High-Resolution Spectroscopy of the X-Ray-photoionized Wind in Cygnus X-3 with the Chandra High-Energy Transmission Grating Spectrometer [0.03%]
使用钱德拉高能传输光栅分光仪对天鹅座X-3的X射线电离星风进行高分辨率分光 spectroscopy of the x-ray-photoionized wind in Cygnus X-3 with the Chandra high-energy transmission grating spectrometer
F Paerels,J Cottam,M Sako et al.
F Paerels et al.
We present a preliminary analysis of the 1-10 keV spectrum of the massive X-ray binary Cygnus X-3, obtained with the high-energy transmission grating spectrometer on the Chandra X-Ray Observatory. The source reveals a richly detailed discre...
Detection of a 5 Hz Quasi-periodic Oscillation from X-Ray Nova GRS 1739-278 [0.03%]
从X射线新星GRS 1739-278探测到5 Hz准周期振荡信号
KN Borozdin,SP Trudolyubov
KN Borozdin
The X-ray nova GRS 1739-278 flared up near the Galactic center in the spring of 1996. Here we report on the discovery of an approximately 5 Hz quasi-periodic oscillation (QPO) in Rossi X-Ray Timing Explorer/PCA observations of GRS 1739-278....
Rearrangement of the Fermi Surface of Dense Neutron Matter and the Direct Urca Cooling of Neutron Stars [0.03%]
密集中子物质费米面的重组与中子星直接乌尔卡冷却模式的影响
DN Voskresensky,VA Khodel,MV Zverev et al.
DN Voskresensky et al.
It is proposed that a rearrangement of single-particle degrees of freedom may occur in a portion of the quantum-fluid interior of a neutron star. Such a rearrangement is associated with the pronounced softening of the spin-isospin collectiv...
P Blasi,RI Epstein,AV Olinto
P Blasi
The long-held notion that the highest energy cosmic rays are of distant extragalactic origin is challenged by observations that events above approximately 1020 eV do not exhibit the expected high-energy cutoff from photopion production off ...
R Atkins,W Benbow,D Berley et al.
R Atkins et al.
Milagrito, a detector sensitive to very high energy gamma rays, monitored the northern sky from 1997 February through 1998 May. With a large field of view and a high duty cycle, this instrument was well suited to perform a search for TeV ga...
LX Li
LX Li
When some magnetic field lines connect a Kerr black hole with a disk rotating around it, energy and angular momentum are transferred between them. If the black hole rotates faster than the disk, ca&solm0;GMH>0.36 for a thin Keplerian disk, ...
Accretion Rates onto Massive Black Holes in Four Quiescent Elliptical Galaxies [0.03%]
四个宁静椭圆星系中特超大质量黑洞的吸积率研究
JM Wrobel,JR Herrnstein
JM Wrobel
Four quiescent elliptical galaxies were imaged with the NRAO VLA at 8.5 GHz. Within the context of canonical advection-dominated accretion flows (ADAFs), these VLA images plus published black hole masses constrain the accretion rates to be ...
A Direct Distance to the Large Magellanic Cloud Cepheid HV 12198 from the Infrared Surface Brightness Technique [0.03%]
红外亮度技术直接测量大麦哲伦星云造父型变星HV 12198的距离
WP Gieren,J Storm,P Fouqué et al.
WP Gieren et al.
We report on the first application of the infrared surface brightness technique on a Cepheid in the Large Magellanic Cloud, the variable HV 12198 in the young globular cluster NGC 1866. From this one star, we determine a distance modulus of...
Optical Gravitational Lensing Experiment Cepheids Have Lower Amplitudes in the Small Magellanic Cloud than in the Large Magellanic Cloud [0.03%]
小麦哲伦云中的造父型变星振幅较之大麦哲伦云中的要低光学引力透镜实验
B Paczyński,B Pindor
B Paczyński
We selected Cepheids from the Optical Gravitational Lensing Experiment database for the Magellanic Clouds in the period range of 101.1
SS McGaugh,JM Schombert,GD Bothun et al.
SS McGaugh et al.
We explore the Tully-Fisher relation over five decades in stellar mass in galaxies with circular velocities ranging over 30 less, similarVc less, similar300 km s-1. We find a clear break in the optical Tully-Fisher relation: field galaxies ...