BeppoSAX and Chandra Observations of SAX J0103.2-7209 = 2E 0101.5-7225: A New Persistent 345 Second X-Ray Pulsar in the Small Magellanic Cloud [0.03%]
贝ppoSAX和钱德拉观测到的SAX J0103.2-7209 = 2E 0101.5-7225：小麦哲伦星云中一个新的持久存在的345秒x射线脉冲星
GL Israel,S Campana,S Covino et al.
GL Israel et al.
We report the results of a 1998 July BeppoSAX observation of a field in the Small Magellanic Cloud which led to the discovery of approximately 345 s pulsations in the X-ray flux of SAX J0103.2-7209. The BeppoSAX X-ray spectrum is well fitte...
Induction of Supernova-like Explosions by Gamma-Ray Bursts in Close Binary Systems [0.03%]
伽玛射线暴引发现食双星系统的超新星爆发式爆炸现象
M Milgrom,VV Usov
M Milgrom
We propose that a gamma-ray burst in one member of a binary may induce a supernova-like explosion of a close, white dwarf companion. Such an explosion might be brought about in rather light companions, which cannot undergo the standard accr...
K Kifonidis,T Plewa,H Janka et al.
K Kifonidis et al.
High-resolution two-dimensional simulations were performed for the first 5 minutes of the evolution of a core-collapse supernova explosion in a 15 M middle dot in circle blue supergiant progenitor. The computations start shortly after bounc...
MA Aloy,E Müller,JM Ibáñez et al.
MA Aloy et al.
Using a collapsar progenitor model of MacFadyen & Woosley, we have simulated the propagation of an axisymmetric jet through a collapsing rotating massive star with the GENESIS multidimensional relativistic hydrodynamic code. The jet forms a...
An Intermittent Star Formation History in a "Normal" Disk Galaxy: The Milky Way [0.03%]
《银河系的间歇性星形成历史》
HJ Rocha-Pinto,J Scalo,WJ Maciel et al.
HJ Rocha-Pinto et al.
The star formation rate history of the Milky Way is derived using the chromospheric age distribution for 552 stars in the solar neighborhood. The stars' sample birth sites are distributed over a very large range of distances because of orbi...
LX Li
LX Li
When magnetic field lines thread a rotating black hole's horizon and connect with remote astrophysical loads, the rotational energy of the black hole can be extracted through the Blandford-Znajek mechanism. Due to the rotation of the black ...
RA Swaters,BF Madore,M Trewhella
RA Swaters
High-resolution Halpha rotation curves are presented for five low surface brightness galaxies. These Halpha rotation curves have shapes different from those previously derived from H i observations, probably because of the higher spatial re...
A Near-Infrared Photometric Plane for Elliptical Galaxies and Bulges of Spiral Galaxies [0.03%]
椭圆星系和螺旋星系亮球的近红外光度平面关系式
HG Khosroshahi,Y Wadadekar,A Kembhavi et al.
HG Khosroshahi et al.
We report the existence of a single plane in the space of global photometric parameters describing elliptical galaxies and the bulges of early-type spiral galaxies. The three parameters that define the plane are obtained by fitting the Sers...
Evidence for Stellar Streaming in the Cores of Elliptical Galaxies: A Kinematic Signature of Mergers? [0.03%]
椭圆星系核心恒星运动学证据及其并合起源迹象？
MJ Pierce,RC Berrington
MJ Pierce
We present evidence for non-Gaussian velocity fields within the cores of luminous elliptical galaxies. This evidence is based on high signal-to-noise ratio, medium-resolution spectroscopy of the cores of early-type members of the Virgo and ...
Detection of an X-Ray Hot Region in the Virgo Cluster of Galaxies with ASCA [0.03%]
用ASCA探测室女座星系团中的X射线高能区
K Kikuchi,C Itoh,A Kushino et al.
K Kikuchi et al.
Based on mapping observations with ASCA, an unusual hot region with a spatial extent of 1 deg2 was discovered between M87 and M49 at a center coordinate of R.A.=12h27m36s and decl.=9&j0;18' (J2000). The X-ray emission from the region has a ...