Results 21 to 30 of about 40,102 (196)
On Orbital Period Changes in Nova Outbursts [PDF]
, 2011 We propose a new mechanism that produces an orbital period change during a nova outburst. When the ejected material carries away the specific angular momentum of the white dwarf, the orbital period increases.
Banerjee +42 more
core +3 more sources
Distinguishing between different mechanisms of FU-Orionis-type luminosity outbursts [PDF]
Astronomy & Astrophysics, 2021 Aims. Accretion and luminosity bursts can be triggered by three distinct mechanisms: the magnetorotational instability (MRI) in the inner disk regions, clump infall in gravitationally fragmented disks, and close encounters with an intruder star. We study all three of these burst mechanisms to determine the disk kinematic characteristics that can help ...
Eduard I. Vorobyov +3 more
openaire +2 more sources
Study on the impact force evolution law of coal and gas outburst under high ground stress
Meitan kexue jishu, 2023 With the increase of mining depth and intensity, the dynamic disaster of coal and gas outburst was frequent. The disaster-causing mechanism of impact force has become the main direction of current research.
Jupeng TANG +4 more
doaj +1 more source
X-ray observations of classical novae. Theoretical implications [PDF]
, 2009 Detection of X-rays from classical novae, both in outburst and post-outburst, provides unique and crucial information about the explosion mechanism. Soft X-rays reveal the hot white dwarf photosphere, whenever hydrogen (H) nuclear burning is still on and
Balman +53 more
core +2 more sources
International Journal of Mining Science and Technology, 2023 Faced with the continuous occurrence of coal and gas outburst (hereinafter referred to as “outburst”) disasters, as a main controlling factor in the evolution process of an outburst, for gas pressure, it is still unclear about the phased characteristics ...
Chaojie Wang +4 more
doaj +1 more source
Possible Mechanisms for Cometary Outbursts [PDF]
International Astronomical Union Colloquium, 1991 Abstract.A cometary outburst is an unexpected flare-up in the brightness of a comet, with the brightness normally increasing by 2 to 3 magnitudes, but on occasion by up to 5. This outburst is superimposed on the general change in brightness that is related to the comet’s heliocentric and geocentric distance, spin phase, spin axis orientation and ...
openaire +1 more source
Meikuang Anquan, 2020 The outburst risk factors of Ji15-17 coal seam in Pingmei No. 13 coal mine were studied, eight warning indicators were established from the aspects of the distance between the working face and the footwall of fault, the distance between the working face
GAO Jiancheng, NING Xiaoliang, QIN Muguang
doaj +1 more source
Meitan xuebao, 2023 As the disaster-causing characteristics of coal and gas outburst and the mechanism of induced mine airflow disaster are not clear, the facilities such as air door and self-rescue system are often arranged on site according to miner’s experience, thus it ...
Xuelin YANG +6 more
doaj +1 more source
A Testing Apparatus for Gas-Driven Coal and Gas Outbursts and its Application
Frontiers in Earth Science, 2022 In this study, a multi-physics coal and gas outburst experimental apparatus is developed to allow investigating the gas-driven mechanism behind the disaster caused by coal and gas outbursts in tectonic regions. The apparatus can simulate the coal and gas
Yunlong Zou +4 more
doaj +1 more source
Radio-to-UV monitoring of AO 0235+164 by the WEBT and Swift during the 2006--2007 outburst [PDF]
, 2008 The blazar AO 0235+164 was claimed to show a quasi-periodic behaviour in the radio and optical bands. Moreover, an extra emission component contributing to the UV and soft X-ray flux was detected, whose nature is not yet clear.
A. A. Arkharov +91 more
core +2 more sources