S
Sergio A. Cellone
Researcher at National University of La Plata
Publications - 93
Citations - 2027
Sergio A. Cellone is an academic researcher from National University of La Plata. The author has contributed to research in topics: Blazar & Galaxy. The author has an hindex of 24, co-authored 88 publications receiving 1876 citations. Previous affiliations of Sergio A. Cellone include National Scientific and Technical Research Council & ASTRON.
Papers
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Journal ArticleDOI
Optical microvariability of southern agns
TL;DR: In this paper, a search for optical microvariability in a selected sample of 23 southern AGNs, which includes both radio-quiet and radio-loud objects, was conducted.
Journal ArticleDOI
Unveiling the nature of INTEGRAL objects through optical spectroscopy. VI. A multi-observatory identification campaign
N. Masetti,Elena Mason,Lorenzo Morelli,Sergio A. Cellone,Sergio A. Cellone,Vanessa McBride,Eliana Palazzi,L. Bassani,Angela Bazzano,A. J. Bird,P. A. Charles,A. J. Dean,Gaspar Galaz,Neil Gehrels,R. Landi,Angela Malizia,Dante Minniti,Francesca Panessa,Gustavo E. Romero,Gustavo E. Romero,John B. Stephen,Pietro Ubertini,R. Walter +22 more
TL;DR: Using 8 telescopes in the northern and southern hemispheres, plus archival data from two on-line sky surveys, the authors performed a systematic optical spectroscopic study of 39 putative counterparts of unknown hard X-ray sources in order to determine or at least better assess their nature.
Journal ArticleDOI
The intriguing nature of the high-energy gamma ray source XSS J12270-4859
D. de Martino,Maurizio Falanga,Jean-Marc Bonnet-Bidaud,T. M. Belloni,M. Mouchet,N. Masetti,Ileana Andruchow,Sergio A. Cellone,Koji Mukai,Giorgio Matt +9 more
TL;DR: In this article, a broad-band X-ray and gamma ray study of the hard source XSS J12270-4859 is presented, based on a recent XMM-Newton observation and archival INTEGRAL and RXTE data.
Journal ArticleDOI
The intriguing nature of the high energy gamma ray source XSSJ12270-4859
D. de Martino,M. Falanga,Jean-Marc Bonnet-Bidaud,T. M. Belloni,M. Mouchet,N. Masetti,Ileana Andruchow,Sergio A. Cellone,Koji Mukai,Giorgio Matt +9 more
TL;DR: In this article, a broad-band X-ray and gamma ray study based on a recent XMM-Newton observation and archival INTEGRAL and RXTE data is presented.
Journal ArticleDOI
Optical microvariability of EGRET blazars
TL;DR: In this article, the authors present results of a photometric CCD study of the incidence of microvariability in the optical emission of a sample of 20 blazars detected at gamma-ray energies by the EGRET instrument of the Compton Gamma-Ray Observatory.