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Yen-Jie Lee probes particle collision data for clues to the universe’s origins（图）
粒子碰撞数据 宇宙起源 粒子物理学
2023/6/9
When Yen-Jie Lee came to MIT as a graduate student in 2006, it was a bit of a culture shock. The aspiring particle physicist had studied physics at National Taiwan University before his career took a ...
Birth of magnetar from colossal collision potentially spotted for first time（图）
Birth of magnetar colossal collision potentially spotted first time
2020/11/20
Long ago and far across the universe, an enormous burst of gamma rays unleashed more energy in a half-second than the sun will produce over its entire 10-billion-year lifetime.After examining the incr...
Astronomers find a golden glow from a distant stellar collision（图）
Astronomers golden glow distant stellar collision
2019/11/15
An NSF-supported team of astronomers found new evidence of the occurrence of a kilonova -- a cosmic explosion that creates massive amounts of gold and platinum -- that went unnoticed during initial ob...
Radio “Eyes” Unlocking Secrets of Neutron-Star Collision（图）
Radio Eyes Unlocking Neutron-Star Collision
2017/10/26
When a pair of superdense neutron stars collided and potentially formed a black hole in a galaxy 130 million light-years from Earth, they unleashed not only a train of gravitational waves but also an ...
LIGO And Virgo Observatories Jointly Detect Black Hole Collision（图）
LIGO And Virgo Observatories Jointly Detect Black Hole Collision
2017/10/24
In August, detectors on two continents recorded gravitational wave signals from a pair of black holes colliding. This discovery, announced today, is the first observation of gravitational waves by thr...
Collision and gravitational reaccumulation:Possible formation mechanism of the asteroid Itokawa
gravitation methods:numerical minor planets asteroids:general minor planets asteroids:individual:Itokawa
2015/12/25
Aims: We investigate the possibility that the observed sea-otter shape of the asteroid Itokawa, associated with the presence of big boulders on its surface, originates from the reaccumulation process ...
The response of atomic and molecular gas to a disk -disk collision
Physical Atoms Molecules Gas Gas particles Mapping the atom Kinematics The stars
2014/12/9
The physical and morphological properties of the atomic and molecular gas in early stage interacting systems are investigated in detail using two complementary approaches; (1) by studying the response...
Failed dwarf galaxy survives galactic collision thanks to full dark-matter jacket
Failed dwarf galaxy survives galactic collision thanks full dark-matter jacket
2014/6/19
Like a bullet wrapped in a full metal jacket, a high-velocity hydrogen cloud hurtling toward the Milky Way appears to be encased in a shell of dark matter, according to a new analysis of data from the...
Collision of an innermost stable circular orbit particle around a Kerr black hole
innermost stable circular orbit particle Kerr black hole
2011/1/13
We derive a general formula for the center-of-mass (CM) energy for the near-horizon collision of two particles of the same rest mass on the equatorial plane around a Kerr black hole. We then apply thi...
The Internal-Collision-Induced Magnetic Reconnection and Turbulence (ICMART) Model of Gamma-Ray Bursts
gamma-rays burst general gamma-ray bursts individual GRB 080916C magnetic reconnection turbulence
2010/11/11
The recent Fermi observation of GRB 080916C shows that the bright photosphere emission associated with a putative fireball is missing, which suggests that the central engine likely launches a Poynting...
A collision in 2009 as the origin of the debris trail of asteroid P/2010 A2
Earth and Planetary Astrophysics (astro-ph.EP)
2011/1/5
The peculiar object P/2010 A2 was discovered by the LINEAR near-Earth asteroid survey in January 2010 and given a cometary designation due to the presence of a trail of material, although there was no...
Star Formation in Collision Debris: Insights from the modeling of their Spectral Energy Distribution
Cosmology and Extragalactic Astrophysics (astro-ph.CO) Galaxy Astrophysics (astro-ph.GA)
2010/12/28
During galaxy-galaxy interactions, massive gas clouds can be injected into the intergalactic medium which in turn become gravitationally bound, collapse and form stars, star clusters or even dwarf gal...
Temperature variations and n+/o+ in the orion nebula II the collision strengths
Temperature variations n+/o+ orion nebula II
2009/6/8
Temperature variations and n+/o+ in the orion nebula II the collision strengths。
A two-body system is being considered in a PN formalism involving
higher powers of variables and mixed terms. The McGehee-type coordinate
transformations are used to blow up the collision singularit...
THE ZONAL SATLLITE PROBLEM. I. NEAR-COLLISION FLOW
NEAR-COLLISION FLOW ZONAL SATLLITE PROBLEM
2009/3/26
The force field described by a potential function of the form U =
n
k=1 ak/rk (r = distance between particles, ak = real parameters) models various
concrete situations belonging to astronomy, phys...