Maurizio Paolillo

  • Citations Per Year
Learn More
Nowadays, many scientific areas share the same need of being able to deal with massive and distributed datasets and to perform on them complex knowledge extraction tasks. This simple consideration is behind the international efforts to build virtual organizations such as, for instance, the Virtual Observatory (VObs). DAME (DAta Mining & Exploration) is an(More)
We investigate morphological structure parameters and local environments of distant moderateluminosity active galactic nucleus (AGN) host galaxies in the overlap between the HST/ACS observations of the Great Observatories Origins Deep Survey (GOODS) and the two Chandra Deep Fields. We compute near-neighbor counts and BV iz asymmetry (A) and concentration(More)
CSL-1 is a peculiar object (R.A.2000 = 12 h 23 30”5; δ2000 = −12 ◦ 38 57”0) which, for its photometric and spectroscopic properties, is possibly the first case of gravitational lensing by a cosmic string. In this paper we present additional evidences, based on medium-high resolution VLT + FORS1 observations, that the spectra of the two components of CSL-1(More)
We present an X-ray investigation of the elliptical galaxy NGC 507 in the Pisces cluster. We make use of archival Rosat HRI and Chandra data, and of previously published PSPC data, to connect the large-scale structure of the halo to the core morphology. Our analysis, based on a bidimensional double Beta model of the halo surface brightness, shows that the(More)
We present point-source catalogs for the 2Ms exposure of the ChandraDeep FieldYSouth (CDF-S); this is one of the two most sensitive X-ray surveys ever performed. The survey covers an area of 436 arcmin and reaches on-axis sensitivity limits of 1:9 ; 10 17 and 1:3 ; 10 16 ergs cm 2 s 1 for the 0.5Y2.0 and 2Y8 keV bands, respectively. Four hundred and(More)
Using early data from the Infrared Array Camera (IRAC) on the Spitzer Space Telescope, taken for the Great Observatories Origins Deep Survey (GOODS), we identify and study objects that are well-detected at 3.6μm, but are very faint (and in some cases, invisible) in the Hubble Ultra Deep Field (HUDF) ACS and NICMOS images and in very deep VLT Ks-band(More)
We analyze a new gravitational lens OAC–GL J1223–1239, serendipitously found in a deep I814-band image of the Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS). The lens is an L∗, edge-on S0 galaxy at zl = 0.4656. The gravitational arc has a radius of 0. ′′42 1.74h−1 kpc. We have determined the total mass and the dark matter (DM) fraction(More)
In this review paper the current understanding on the properties of cosmic strings is shortly outlined with special emphasis on the observational signatures which can be expected both in the optical, through gravitational lensing, and in the radio, through anisotropies in the cosmic microwave background. The experience gathered during the long term(More)
We perform a combined X-ray and strong lensing analysis of RX J1347.5-1145, one of the most luminous galaxy clusters at X-ray wavelengths. We show that evidence from strong lensing alone, based on published VLT and new HST data, strongly argues in favor of a complex structure. The analysis takes into account arc positions, shapes and orientations and is(More)