Matches in SemOpenAlex for { <https://semopenalex.org/work/W2784598754> ?p ?o ?g. }
- W2784598754 endingPage "4" @default.
- W2784598754 startingPage "4" @default.
- W2784598754 abstract "We present the results of a global, three-dimensional magnetohydrodynamics simulation of an accretion disk with a rotating, weakly magnetized central star. The disk is threaded by a weak, large-scale poloidal magnetic field, and the central star has no strong stellar magnetosphere initially. Our simulation investigates the structure of the accretion flows from a turbulent accretion disk onto the star. The simulation reveals that fast accretion onto the star at high latitudes occurs even without a stellar magnetosphere. We find that the failed disk wind becomes the fast, high-latitude accretion as a result of angular momentum exchange mediated by magnetic fields well above the disk, where the Lorentz force that decelerates the rotational motion of gas can be comparable to the centrifugal force. Unlike the classical magnetospheric accretion scenario, fast accretion streams are not guided by magnetic fields of the stellar magnetosphere. Nevertheless, the accretion velocity reaches the free-fall velocity at the stellar surface due to the efficient angular momentum loss at a distant place from the star. This study provides a possible explanation why Herbig Ae/Be stars whose magnetic fields are generally not strong enough to form magnetospheres also show indications of fast accretion. A magnetically driven jet is not formed from the disk in our model. The differential rotation cannot generate sufficiently strong magnetic fields for the jet acceleration because the Parker instability interrupts the field amplification." @default.
- W2784598754 created "2018-02-02" @default.
- W2784598754 creator A5039960922 @default.
- W2784598754 creator A5043808659 @default.
- W2784598754 creator A5058524930 @default.
- W2784598754 creator A5087137394 @default.
- W2784598754 date "2018-04-06" @default.
- W2784598754 modified "2023-10-03" @default.
- W2784598754 title "A Three-dimensional Simulation of a Magnetized Accretion Disk: Fast Funnel Accretion onto a Weakly Magnetized Star" @default.
- W2784598754 cites W1578951559 @default.
- W2784598754 cites W1610918625 @default.
- W2784598754 cites W1942002525 @default.
- W2784598754 cites W1964842941 @default.
- W2784598754 cites W1970964877 @default.
- W2784598754 cites W1971863457 @default.
- W2784598754 cites W1976581883 @default.
- W2784598754 cites W1978391636 @default.
- W2784598754 cites W1980793813 @default.
- W2784598754 cites W1984142544 @default.
- W2784598754 cites W1984303403 @default.
- W2784598754 cites W1985646600 @default.
- W2784598754 cites W1985707679 @default.
- W2784598754 cites W1988828220 @default.
- W2784598754 cites W1997254846 @default.
- W2784598754 cites W1997286880 @default.
- W2784598754 cites W2005218027 @default.
- W2784598754 cites W2008019543 @default.
- W2784598754 cites W2009041681 @default.
- W2784598754 cites W2010195718 @default.
- W2784598754 cites W2010897480 @default.
- W2784598754 cites W2010928998 @default.
- W2784598754 cites W2011606526 @default.
- W2784598754 cites W2011892906 @default.
- W2784598754 cites W2012578543 @default.
- W2784598754 cites W2013079526 @default.
- W2784598754 cites W2014169735 @default.
- W2784598754 cites W2016480128 @default.
- W2784598754 cites W2016854238 @default.
- W2784598754 cites W2019779602 @default.
- W2784598754 cites W2023344645 @default.
- W2784598754 cites W2026679688 @default.
- W2784598754 cites W2029553946 @default.
- W2784598754 cites W2030435803 @default.
- W2784598754 cites W2040469410 @default.
- W2784598754 cites W2040470093 @default.
- W2784598754 cites W2048991039 @default.
- W2784598754 cites W2049013365 @default.
- W2784598754 cites W2049183090 @default.
- W2784598754 cites W2055069090 @default.
- W2784598754 cites W2055527420 @default.
- W2784598754 cites W2055793042 @default.
- W2784598754 cites W2059049415 @default.
- W2784598754 cites W2065500942 @default.
- W2784598754 cites W2066891664 @default.
- W2784598754 cites W2069889573 @default.
- W2784598754 cites W2070531397 @default.
- W2784598754 cites W2075076813 @default.
- W2784598754 cites W2082473009 @default.
- W2784598754 cites W2083748562 @default.
- W2784598754 cites W2087993597 @default.
- W2784598754 cites W2090671660 @default.
- W2784598754 cites W2100758318 @default.
- W2784598754 cites W2101439538 @default.
- W2784598754 cites W2104771241 @default.
- W2784598754 cites W2113255422 @default.
- W2784598754 cites W2116952160 @default.
- W2784598754 cites W2128738047 @default.
- W2784598754 cites W2137613498 @default.
- W2784598754 cites W2138715692 @default.
- W2784598754 cites W2139974701 @default.
- W2784598754 cites W2140347367 @default.
- W2784598754 cites W2140852606 @default.
- W2784598754 cites W2149520698 @default.
- W2784598754 cites W2156621121 @default.
- W2784598754 cites W2162551860 @default.
- W2784598754 cites W2164318739 @default.
- W2784598754 cites W2167436765 @default.
- W2784598754 cites W2221977688 @default.
- W2784598754 cites W2559227697 @default.
- W2784598754 cites W2560331516 @default.
- W2784598754 cites W2602067120 @default.
- W2784598754 cites W2772516477 @default.
- W2784598754 cites W2772568733 @default.
- W2784598754 cites W3098071513 @default.
- W2784598754 cites W3100379996 @default.
- W2784598754 cites W3100445182 @default.
- W2784598754 cites W3100653563 @default.
- W2784598754 cites W3101097082 @default.
- W2784598754 cites W3101337528 @default.
- W2784598754 cites W3101359137 @default.
- W2784598754 cites W3101881726 @default.
- W2784598754 cites W3102216071 @default.
- W2784598754 cites W3102627410 @default.
- W2784598754 cites W3103235503 @default.
- W2784598754 cites W3103380409 @default.
- W2784598754 cites W3103568094 @default.
- W2784598754 cites W3103607144 @default.
- W2784598754 cites W3103905150 @default.