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104 papers · 1 filter
Spectropolarimetry of a decaying sunspot penumbra
L. R. Bellot Rubio, A. Tritschler, V. Martinez Pillet
We report on high angular resolution, high precision spectropolarimetric measurements of a decaying sunspot. The spot gradually lost its penumbra during the course of three days. I…
On the nature of outflows in intermediate-mass protostars: a case study of IRAS 20050+2720
M. T. Beltran, R. Estalella, J. M. Girart +2
Context. This is the third of a series of papers devoted to study in detail and with high-angular resolution intermediate-mass molecular outflows and their powering sources. Aims.…
A numerical study of Penrose-like inequalities in a family of axially symmetric initial data
J. L. Jaramillo, N. Vasset, M. Ansorg
Our current picture of black hole gravitational collapse relies on two assumptions: i) the resulting singularity is hidden behind an event horizon -- weak cosmic censorship conject…
A Multiple System of Radio Sources at the Core of the L723 Multipolar Outflow
Carlos Carrasco-Gonzalez, Guillem Anglada, Luis F. Rodriguez +3
We present high angular resolution Very Large Array multi-epoch continuum observations at 3.6 cm and 7 mm towards the core of the L723 multipolar outflow revealing a multiple syste…
Fate of gravitational collapse in semiclassical gravity
Carlos Barcelo, Stefano Liberati, Sebastiano Sonego +1
While the outcome of gravitational collapse in classical general relativity is unquestionably a black hole, up to now no full and complete semiclassical description of black hole f…
The Afterglows of Swift-era Gamma-Ray Bursts. I. Comparing pre-Swift and Swift era Long/Soft (Type II) GRB Optical Afterglows
D. A. Kann, S. Klose, B. Zhang +73
We have gathered optical photometry data from the literature on a large sample of Swift-era gamma-ray burst (GRB) afterglows including GRBs up to September 2009, for a total of 76…