Catálogo de publicaciones - revistas

<jats:p> Robertson <jats:italic>et al</jats:italic> . (Reports, 25 July 2014, p. 440) claimed that activity-induced variability is responsible for the Doppler signal of the proposed planet candidate GJ 581d. We point out that their analysis using periodograms of residual data is inappropriate and promotes inadequate tools. Because the claim challenges the viability of the method to detect exo-Earths, we encourage reanalysis and a deliberation on what the field-standard methods should be. </jats:p>

<jats:p>Anglada-Escudé and Tuomi question the statistical rigor of our analysis while ignoring the stellar activity aspects that we present. Although we agree that improvements in multiparametric radial velocity (RV) modeling are necessary for the detection of Earth-mass planets, the key physical points we raised were not challenged. We maintain that activity on Gliese 581 induces RV shifts that were interpreted as exoplanets.</jats:p>

<jats:p>GENERAL RELATIVITY TURNS 100</jats:p>

<jats:p>After decades of work, physicists say they are a year or two away from detecting ripples in spacetime.</jats:p>

<jats:p>In the century since Einstein formulated general relativity, scientists have built on his theory, with developments that were groundbreaking, tragic, and just plain strange.</jats:p>

<jats:p>To put general relativity to the acid test, researchers are looking inward—toward the supermassive black hole at the center of the Milky Way.</jats:p>