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63 papers · 1 filter
Constraining the Flaring Region of Sagittarius A* By 1.3mm VLBI Measurements
Lei Huang, Zhi-Qiang Shen, Feng Gao
We use a model of an accretion flow coupled with an emergent flare to interpret the latest 1.3mm VLBI measurements for Sagittarius A*. The visibility data constrained the distances…
VLBI observations of 10 CSO candidates: expansion velocities of hot spots
Tao An, Fang Wu, Jun Yang +11
Observations of ten Compact Symmetric Objects ({\rm CSO}) candidates have been made with the Very Long Baseline Array at 8.4 GHz in 2005 and with a combined Chinese and European VL…
The Bulge Radial Velocity Assay (BRAVA): II. Complete Sample and Data Release
Andrea Kunder, Andreas Koch, R. Michael Rich +13
We present new radial velocity measurements from the Bulge Radial Velocity Assay (BRAVA), a large scale spectroscopic survey of M-type giants in the Galactic bulge/bar region. The…
Black Holes in the Universe: Generalized Lemaitre-Tolman-Bondi Solutions
Changjun Gao, Xuelei Chen, You-Gen Shen +1
We present new exact solutions {which presumably describe} black holes in the background of a spatially flat, pressureless dark matter (DM)-, or dark matter plus dark energy (DM+DE…
Anisotropy in the matter distribution beyond the baryonic acoustic oscillation scale
A. Faltenbacher, Cheng Li, Jie Wang
Tracing the cosmic evolution of the Baryonic Acoustic Oscillation (BAO) scale with galaxy two point correlation functions is currently the most promising approach to detect dark en…
Radiative corrections to the neutron star mass inferred from QPO frequencies
M. A. Abramowicz, W. Kluźniak, W. Yu
The frequencies of kHz QPOs are widely interpreted as being indicative of the values of characteristic frequencies related to orbital motion around neutron stars, e.g., the radial…