Results 21 to 30 of about 278,789 (290)

Pulsed Accretion in the T Tauri Binary TWA 3A [PDF]

, 2017
TWA 3A is the most recent addition to a small group of young binary systems that both actively accrete from a circumbinary disk and have spectroscopic orbital solutions.
Akeson, Rachel L., Ciardi, David R., Herczeg, Gregory J., Mathieu, Robert D., Tofflemire, Benjamin M.   +4 more
core   +3 more sources

Contributions of Organic and Mineral Matter to Vertical Accretion in Tidal Wetlands across a Chesapeake Bay Subestuary

Journal of Marine Science and Engineering, 2021
Persistence of tidal wetlands under conditions of sea level rise depends on vertical accretion of organic and inorganic matter, which vary in their relative abundance across estuarine gradients.
Jenny R. Allen, Jeffrey C. Cornwell, Andrew H. Baldwin   +2 more
doaj   +1 more source

Spherical Bondi accretion onto a magnetic dipole [PDF]

, 1998
Quasi-spherical supersonic (Bondi-type) accretion to a star with a dipole magnetic field is investigated using resistive magnetohydrodynamic simulations.
Bisnovatyi-Kogan G. S., Bondi H., Davies R. E., Illarionov A. F., Kazhdan Ya. M., Lovelace R. V. E., M. M. Romanova, Nagase F., O. D. Toropina, Paczynski B., Pringle R. E., R. V. E. Lovelace, Savelyev V. V., Savelyev V. V., V. M. Chechetkin, V. V. Savelyev, Wang Y.-M., Yu. M. Toropin, Zhukov V. T.   +18 more
core   +3 more sources

Competitive accretion in embedded stellar cluster [PDF]

, 2001
We investigate the physics of gas accretion in young stellar clusters. Accretion in clusters is a dynamic phenomenon as both the stars and the gas respond to the same gravitational potential.
Bate, M. R., Bonnell, I. A., Clarke, C. J., Pringle, J. E.   +3 more
core   +3 more sources

Accretion Rates and the Accretion Efficiency in AGNs [PDF]

Publications of the Astronomical Society of Japan, 2003
Abstract We used the standard geometrical-thin accretion theory to obtain the accretion rates in Seyfert 1 galaxies and quasars. Combining the accretion rates with the bolometric luminosity, we obtained the accretion efficiency. We found that most Seyfert 1 galaxies and radio-quiet quasars have lower accretion efficiencies, while most ...
Weihao, Bian, Yongheng, Zhao
openaire   +2 more sources

The Growth and Structure of Dark Matter Haloes [PDF]

, 2002
In this paper, we analyse in detail the mass-accretion histories and structural properties of dark haloes in high-resolution N-body simulations.
Boerner, Gerhard, Jing, Yipeng, Mo, Houjun, Zhao, Donghai   +3 more
core   +4 more sources

Impacts of urbanization and tourism on the erosion and accretion of European, Asian and African coastal areas and possible solutions [PDF]

Urbanism. Arhitectura. Constructii, 2020
Coastal areas are very important due to the ecosystem services provided to the inhabitants. However, these advantages have resulted into an increasing attraction, especially in the recent centuries.
Huu Duy Nguyen, Walid Hamma, Mari-Isabella Stan, Van Truong Tran, Roxana Aştefănoaiei, Quang-Thanh Bui, Dragoş-Florian Vintilă, Quang Tuan Pham, Cristina Lixăndroiu, Quang Hai Truong, Diana-Doina Ţenea, Ioan Ianoş   +11 more
doaj  

Intermediate-Mass Black Holes: The Essential Population to Explore the Unified Model for Accretion and Ejection Processes

Galaxies, 2023
We study radio and X-ray emissions from intermediate-mass black holes (IMBHs) and explore the unified model for accretion and ejection processes. The radio band survey of IMBH (candidate) hosted galaxies indicates that only a small fraction (∼0.6%) of ...
Xiaolong Yang, Jun Yang
doaj   +1 more source

Spherical Accretion [PDF]

, 2006
We compare different examples of spherical accretion onto a gravitating mass. Limiting cases include the accretion of a collisionally dominated fluid and the accretion of collisionless particles.
Begelman M. C., Bondi H., Peter Goldreich, Re'em Sari   +3 more
core   +2 more sources

A Transition in the Accretion Properties of Radio-Loud Active Nuclei [PDF]

, 2004
We present evidence for the presence of a transition in the accretion properties of radio-loud sources. For a sample of radio galaxies and radio-loud quasars, selected based on their extended radio properties, the accretion rate is estimated from the ...
Aitken, Annalisa Celotti, Antonucci, Ashman, Baganoff, Balbus, Balbus, Baum, Bicknell, Blandford, Blandford, Blandford, Blandford, Blundell, Bower, Boyle, Burstein, Burstein, Capetti, Cassaro, Cavaliere, Celotti, Celotti, Chiaberge, Chiaberge, Chiaberge, Chiaberge, Cirasuolo, Crawford, Danilo Marchesini, Di Matteo, Di Matteo, Dopita, Dunlop, Dunlop, Elvis, Fabian, Fanaroff, Fender, Ferland, Ferrarese, Ferrarese, Ferrarese, Fukugita, Gebhardt, Gebhardt, Gelderman, Ghisellini, Ghosh, Gopal-Krishna, Grimes, Hawley, Heckman, Hill, Hine, Ho, Hutchings, Impey, Jackson, Jackson, Kollgaard, Kormendy, Laing, Laor, Laura Ferrarese, Lawrence, Ledlow, Lehnert, Livio, Livio, Macchetto, Mahadevan, McLure, McLure, Meier, Meier, Merloni, Merritt, Narayan, Narayan, Narayan, Narayan, O'Dowd, Oshlack, Pellegerini, Quataert, Rawlings, Rawlings, Rees, Reynolds, Schlegel, Shakura, Simpson, Simpson, Spinrad, Tadhunter, Urry, Van Der Marel, Wang, Willott, Willott, Willott, Willott, Willott, Wills, Woo, Woo, Zirbel   +107 more
core   +1 more source