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756 papers · 1 filter
Detection of solar-like oscillations from Kepler photometry of the open cluster NGC 6819
Dennis Stello, Sarbani Basu, Hans Bruntt +49
Asteroseismology of stars in clusters has been a long-sought goal because the assumption of a common age, distance and initial chemical composition allows strong tests of the theor…
Measuring the Accreting Stellar and Intermediate Mass Black Hole Populations in the Galaxy and Local Group
Jonathan Grindlay, Didier Barret, Tomaso Belloni +23
The population of stellar black holes (SBHs) in the Galaxy and galaxies generally is poorly known in both number and distribution. SBHs are the fossil record of the massive stars i…
Calibration of the INTEGRAL SPI Anti Coincidence Shield with Gamma Ray Bursts observations
D. Viganò, S. Mereghetti
The Anti Coincidence Shield (ACS) of the INTEGRAL SPI instrument provides an excellent sensitivity for the detection of Gamma Ray Bursts (GRBs) above ~ 75keV, but no directional an…
The quite complex "Simple Stellar Populations" of Globular Clusters
Angela Bragaglia
There is compelling observational evidence that globular clusters (GCs) are quite complex objects. A growing body of photometric results indicate that the evolutionary sequences ar…
Power for dry BL Lacertae objects
A. Paggi, A. Cavaliere, V. Vittorini +1
Is it significant that the intrinsic outputs of several BL Lacs are observed to level off at values of about 10^46 erg s^-1? In searching for an answer, we compare gamma-ray observ…
New Lower Limits on the Lifetime of Heavy Neutrino Radiative Decay
S. Cecchini, D. Centomo, G. Giacomelli +5
The data collected during the 2006 total solar eclipse are analyzed in the search for signals produced by a hypothetical radiative decay of massive neutrinos. In the absence of the…