Results 11 to 20 of about 35,614 (300)

Three-Layered Atmospheric Structure in Accretion Disks Around Stellar-Mass Black Holes

Science, 2000
Modeling of the x-ray spectra of the Galactic superluminal jet sources GRS 1915+105 and GRO J1655-40 reveals a three-layered atmospheric structure in the inner region of their accretion disks. Above the cold and optically thick disk with a temperature of 0.2 to 0.5 kiloelectron volts, there is a warm layer with a temperature of 1.0 to 1.5 kiloelectron ...
Zhang, S. N., Cui, Wei, Chen, Wan, Yao, Yangsen, Zhang, Xiaoling, Sun, Xuejun, Wu, Xue-Bing, Xu, Haiguang   +7 more
openaire   +5 more sources

Axisymmetric MHD Simulations of Stellar Magnetosphere/Accretion Disk Interaction [PDF]

International Astronomical Union Colloquium, 1997
AbstractThe evolution of the inner disk region of magnetized accreting systems is studied by means of numerical simulations. Two different initial magnetic field topologies are studied: a pure dipole field which threads the disk continuously and a dipole field excluded from the disk by surface currents.
Kristen Miller, James Stone
openaire   +1 more source

The –M disk Relationship for Herbig Ae/Be Stars: A Lifetime Problem for Disks with Low Masses?

The Astronomical Journal, 2023
The accretion of material from protoplanetary disks onto their central stars is a fundamental process in the evolution of these systems and a key diagnostic in constraining the disk lifetime. We analyze the relationship between the stellar accretion rate
Sierra L. Grant, Lucas M. Stapper, Michiel R. Hogerheijde, Ewine F. van Dishoeck, Sean Brittain, Miguel Vioque   +5 more
doaj   +1 more source

Constraints from Dust Mass and Mass Accretion Rate Measurements on Angular Momentum Transport in Protoplanetary Disks [PDF]

, 2017
We investigate the relation between disk mass and mass accretion rate to constrain the mechanism of angular momentum transport in protoplanetary disks. Dust mass and mass accretion rate in Chamaeleon I are correlated with a slope close to linear, similar
Henning, Thomas, Herczeg, Gregory J., Lodato, Giuseppe, Manara, Carlo F., Mohanty, Subhanjoy, Mulders, Gijs D., Pascucci, Ilaria, Testi, Leonardo   +7 more
core   +2 more sources

Stellar Disk in the Galactic Center: A Remnant of a Dense Accretion Disk? [PDF]

The Astrophysical Journal, 2003
submitted to ApJ ...
Levin, Yuri, Beloborodov, Andrei M.
openaire   +2 more sources

Near-infrared Accretion Signatures from the Circumbinary Planetary-mass Companion Delorme 1 (AB)b

The Astrophysical Journal Letters, 2022
Accretion signatures from bound brown dwarf and protoplanetary companions provide evidence for ongoing planet formation, and accreting substellar objects have enabled new avenues to study the astrophysical mechanisms controlling the formation and ...
S. K. Betti, K. B. Follette, K. Ward-Duong, Y. Aoyama, G.-D. Marleau, J. Bary, C. Robinson, M. Janson, W. Balmer, G. Chauvin, P. Palma-Bifani   +10 more
doaj   +1 more source

Nature Of Transition Circumstellar Disks. I. The Ophiuchus Molecular Cloud [PDF]

, 2010
We have obtained millimeter-wavelength photometry, high-resolution optical spectroscopy, and adaptive optics near-infrared imaging for a sample of 26 Spitzer-selected transition circumstellar disks.
Cieza, Lucas A., Evans, Neal J., Harvey, Paul M., Merin, Bruno, Mora, Marcelo D., Orellana, Mariana, Romero, Grisela A., Schreiber, Matthias R., Swift, Jonathan J., Williams, Jonathan P.   +9 more
core   +3 more sources

The Hydrodynamic Evolution of Binary Black Holes Embedded within the Vertically Stratified Disks of Active Galactic Nuclei

The Astrophysical Journal, 2023
Stellar-mass black holes can become embedded within the disks of active galactic nuclei (AGNs). Afterwards, their interactions are mediated by their gaseous surroundings.
Nicholas Kaaz, Sophie Lund Schrøder, Jeff J. Andrews, Andrea Antoni, Enrico Ramirez-Ruiz   +4 more
doaj   +1 more source

Investigating accretion disk – radio jet coupling across the stellar mass scale [PDF]

Proceedings of the International Astronomical Union, 2010
AbstractRelationships between the X-ray and radio behavior of black hole X-ray binaries during outbursts have established a fundamental coupling between the accretion disks and radio jets in these systems. I begin by reviewing the prevailing paradigm for this disk-jet coupling, also highlighting what we know about similarities and differences with ...
Miller-Jones, J.C.A., Sivakoff, G.R., Altamirano, D., Körding, E.G., Krimm, H.A., Maitra, D., Remillard, R.A., Russell, D.M., Tudose, V., Dhawan, V., Fender, R.P., Heinz, S., Markoff, S., Migliari, S., Rupen, M.P., Sarazin, C.L.   +15 more
openaire   +4 more sources

On the Origin of the Galaxy Star-Formation-Rate Sequence: Evolution and Scatter [PDF]

, 2010
We use a semi-analytic model for disk galaxies to explore the origin of the time evolution and small scatter of the galaxy SFR sequence -- the tight correlation between star-formation rate (SFR) and stellar mass (M_star).
Aaron A. Dutton, Agertz, Avila Reese, Avishai Dekel, Bell, Bigiel, Birnboim, Birnboim, Blitz, Blitz, Bothwell, Bouwens, Bruzual, Bullock, Bullock, Cattaneo, Chabrier, Cole, Cole, Courteau, Croton, Daddi, Daddi, Daddi, Daddi, Davé, Dekel, Dekel, Dekel, Dekel, Dunkley, Dutton, Dutton, Elbaz, Elmegreen, Elmegreen, Elmegreen, Erb, Firmani, Frank C. Van Den Bosch, Franx, Gao, Garnett, Gonzalez, Hatton, Hopkins, Kauffmann, Kauffmann, Kennicutt, Keres, Krumholz, Lilly, Lotz, Macciò, Macciò, Madau, Maller, Martin, Melbourne, Mo, Murray, Navarro, Navarro, Neistein, Noeske, Noeske, Pannella, Prochaska, Pérez-González, Salim, Schiminovich, Schiminovich, Schmidt, Sharma, Shen, Sobral, Somerville, Somerville, Stark, Sutherland, Tacconi, Tacconi, Tacconi, Van Den, Van Den, Van Den Bosch, Villar, Wechsler, Williams, Wolf, Wong, Wu, Zhao   +92 more
core   +1 more source