Results 21 to 30 of about 91,576 (294)

First Magnetic Field Detection on a Class I Protostar [PDF]

, 2009
Strong stellar magnetic fields are believed to truncate the inner accretion disks around young stars, redirecting the accreting material to the high latitude regions of the stellar surface.
Covey, Kevin R., Doppmann, Greg W., Greene, Thomas P., Johns-Krull, Christopher M.   +3 more
core   +1 more source

Accretion‐powered Stellar Winds. III. Spin‐Equilibrium Solutions [PDF]

The Astrophysical Journal, 2008
We compare the stellar wind torque calculated in a previous work (Paper II) to the spin-up and spin-down torques expected to arise from the magnetic interaction between a slowly rotating ($\sim 10$% of breakup) pre-main-sequence star and its accretion disk.
Matt, Sean P., Pudritz, Ralph E.
openaire   +3 more sources

Simulations of Accretion Powered Supernovae in the Progenitors of Gamma Ray Bursts [PDF]

, 2012
Observational evidence suggests a link between long duration gamma ray bursts (LGRBs) and Type Ic supernovae. Here, we propose a potential mechanism for Type Ic supernovae in LGRB progenitors powered solely by accretion energy.
Arnett, Balbus, Beloborodov, Beloborodov, Binney, Bisnovatyi-Kogan, Bisnovatyi-Kogan, Bloom, Burrows, Calder, Chen, Chieffi, Chornock, Christodoulou, Christopher C. Lindner, Cobb, Dessart, Di Matteo, Fryer, Fryxell, Fujimoto, Galama, Garnavich, Hamuy, Heger, Hjorth, Igumenshchev, Igumenshchev, Igumenshchev, Joggerst, Kasen, Kawabata, Khokhlov, Kohri, Kuhfuß, Landau, Lazzati, Lazzati, Lee, Limongi, Lindner, López-Cámara, López-Cámara, MacFadyen, MacFadyen, Malesani, Marek, Matheson, Mazzali, Mazzali, McKinney, Mezzacappa, Milosavljević, Miloš Milosavljević, Mirabal, Modjaz, Morsony, Morsony, Murphy, Murphy, Nagakura, Nagakura, Nagataki, Nordhaus, Nousek, O'Brien, O'Connor, Paczyński, Pawan Kumar, Perna, Podsiadlowski, Popham, Pruet, Pruet, Raskin, Reichart, Rongfeng Shen, Seitenzahl, Sekiguchi, Shakura, Soderberg, Stanek, Surman, Thompson, Thompson, Timmes, Wheeler, Woosley, Young, Zhang, Zimmerman   +90 more
core   +2 more sources

Spectral variability of classical T Tauri stars accreting in an unstable regime [PDF]

, 2013
Classical T Tauri stars (CTTSs) are variable in different time-scales. One type of variability is possibly connected with the accretion of matter through the Rayleigh-Taylor instability that occurs at the interface between an accretion disc and a stellar
Kurosawa, Ryuichi, Romanova, Marina M.
core   +1 more source

MAGNETICALLY CONTROLLED ACCRETION FLOWS ONTO YOUNG STELLAR OBJECTS [PDF]

The Astrophysical Journal, 2011
(abridged) Accretion from disks onto young stars is thought to follow magnetic field lines from the inner disk edge to the stellar surface. The accretion flow thus depends on the geometry of the magnetic field. This paper extends previous work by constructing a collection of orthogonal coordinate systems, including the corresponding differential ...
Adams, Fred C., Gregory, Scott G.
openaire   +3 more sources

SPIN EVOLUTION OF ACCRETING YOUNG STARS. II. EFFECT OF ACCRETION-POWERED STELLAR WINDS [PDF]

The Astrophysical Journal, 2012
Accepted for publication in ApJ; 13 pages, 5 ...
P. Matt, Sean, Pinzón, Giovanni, P. Greene, Thomas, E. Pudritz, Ralph   +3 more
openaire   +3 more sources

The nature of very low luminosity objects (VeLLOs)

, 2016
The nature of very low luminosity objects with the internal luminosity ...
Dunham, Michael, Elbakyan, Vardan, Guedel, Manuel, Vorobyov, Eduard I.   +3 more
core   +1 more source

Low-Rate Accretion onto Isolated Stellar-Mass Black Holes [PDF]

Astronomy & Astrophysics, 2005
Magnetic field behaviour in a spherically-symmetric accretion flow for parameters typical of single black holes in the Galaxy is discussed. It is shown that in the majority of Galaxy volume, accretion onto single stellar-mass black holes will be spherical and have a low accretion rate ($10^{-6} - 10^{-9}$ of the Eddington rate).
Beskin, G. M., Karpov, S. V.
openaire   +3 more sources

Characterising the magnetospheric accretion process of DF Tauri’s primary

Astronomy & Astrophysics
Context. The accretion process in young stellar objects (YSOs) is fundamental to the formation of stellar systems. This process governs the star’s mass assembly, the transfer of angular momentum, and the shaping of the protoplanetary disc, thereby ...
Pouilly K., Audard M.
doaj   +1 more source

Observable Signatures of Classical T Tauri Stars Accreting in an Unstable Regime

EPJ Web of Conferences, 2014
We discuss key observational signatures of Classical T Tauri stars (CTTSs) accreting through Rayleigh-Taylor instability, which occurs at the interface between an accretion disk and a stellar magnetosphere.
Kurosawa Ryuichi, Romanova M. M.
doaj   +1 more source