M Wardle,M Walker
M Wardle
We consider the thermal properties of cold, dense clouds of molecular hydrogen and atomic helium. For cloud masses below 10-1.7 M middle dot in circle, the internal pressure is sufficient to permit the existence of particles of solid or liq...
IN Reid,JD Kirkpatrick,JE Gizis et al.
IN Reid et al.
We report the detection of an Halpha flare on the low-luminosity M9.5 dwarf BRI 0021-0214. This star has rapid rotation, vsin&parl0;i&parr0; approximately 40 km s-1, but generally shows no significant chromospheric emission. Our detection o...
Upper Limits on the Continuum Emission from Geminga at 74 and 326 MHz [0.03%]
_geminga在74和326MHz的连续谱辐射上限
NE Kassim,TJ Lazio
NE Kassim
We report a search for radio continuum emission from the gamma-ray pulsar Geminga. We have used the VLA to image the location of the optical counterpart of Geminga at 74 and 326 MHz. We detect no radio counterpart. We derive upper limits to...
E Livne
E Livne
Delayed detonation in an exploding white dwarf, which propagates from an off-center transition point rather than from a spherical transition shell, is described and simulated. The differences between the results of two-dimensional simulatio...
F Halzen,DW Hooper
F Halzen
We recalculate the diffuse flux of high-energy neutrinos produced by gamma-ray bursts in the relativistic fireball model. Although we confirm that the average single burst produces only approximately 10-2 high-energy neutrino events in a de...
F Brighenti,WG Mathews
F Brighenti
Anticipating forthcoming Chandra X-ray observations, we describe the continuation of interstellar cooling flows deep into the cores of elliptical galaxies. Interstellar gas heated to T>1 keV in the potential of massive black holes (r less, ...
EM Schlegel
EM Schlegel
Optical spectra of SN 1994W in NGC 4041 revealed the presence of a dense (Ne>108 cm-3) circumstellar shell. An observation with the ROSAT High-Resolution Imager detected a source, with a luminosity of approximately 8x1039 ergs s-1, coincide...
The Mass Function of Young Star Clusters in the "Antennae" Galaxies [0.03%]
天炉座相互作用星系团状年轻星团的 masses函数
Q Zhang,SM Fall
Q Zhang
We determine the mass function of young star clusters in the merging galaxies known as the "Antennae" (NGC 4038/9) from deep images taken with the Wide Field Planetary Camera 2 on the refurbished Hubble Space Telescope. This is accomplished...
Reobserving the Extreme-Ultraviolet Emission from Abell 2199: In Situ Measurement of Background Distribution by Offset Pointing [0.03%]
重新观测Abell 2199团簇的极紫外辐射：通过偏置指向测量背景分布
R Lieu,M Bonamente,JP Mittaz et al.
R Lieu et al.
The EUV excess emission from the clusters A2199 and A1795 remains an unexplained astrophysical phenomenon. There has been many unsuccessful attempts to "trivialize" the findings. In this Letter, we present direct evidence proving that the m...
A First Comparison of the Surface Brightness Fluctuation Survey Distances with the Galaxy Density Field: Implications for H0 and Omega [0.03%]
表面亮度涨落距离与星系密度场的首次比较：对H0和Ω的影响
JP Blakeslee,M Davis,JL Tonry et al.
JP Blakeslee et al.
We compare the peculiar velocities measured in the surface brightness fluctuation survey of galaxy distances with the predictions from the density fields of the IRAS 1.2 Jy flux-limited redshift survey and the optical redshift survey (ORS) ...