A Giant Glitch in the Energetic 69 Millisecond X-Ray Pulsar AXS J161730-505505 [0.03%]
X射线脉冲星AXS J161730-505505的巨耀变事件及其高能辐射性质
K Torii,EV Gotthelf,G Vasisht et al.
K Torii et al.
We present new results on the recently discovered 69 ms X-ray pulsar AXS J161730-505505, the sixth youngest example of a rotation-powered pulsar. We have undertaken a comprehensive X-ray-observing campaign of AXS J161730-505505 with the ASC...
Supernovae versus Neutron Star Mergers as the Major r-Process Sources [0.03%]
大r过程来源的 supernova 与中子星并合事件之争
Y Qian
Y Qian
I show that recent observations of r-process abundances in metal-poor stars are difficult to explain if neutron star mergers (NSMs) are the major r-process sources. In contrast, such observations and meteoritic data on 182Hf and 129I in the...
H Mouri,Y Taniguchi
H Mouri
By using the [Fe ii] lambda8617/[O i] lambda6300 flux ratio, we demonstrate that most of the interstellar dust grains survive in shocks associated with supernova remnants and Herbig-Haro objects. The [Fe ii]/[O i] flux ratio is sensitive to...
M Turatto,T Suzuki,PA Mazzali et al.
M Turatto et al.
The extraordinary SN 1997cy associated with GRB 970514 has been observed photometrically and spectroscopically for nearly 2 yr. At the time of discovery, SN 1997cy was the brightest supernova (SN) ever observed (MV
D Zaritsky,J Harris,EK Grebel et al.
D Zaritsky et al.
We compare the distribution of stars of different spectral types, and hence mean age, within the central SMC and find that the asymmetric structures are almost exclusively composed of young main-sequence stars. Because of the relative lack ...
DS Graff,AP Gould
DS Graff
Light-echo measurements show that SN 1987A is 425 pc behind the LMC disk. It is continuing to move away from the disk at 18 km s-1. Thus, it has been suggested that SN 1987A was ejected from the LMC disk. However, SN 1987A is a member of a ...
Chandra X-Ray Observatory Arcsecond Imaging of the Young, Oxygen-rich Supernova Remnant 1E 0102.2-7219 [0.03%]
钱德拉X射线观测卫星对年轻富氧超新星遗迹1E 0102.2-7219的弧秒成像研究
TJ Gaetz,YM Butt,RJ Edgar et al.
TJ Gaetz et al.
We present observations of the young, oxygen-rich supernova remnant 1E 0102.2-7219 taken by the Chandra X-Ray Observatory during its orbital activation and checkout phase. The boundary of the blast-wave shock is clearly seen for the first t...
S Molendi,De Grandi S,R Fusco-Femiano
S Molendi
We present results from a spatially resolved spectral analysis of the merging cluster Abell 2256. The long integration time (135 ks) and the good spatial resolution of the Medium-Energy Concentrator/Spectrometer on board BeppoSAX allow us t...
M Catanese,RM Sambruna
M Catanese
We present X-ray observations of the BL Lacertae object Mrk 501 that were taken with the Rossi X-Ray Timing Explorer in 1998 May as part of a multiwavelength campaign. The X-ray light curve shows a very rapid flare in which the 2-10 keV flu...
On the Role of Irradiation and Evaporation in Strongly Irradiated Accretion Disks in the Black Hole X-Ray Binaries: Toward an Understanding of FREDs and Secondary Maxima [0.03%]
辐照和蒸发在强辐照吸积盘中的作用：对FREDs和次峰的思考（以黑洞X射线双星为研究对象）
JK Cannizzo
JK Cannizzo
We examine a new paradigm to account for the exponential decay seen in the light curves of some of the bright X-ray novae. These systems show an exponential decay in soft X-rays with an e-folding time constant of approximately 30 days. We i...