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Featured researches published by V. Re.


Physical Review D | 2011

Localization of gravitational wave sources with networks of advanced detectors

S. Klimenko; G. Vedovato; M. Drago; G. Mazzolo; Guenakh Mitselmakher; C. Pankow; G. A. Prodi; V. Re; F. Salemi; I. Yakushin

Coincident observations with gravitational wave (GW) detectors and other astronomical instruments are among the main objectives of the experiments with the network of LIGO, Virgo, and GEO detectors. They will become a necessary part of the future GW astronomy as the next generation of advanced detectors comes online. The success of such joint observations directly depends on the source localization capabilities of the GW detectors. In this paper we present studies of the sky localization of transient GW sources with the future advanced detector networks and describe their fundamental properties. By reconstructing sky coordinates of ad hoc signals injected into simulated detector noise, we study the accuracy of the source localization and its dependence on the strength of injected signals, waveforms, and network configurations.


Physical Review D | 2012

Multimessenger Science Reach and Analysis Method for Common Sources of Gravitational Waves and High-energy Neutrinos

B. Baret; I. Bartos; B. Bouhou; E. Chassande-Mottin; A. Corsi; Irene Di Palma; C. Donzaud; M. Drago; C. Finley; G. Jones; Sergey Klimenko; A. Kouchner; S. Márka; Zsuzsa Marka; L. Moscoso; M. A. Papa; T. Pradier; G. A. Prodi; P. Raffai; V. Re; J. Rollins; F. Salemi; Patrick J. Sutton; M. Tse; Véronique Van Elewyck; G. Vedovato

We present the baseline multimessenger analysis method for the joint observations of gravitational waves (GW) and high-energy neutrinos (HEN), together with a detailed analysis of the expected science reach of the joint search. The analysis method combines data from GW and HEN detectors, and uses the blue-luminosity-weighted distribution of galaxies. We derive expected GW+HEN source rate upper limits for a wide range of source parameters covering several emission models. Using published sensitivities of externally triggered searches, we derive joint upper limit estimates both for the ongoing analysis with the initial LIGO-Virgo GW detectors with the partial IceCube detector (22 strings) HEN detector and for projected results to advanced LIGO-Virgo detectors with the completed IceCube (86 strings). We discuss the constraints these upper limits impose on some existing GW+HEN emission models.


Gravitational wave and particle astrophysics detectors | 2004

The Status of GEO600

K. A. Strain; B. Allen; P. Aufmuth; C. Aulbert; S. Babak; R. Balasubramanian; B. Barr; Steven J. Berukoff; Alexander Bunkowski; G. Cagnoli; C. A. Cantley; M. M. Casey; S. Chelkowski; D. Churches; T. Cokelaer; C. N. Colacino; D. R. M. Crooks; Curt Cutler; Karsten Danzmann; R. Davies; R. J. Dupuis; E. J. Elliffe; Carsten Fallnich; A. Franzen; A. Freise; S. Gossler; A. Grant; H. Grote; S. Grunewald; J. Harms

The GEO 600 laser interferometer with 600m armlength is part of a worldwide network of gravitational wave detectors. GEO 600 is unique in having advanced multiple pendulum suspensions with a monolithic last stage and in employing a signal recycled optical design. This paper describes the recent commissioning of the interferometer and its operation in signal recycled mode.


Classical and Quantum Gravity | 2015

Regression of Environmental Noise in LIGO Data

V. Tiwari; M. Drago; Valery Frolov; Sergey Klimenko; Guenakh Mitselmakher; V. Necula; G. A. Prodi; V. Re; F. Salemi; G. Vedovato; I. Yakushin

We address the problem of noise regression in the output of gravitational-wave (GW) interferometers, using data from the physical environmental monitors (PEM). The objective of the regression analysis is to predict environmental noise in the gravitational-wave channel from the PEM measurements. One of the most promising regression method is based on the construction of Wiener-Kolmogorov filters. Using this method, the seismic noise cancellation from the LIGO GW channel has already been performed. In the presented approach the Wiener-Kolmogorov method has been extended, incorporating banks of Wiener filters in the time-frequency domain, multi-channel analysis and regulation schemes, which greatly enhance the versatility of the regression analysis. Also we presents the first results on regression of the bi-coherent noise in the LIGO data.


Physical Review D | 2014

Prospects for intermediate mass black hole binary searches with advanced gravitational-wave detectors

G. Mazzolo; F. Salemi; M. Drago; V. Necula; C. Pankow; G. A. Prodi; V. Re; V. Tiwari; G. Vedovato; I. Yakushin; Sergey Klimenko

We estimated the sensitivity of the upcoming advanced ground-based gravitational-wave observatories (the LIGO, Virgo, and KAGRA interferometers) to coalescing intermediate mass black hole binaries (IMBHB). We added waveforms modeling the gravitational radiation emitted by IMBHBs to simulated data from detectors and searched for the injected signals with the coherent WaveBurst algorithm. The tested parameter space of the binaries covers nonspinning IMBHBs with source-frame total masses between 50 and 1050M⊙ and mass ratios between 1=6 and 1. We found that advanced detectors could be sensitive to these systems up to a range of a few Gpc. A theoretical model was adopted to estimate the expected observation rates, yielding up to a few tens of events per year. Thus, our results indicate that advanced detectors will have a reasonable chance to collect the first direct evidence for intermediate mass black holes and to open a new, intriguing channel for probing the Universe over cosmological scales.

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I. Yakushin

California Institute of Technology

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C. Pankow

University of Florida

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V. Necula

University of Florida

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