Curriculum Vitae - Dipartimento di Fisica

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Scientific interests The main topics of my research activity are in General Relativity, astrophysical sources of gravitational waves, gamma-ray bursts, physics of black holes, dark Matter in galaxies, micro-lensing and pixel-lensing as tools to map galactic dark matter, astrophysics of massive black holes hosted in AGNs and QSOs, Optical and X-ray data analysis, timing analysis. In particular: Astrophysics of the gravitational wave sources • Emission of Gravitational Waves from Relativistic Clusters • Expansion of Gravitational Waves from Binary Systems • Gravitational wave amplification by microlensing events • Gravitational waves emitted by colliding objects Astrophysics of the gravitational lensing effect • Astrophysical implication of the amplification of gravitational waves by intervening objects • Retro-lensing effect and application to Kerr black holes and the binary system SgrA*-S2 • Micro-lensing and Pixel-lensing towards LMC, SMC and M31 as a tool to map the amount of dark matter Electrodynamics of spinning systems and astrophysics of pulsars • Effect of the gravitational field on the induced charge distribution of pulsar Astrophysics of the central regions of the galaxies and of the compact objects • Galaxies, galactic cores and BL lacertae objects as host galaxies of super massive black holes possibly in binary systems • Study of the possibility that centrifugal force or accreting processes may induce collapse of white dwarf or neutron stars to stellar mass black holes. • Ultraviolet emission toward cluster of galaxies
• General Relativistic effects around peculiar objects as naked singularities and usual Schwarzschild and Kerr black holes • P.I. of an XMM Newton telescope observation toward the MACHO microlensing candidate MACHO BLG-95. This peculiar microlensing candidate event has been characterized by a long enough duration which allowed to use parallax methods in order to get information about the lens distance. Hence, an estimate of the lens mass has been obtained. In particular, MACHO BLG-95 seems to be an object with mass 3-10 solar masses at a distance 2-6 kpc from Earth. The unusual huge mass of the lens opens the possibility that MACHO BLG-95 is an isolated neutron star or a stellar mass black hole. In both cases, we expect that the object accretes the surrounding interstellar matter (for example via Bondi accretion mechanism) and emits radiation in the X-ray band. The expected X-ray is 10 −15 cgs, so that we have requested, and obtained, observing time (100 ks) with the XMM Newton telescope. Several X ray sources have been identified and are now under study. The data analysis performed on both the EPIC PN and EPIC MOS images allowed us to put an upper limit to the X-ray of 10 −15 cgs coming from the source so that strong constraints on the Black Hole accretion mechanism can be put. At present, I’m studying the physics of obscured AGNs from the observational (XMM-RGS data) point of view and dedicate part of my time in analyzing XMM data of serendipitous sources. In particular, I’m interesting in Low-mass X-ray binaries, i.e. peculiar binary systems composed of a compact object and a low-mass star. Recently, a new class of these systems, known as symbiotic X-ray binaries (with a neutron star with a M-type giant companion), has been discovered. Up to now, only a few objects (three or four) of this kind are known. We have possibly discovered one of the best candidate. Other interests in the use of XMM data are in the study of intermediate-mass black holes (IMBHs) and cataclysmic variables (CVs). Cosmology • I was involved in the VST (Very Large Telescope Survey Telescope) project which will undergo a survey of the sky up to the magnitude 24. For the collaboration, I developed programs (C and IDL) to simulate deep field images useful for the pipeline analysis. The code is still under development. Membership • INFN associate (Istituto Nazionale di Fisica Nucleare).
Page 1 and 2: Curriculum Vitae Achille A. Nucita
Page 3: 4/2007 Post. Doc. Fellowship at Eur
Page 7 and 8: • M. Hafizi, F. De Paolis, G. Ing
Page 9 and 10: • S. Capozziello, M.F. DeLaurenti
Page 11 and 12: Astro- and Particle Physics” (DAR
Page 13 and 14: • A.A. Nucita, Astrophysics of th
Page 15 and 16: • Teacher assistant for the Cours
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Curriculum Vitae - Dipartimento di Fisica

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