 hasAuthorship W4295300859A5034731703 @default.
- W4295300859 hasAuthorship W4295300859A5058246979 @default.