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24 papers · 1 filter
A new method to determine large scale structure from the luminosity distance
Antonio Enea Romano, Hsu-Wen Chiang, Pisin Chen
The luminosity distance can be used to determine the properties of large scale structure around the observer. To this purpose we develop a new inversion method to map luminosity di…
Ancient human genomes suggest three ancestral populations for present-day Europeans
Iosif Lazaridis, Nick Patterson, Alissa Mittnik +117
We sequenced genomes from a 7,000 year old early farmer from Stuttgart in Germany, an 8,000 year old hunter-gatherer from Luxembourg, and seven 8,000 year old hun…
Non perturbative effects of primordial curvature perturbations on the apparent value of a cosmological constant
Antonio Enea Romano, Sergio Sanes, Misao Sasaki +1
We study effects on the luminosity distance of a local inhomogeneity seeded by primordial curvature perturbations of the type predicted by the inflationary scenario and constrained…
The Impending Demise of Comet C/2012 S1 ISON
Ignacio Ferrin
We present evidence to conclude that comet C/2012 S1 ISON is about to turn off or disintegrate.
Magnetic shielding of exomoons beyond the circumplanetary habitable edge
René Heller, Jorge I. Zuluaga
With most planets and planetary candidates detected in the stellar habitable zone (HZ) being super-Earths and gas giants, rather than Earth-like planets, we naturally wonder if the…
Innermost Stable Circular Orbits and Epicyclic Frequencies Around a Magnetized Neutron Star
Andres F. Gutierrez-Ruiz, Cesar A. Valenzuela-Toledo, Leonardo A. Pachon
A full-relativistic approach is used to compute the radius of the innermost stable circular orbit (ISCO), the Keplerian, frame-dragging, precession and oscillation frequencies of t…