Results 1 to 10 of about 306,823 (323)
Hoyle-Lyttleton Accretion onto Accretion Disks [PDF]
Publications of the Astronomical Society of Japan, 1999 We investigate Hoyle-Lyttleton accretion for the case where the central source is a luminous accretion disk. %In classical Hoyle-Lyttleton accretion onto a ``spherical'' source, accretion takes place in an axially symmetric manner around a so-called ...
Fukue, Jun, Ioroi, Masayuki
core +5 more sources
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
Геодинамика и тектонофизика, 2021 The formation of continental crust in the Mongolia-Transbaikalia region is researched to identify the mechanisms of interactions between the crust and the mantle in the development of the Neoarchean, Proterozoic and Paleozoic magmatic and sedimentary ...
I. V. Gordienko
doaj +1 more source
Frontiers in Astronomy and Space Sciences, 2021 One normal outburst and three mini-outbursts have been detected by Rossi X-ray Timing Explorer satellite after 2000 in the well-known black hole X-ray binary XTE J1550-564.
Ai-Jun Dong +10 more
doaj +1 more source
Acclimatization Drives Differences in Reef-Building Coral Calcification Rates
Diversity, 2020 Coral reefs are susceptible to climate change, anthropogenic influence, and environmental stressors. However, corals in Kāneʻohe Bay, Hawaiʻi have repeatedly shown resilience and acclimatization to anthropogenically-induced rising temperatures and ...
Kelsey Archer Barnhill +6 more
doaj +1 more source
The Radiative Transfer in Accretion Discs with Linear Plank Function: Role of Scattering Effect [PDF]
Iranian Journal of Astronomy and Astrophysics, 2020 Radiative transfer in a geometrically thin accretion disc with fnite optical depth is considered under the plane-parallel approximation. The Eddington factor that is defned as the ratio of the mean intensity to radiation stress tensor, is assumed be ...
Fahimeh Habibi, Maryam Samadi
doaj +1 more source
Reference Array and Design Consideration for the Next-Generation Event Horizon Telescope
Galaxies, 2023 We describe the process to design, architect, and implement a transformative enhancement of the Event Horizon Telescope (EHT). This program—the next-generation Event Horizon Telescope (ngEHT)—will form a networked global array of radio dishes capable of ...
Sheperd S. Doeleman +28 more
doaj +1 more source
A Brief Review on Primordial Black Holes as Dark Matter
Frontiers in Astronomy and Space Sciences, 2021 Primordial black holes (PBHs) represent a natural candidate for one of the components of the dark matter (DM) in the Universe. In this review, we shall discuss the basics of their formation, abundance and signatures.
Pablo Villanueva-Domingo +2 more
doaj +1 more source
TERRAIN TECTONICS OF THE CENTRAL ASIAN FOLDED BELT
Геодинамика и тектонофизика, 2015 The terrain analysis concept envisages primarily a possibility of approximation of fragments / terrains of various geodynamic settings which belong to different plates. The terrain analysis can supplement the theory of plate tectonics in solving problems
M. M. Buslov
doaj +1 more source
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 +2 more
doaj +1 more source