Results 41 to 50 of about 152,722 (200)

Black Hole Hyperaccretion in Collapsars: A Review

Universe, 2022
The collapsar model is widely accepted as one of the standard scenarios for gamma-ray bursts (GRBs). In the massive collapsar scenario, the core will collapse to a black hole (BH) surrounded by a temporary hyperaccretion disk with a very high accretion ...
Yun-Feng Wei, Tong Liu
doaj   +1 more source

The black hole accretion code [PDF]

, 2016
We present the black hole accretion code (BHAC), a new multidimensional general-relativistic magnetohydrodynamics module for the MPI-AMRVAC framework.
O. Porth, H. Olivares, Y. Mizuno, Z. Younsi, L. Rezzolla, M. Mościbrodzka, H. Falcke, M. Kramer   +7 more
semanticscholar   +1 more source

Disk-mediated accretion burst in a high-mass young stellar object [PDF]

Nature Physics, 2016
Observations show that, like light solar-mass stars, heavy stars also form through episodic disk-accretion; but faster, more energetic and emitting more light. Solar-mass stars form via disk-mediated accretion.
A. C. O. Garatti, B. Stecklum, R. G. Lopez, J. Eisloffel, T. Ray, A. Sanna, R. Cesaroni, C. Walmsley, R. Oudmaijer, W. D. Wit, L. Moscadelli, J. Greiner, A. Krabbe, C. Fischer, R. Klein, J. P. F. I. F. A. Studies, Thuringer Landessternwarte Tautenburg, M. F. Radioastronomie, Inaf - Arcetri, U. Leeds, Eso European Organisation for Astronomical Research in Hemisphere, Max-Planck-Institut fur extraterrestrische Physik, Deutsches Sofia Institut, N. R. Center, Inst. de Astrof'isica de Andaluc'ia   +24 more
semanticscholar   +1 more source

Possible Wormhole Candidates in Active Galactic Nuclei

Universe, 2020
The hypothesis is considered that the active galactic nuclei (AGNs) are wormhole (WH) mouths rather than supermassive black holes (SMBHs). We study the difference in the physical properties of such objects from those of AGNs with SMBH, as well as the the
Mikhail Piotrovich, Serguei Krasnikov, Stanislava Buliga, Tinatin Natsvlishvili   +3 more
doaj   +1 more source

Galactic star formation and accretion histories from matching galaxies to dark matter haloes [PDF]

, 2012
We present a new statistical method to determine the relationship between the stellar masses of galaxies and the masses of their host dark matter haloes over the entire cosmic history from z 4 to the present.
B. Moster, T. Naab, S. White
semanticscholar   +1 more source

A novel subsurface sediment plate method for quantifying sediment accumulation and erosion in seagrass meadows

Frontiers in Marine Science, 2023
Sediment dynamics in seagrass meadows are key determinants of carbon sequestration and storage, surface elevation, and resilience and recovery from disturbance. However, current methods for measuring sediment accumulation are limited.
Carolyn J. Ewers Lewis, Karen J. McGlathery   +1 more
doaj   +1 more source

Tectonic-geodynamical zoning of the Ural-Timan-Paleoasian segment of Eurasia

Литосфера, 2015
Methodology of geological zoning of orogenic belts, adequate to mobilistic paradigma, should be in a natural way correspond to geodynamics conception, taking into consideration the positions of lithospheric plate tectonics.
V. M. Necheukhin, E. N. Volchek
doaj  

Impact of wave energy and sediment transport on shoreline changes: A multi-temporal satellite image analysis in Galesong, Takalar Regency, Indonesia

Journal of Degraded and Mining Lands Management
Galesong Beach, located in Takalar Regency, South Sulawesi, is a coastal area that has experienced significant shoreline changes due to anthropogenic activities, such as coastal development and land use, and oceanographic factors, particularly wave ...
Sakka Sakka, Alimuddin Hamzah Assegaf, Amiruddin Amiruddin, Saaduddin Saaduddin, Siti Nur Azisah Aprianti Azis, Andi Muhammad Imran Ismail   +5 more
doaj   +1 more source

Mass Transfer in Mira-Type Binaries

Open Astronomy, 2012
Detached, symbiotic binaries are generally assumed to interact via Bondi-Hoyle-Littleton (BHL) wind accretion. However, the accretion rates and outflow geometries that result from this mass-transfer mechanism cannot adequately explain the observations of
Mohamed S., Podsiadlowski Ph.
doaj   +1 more source

Geospatial technology based shoreline change analysis (1992–2022) and predictive forecast modeling for 2032 and 2042, utilizing DSAS, along the eastern coast of India

Kuwait Journal of Science
This study presents a comprehensive analysis of shoreline dynamics in the Thanjavur district, focusing on erosion and accretion trends from 1992 to 2022. The coastal region was partitioned based on Taluk boundaries to discern distinct patterns in erosion
Harikrishna S., Gurugnanam B., Bairavi S.   +2 more
doaj   +1 more source