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43 papers · 1 filter
The VIMOS Public Extragalactic Redshift Survey (VIPERS). Hierarchical scaling and biasing
A. Cappi, F. Marulli, J. Bel +47
We investigate the higher-order correlation properties of the VIMOS Public Extragalactic Redshift Survey (VIPERS) to test the hierarchical scaling hypothesis at z~1 and the depende…
WISE colours and star-formation in the host galaxies of radio-loud narrow-line Seyfert 1
A. Caccianiga, S. Anton, L. Ballo +7
We investigate the mid-infrared properties of the largest (42 objects) sample of radio-loud narrow-line Seyfert 1 (RL NLS1) collected to date, using data from the Wide-field Infrar…
Parent population of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies
Marco Berton, Luigi Foschini, Stefano Ciroi +7
Flat-spectrum radio-loud Narrow-Line Seyfert 1 galaxies (NLS1s) are a recently discovered class of -ray emitting Active Galactic Nuclei (AGN), that exhibit some blazar-like prop…
Proving strong magnetic fields near to the central black hole in the quasar PG0043+039 via cyclotron lines
W. Kollatschny, N. Schartel, M. Zetzl +3
The optical luminous quasar PG0043+039 has not been detected before in deep X-ray observations indicating the most extreme optical-to-X-ray slope index of all quasars. Thi…
Swift J201424.9+152930: discovery of a new deeply eclipsing binary with 491 s and 3.4 h modulations
P. Esposito, G. L. Israel, D. de Martino +13
We report on the discovery of a new X-ray pulsator, Swift J201424.9+152930 (Sw J2014). Owing to its X-ray modulation at 491 s, it was discovered in a systematic search for coherent…
Comparing halo bias from abundance and clustering
Kai Hoffmann, Julien Bel, Enrique Gaztanaga
We model the abundance of haloes in the volume of the MICE Grand Challenge simulation by fitting the universal mass function with an improved Jack-Knife…