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29 papers · 1 filter
Investigating Galactic binary cluster candidates with Gaia EDR3
M. S. Angelo, J. F. C. Santos, F. F. S. Maia +1
A number of stellar open cluster (OC) pairs in the Milky Way occupy similar positions in the phase space (coordinates, parallax and proper motions) and therefore may constitute phy…
BEBOP III. Observations and an independent mass measurement of Kepler-16 (AB) b -- the first circumbinary planet detected with radial velocities
Amaury H. M. J. Triaud, Matthew R. Standing, Neda Heidari +30
The radial velocity method is amongst the most robust and most established means of detecting exoplanets. Yet, it has so far failed to detect circumbinary planets despite their rel…
Flickering around the outburst cycle in Kepler dwarf novae
Albert Bruch
Taking advantage of the unparallel quantity and quality of high cadence Kepler light curves of several dwarf novae, the strength of the flickering and the high frequency spectral i…
Thermodynamics of Einstein-Aether Black Holes
R. Chan, M. F. A. da Silva, V. H. Satheeshkumar
We analyze several spherically symmetric exterior vacuum solutions allowed by the Einstein-Aether (EA) theory with a non static aether and study the thermodynamics of their Killing…
Temperature Discrepancy with Photoionization Models of the Narrow Line Region
Luc Binette, Montserrat Villar Martín, Gladis Magris C. +4
Using published work on the Narrow Line Region of Active Nuclei, we make a comparison of the observed [O III] ratio observed among quasars, Seyfert 2's and spatially…
A model-independent test of speed of light variability with cosmological observations
Gabriel Rodrigues, Carlos Bengaly
A powerful test of fundamental physics consists on probing the variability of fundamental constants in Nature. Although they have been measured on Earth laboratories and in our Sol…