Zobrazeno 1 - 10
of 48 372
pro vyhledávání: '"Accretion rate"'
The accretion flow onto a neutron star will be impacted due to irradiation by a Type I X-ray burst. The burst radiation exerts Poynting-Robertson (PR) drag on the accretion disk, leading to an enhanced mass accretion rate. Observations of X-ray burst
Externí odkaz:
http://arxiv.org/abs/2409.05737
Autor:
Gurian, James, Liu, Boyuan, Jeong, Donghui, Hosokawa, Takashi, Hirano, Shingo, Yoshida, Naoki
We present an analytic description of the spherically symmetric gravitational collapse of radiatively cooling gas clouds. The approach is based on developing the "one-zone" density-temperature relationship of the gas into a full dynamical model. We c
Externí odkaz:
http://arxiv.org/abs/2408.12940
Autor:
Wu, Yinhao
Over two hundred protoplanetary disk systems have been resolved by ALMA, and the vast majority suggest the presence of planets. The dust gaps in transition disks are considered evidence of giant planets sculpting gas and dust under appropriate disk v
Externí odkaz:
http://arxiv.org/abs/2406.02544
Using the MESA code, we have carried out a detailed survey of the available parameter space for the double-peaked type I X-ray bursts. We find that the double-peaked structure appears at mass accretion rate $\dot{M}$ in the range of $\sim(4-8)\times1
Externí odkaz:
http://arxiv.org/abs/2403.03697
Autor:
Almendros-Abad, V., Manara, C. F., Testi, L., Natta, A., Claes, R. A. B., Muzic, K., Sanchis, E., Alcalá, J. M., Bayo, A., Scholz, A.
The time evolution of the dependence of the mass accretion rate with the stellar mass and the disk mass represents a fundamental way to understand the evolution of protoplanetary disks and the formation of planets. In this work, we present observatio
Externí odkaz:
http://arxiv.org/abs/2402.10523
Autor:
Rota, Alessia A., Meijerhof, Jurrian D., van der Marel, Nienke, Francis, Logan, van der Tak, Floris S., Sellek, Andrew D.
The inner regions of protoplanetary disks are the locations where most of planets are thought to form and where processes that influence the global evolution of the disk, such as MHD-winds and photoevaporation, originate. Transition disks (TDs) with
Externí odkaz:
http://arxiv.org/abs/2401.05798
Autor:
Marchev, V., Zamanov, R.
We analyze photometric observations of the symbiotic star MWC 560 in B and V bands obtained during the period 1990-2023. We estimate the luminosity and the mass accretion rate of the hot component. We find that the luminosity varies in the range from
Externí odkaz:
http://arxiv.org/abs/2312.04208
How does the radio enhancement of broad absorption line quasars relate to colour and accretion rate?
Autor:
Petley, J. W., Morabito, L. K., Rankine, A. L., Richards, G. T., Thomas, N. L., Alexander, D. M., Fawcett, V. A., Rivera, G. Calistro, Prandoni, I., Best, P. N., Kolwa, S.
The origin of radio emission in different populations of radio-quiet quasars is relatively unknown, but recent work has uncovered various drivers of increased radio-detection fraction. In this work, we pull together three known factors: optical colou
Externí odkaz:
http://arxiv.org/abs/2402.18623
We present here estimates of the average rates of accretion of neutral gas onto main-sequence galaxies and the conversion of atomic gas to molecular gas in these galaxies at two key epochs in galaxy evolution: (i) $z\approx1.3-1.0$, towards the end o
Externí odkaz:
http://arxiv.org/abs/2311.00025
Star-forming galaxies are believed to replenish their atomic gas reservoir, which is consumed in star-formation, through accretion of gas from their circumgalactic mediums (CGMs). However, there are few observational constraints today on the gas accr
Externí odkaz:
http://arxiv.org/abs/2309.05937