搜索结果: 61-75 共查到“国际动态 天体物理学”相关记录378条 . 查询时间(1.685 秒)
黑洞自转增加电波辐射强度
黑洞自转 电波 辐射强度
2018/1/16
日本国立天文台安德雷斯·舒尔茨领导的一个研究小组通过对多个超大质量黑洞研究发现，黑洞的自转可能有助于形成高速喷射流，而高速喷射流是远方宇宙传来的电波之源。多数星系的中心存在超过太阳质量数百万倍的超大质量黑洞，由于黑洞能吸收包括光在内的所有电磁波，因此无法直接观看其真容。但是在黑洞周围，有向中心聚集过程中超高温物质形成的吸积盘，吸积盘可发出光线。天文学家可观测到具有吸积盘的黑洞释放的电波，这种释放电...
Fast Radio Bursts ‘Twists And Shouts’ Help Scientists Determine Source Of Cosmic Blasts
Fast Radio Bursts Twists Shouts Scientists Cosmic Blasts
2018/1/31
An international group of astronomers has found that the Cornell University-discovered fast radio burst FRB 121102 – a brief, gigantic pulse of radio waves from 3 billion light years away – passes thr...
Supermassive Black Holes Control Star Formation In Large Galaxies（图）
Supermassive Black Holes Control Star Formation Large Galaxies
2018/1/10
Young galaxies blaze with bright new stars forming at a rapid rate, but star formation eventually shuts down as a galaxy evolves. A new study, published January 1, 2018, in Nature, shows that the mass...
Radio Observations Point to Likely Explanation for Neutron-Star Merger Phenomena（图）
Radio Observations Point Likely Explanation Neutron-Star Merger
2018/1/10
Three months of observations with the National Science Foundation’s Karl G. Jansky Very Large Array (VLA) have allowed astronomers to zero in on the most likely explanation for what happened in the af...
Six-Decade-Old Space Mystery Solved With Shoebox-Sized Satellite Called A CubeSat（图）
Six Decade Old Space Mystery Shoebox-Sized Satellite CubeSat
2017/12/19
A 60-year-old mystery about the source of energetic, potentially damaging particles in Earth's radiation belts has been solved using data from a shoebox-sized satellite built and operated by students....
Black holes are famous for their muscle: an intense gravitational pull known to gobble up entire stars and launch streams of matter into space at almost the speed of light.It turns out the reality may...
NSF statement on latest LIGO-Virgo detection of binary black hole merger（图）
NSF latest LIGO-Virgo binary black hole merger
2017/12/19
Scientists supported by the National Science Foundation (NSF) recently announced the detection of the merger of two relatively "light" black holes, 7 and 12 times the mass of the sun, respectively, at...
Gargantua in the Mist:A Precocious Black Hole Behemoth at the Edge of Cosmic Dawn（图）
Gargantua in the Mist Precocious Black Hole Behemoth Edge of Cosmic Dawn
2017/12/19
Supermassive black holes lurk at the centers of many galaxies. While some — like the black hole at the center of our own Galaxy — live quiet lives, occasionally snacking on a star or two, others feed ...
Scientists Observe Supermassive Black Hole In Infant Universe（图）
Scientists Supermassive Black Hole Infant Universe
2017/12/19
A team of astronomers, including two from MIT, has detected the most distant supermassive black hole ever observed. The black hole sits in the center of an ultrabright quasar, the light of which was e...
NSF-Funded Research To Forecast Space Weather,Protect The Power Grid,Pipelines And Satellites
NSF Forecast Space Weather,Power Grid Pipelines Satellites
2017/12/19
While Earth's weather reports center on precipitation, temperature, wind direction and velocity, and humidity, space weather forecasts attempt to predict activity that occurs on the sun -- and how the...
Study sheds light on turbulence in astrophysical plasmas（图）
sheds light turbulence astrophysical plasmas
2017/12/19
Plasmas, gas-like collections of ions and electrons, make up an estimated 99 percent of the visible matter in the universe, including the sun, the stars, and the gaseous medium that permeates the spac...
Green Bank Observatory:NSF Releases Draft Environmental Impact Statement（图）
Green Bank Observatory NSF Draft Environmental Impact
2017/12/19
On Nov. 8, 2017, the National Science Foundation (NSF) published the Draft Environmental Impact Statement (DEIS) for the Green Bank Observatory in Green Bank, West Virginia.NSF prepared the DEIS in co...
Zwicky Transient Facility Opens Its Eyes to the Volatile Cosmos（图）
Zwicky Transient Facility Opens Its Eyes Volatile Cosmos
2017/11/24
A new robotic camera with the ability to capture hundreds of thousands of stars and galaxies in a single shot has taken its first image of the sky, an event astronomers refer to as "first light." The ...
NSF selects Anne Kinney to head Mathematical and Physical Sciences Directorate（图）
NSF Anne Kinney Mathematical and Physical Sciences Directorate
2017/11/23
The National Science Foundation (NSF) has selected Dr. Anne Kinney to serve as head of the Directorate for Mathematical and Physical Sciences (MPS), which supports fundamental research in astronomy, c...
Physicists describe new dark matter detection strategy（图）
Physicists new dark matter detection strategy
2017/11/23
Physicists from Brown University have devised a new strategy for directly detecting dark matter, the elusive material thought to account for the majority of matter in the universe.The new strategy, wh...