small massblack hole detectionnumber density upper limit/ A9530 Fundamental aspects of astrophysics A9760L Black holesANY star which has exhausted all of its nuclear fuel and which cannot eject sufficient matter so that its mass becomes less than roughly two solar masses, must undergo gravitational...
CHICAGO, June 11 (Xinhua) -- A team of astronomers have discovered that a black hole at the center of a nearby dwarf galaxy, called NGC 4395, is about 40 times smaller than previously thought. To determine the mass of NGC's black hole, the astronomers employed reverberation mapping, which...
space-time configurations/ black hole maximum massspacetimeexternal universeX-ray radiationCygnus starX-1/ A0470 Physics of black holes A0240 Geometry, differential geometry, and topology A9880D Theoretical cosmologyIn this small review we present the actual state the knowledge about weighting black ...
include the first confirmed discovery of an intermediate-mass black hole in the few-hundred solar-mass range, either as a merger of two such black holes [e.g., 314–316] or as an intermediate-mass-ratio inspiral of a stellar-mass compact object into such a black hole [e.g., 77,317...
Massive black holes (BHs) at the centres of massive galaxies are ubiquitous. The population of BHs within dwarf galaxies, on the other hand, is not yet known. Dwarf galaxies are thought to harbour BHs with proportionally small masses, including intermediate-mass BHs, with masses 102 < MBH...
black holes in this mass range is the core of a globular cluster. This is for two reasons. First, that many formation scenarios for such black hole masses place them at the bottom of potential wells in crowded stellar environments, and second, that the crowded stellar environment provides one...
A. large B. small C. far D. near 相关知识点: 试题来源: 解析 B。解析:黑洞的质量集中在一个非常小的区域内,这是黑洞的特性之一。从语法和语义上看,small表示小,与黑洞质量高度集中的宇宙奥秘知识相匹配。large表示大,far表示远,near表示近,都不符合黑洞质量的这种特性。反馈...
We calculate the mass distribution of black holes formed and compare these predictions to the observations, which represent a small biased subset of the black hole population. Uncertainties in these estimates are discussed.doi:10.1086/307647Fryer...
Using theHubble Space Telescope, researchers have found an intermediate-massblack holesurrounded by a cluster of young, blue stars. This is the first finding of its kind and based on the presence of the star cluster, researchers believe that the black hole was once at the core of a now-dis...
combination of formation scenarios is physically viable. This new study, published in theAstrophysical Journal Letters, is the first to show that both large and small black hole masses can result from a single pathway, wherein the black holes gain mass from the expansion of the universe itself....