Zobrazeno 1 - 10
of 117
pro vyhledávání: '"C. Perola"'
Autor:
F. Pompilio, Xavier Barcons, Luigi Danese, D. Rigopoulou, Steve Serjeant, Carlotta Gruppioni, F. La Franca, Fabrizio Fiore, Andreas Efstathiou, Alberto Franceschini, Giorgio Matt, P. Heraudeau, R. Della Ceca, M. Perri, G. C. Perola, Paolo Ciliegi, David M. Alexander, Michael Rowan-Robinson, S. J. Oliver, Anna Wolter, I. Matute
We present BeppoSAX observations of the southern S1 region in the European Large-Area Infrared Space Observatory (ISO) Survey (ELAIS). These observations cover an area of similar to1.7 deg(2) and reach an on-axis (similar to0.7 deg(2)) 2-10 keV (hard
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f21498b7c180b9cf6e60f376a771f70
https://ora.ox.ac.uk/objects/uuid:9c126ed0-ff3f-4c01-8e58-b55b56456814
https://ora.ox.ac.uk/objects/uuid:9c126ed0-ff3f-4c01-8e58-b55b56456814
Autor:
Fabrizio Fiore, G. C. Perola, Fabrizio Nicastro, Simonetta Puccetti, Guido Risaliti, M. Capalbi, M. Elvis
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 377:607-616
We have analyzed the two longest (elapsed time > 3 days) BeppoSAX observations of the X-ray brightest Seyfert galaxy, NGC 4151, to search for spectral variability on time-scales from a few tens of ksec to years. We found in both cases highly signific
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bcf278db87c7508574d5eafa0d64c9e
https://doi.org/10.1111/j.1365-2966.2007.11634.x
https://doi.org/10.1111/j.1365-2966.2007.11634.x
Publikováno v:
Astronomy & Astrophysics. 443:1-10
The surface brightness produced by synchrotron radiation in Clusters of Galaxies with a radio-halo sets a degenerate constraint on the magnetic field strength, the relativistic electron density and their spatial distributions. Using the Coma radio-ha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66a175b727a8a9fc4669e44c186dfb02
https://doi.org/10.1051/0004-6361:20042077
https://doi.org/10.1051/0004-6361:20042077
Autor:
C. Cabanac, Gilles Henri, A.-M. Dumont, P. O. Petrucci, S. Collin, Francesco Haardt, Laura Maraschi, Giorgio Matt, P. Ferrando, Martine Mouchet, C. Perola, L. Koch-Miramond
Publikováno v:
Nuclear Physics B Proceedings Supplements
Nuclear Physics B Proceedings Supplements, 2004, 132, pp.213-216. ⟨10.1016/j.nuclphysbps.2004.04.036⟩
Nuclear Physics B Proceedings Supplements, 2004, 132, pp.213-216. ⟨10.1016/j.nuclphysbps.2004.04.036⟩
Mkn 841 has been observed simultaneously by XMM and BeppoSAX in January 2001. Due to operational contingency, the 30ks XMM observation was split into two parts, separated by about 15 hours. We first report the presence of a narrow iron line which app
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a47f7d198834a804dec85c10e873c73f
https://doi.org/10.1016/j.nuclphysbps.2004.04.036
https://doi.org/10.1016/j.nuclphysbps.2004.04.036
Publikováno v:
Astronomy & Astrophysics. 413:895-902
We present the broad band analysis of two BeppoSAX observations of the Sy 1 Mkn509. In 2000 the source was in a typical flux state, F{2-10keV}=2.7x10^{-11}erg cm^{-2} s^{-1}, while in 1998 it was found in a high flux state, F{2-10keV}=5.7x10^{-11} er
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::129fbb1abb825ddf1ad751125e2a75fd
https://doi.org/10.1051/0004-6361:20034050
https://doi.org/10.1051/0004-6361:20034050
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 341:953-960
We report the spectral analysis of a long XMM-Newton observation of the well-studied, moderate luminosity Broad Line Seyfert 1 galaxy NGC 5548. The source was at an historically average brightness and we find the hard (3-10 keV) spectrum can be well
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3781cc05b0f3fbc59ee28e2cdd6bb3f
https://doi.org/10.1046/j.1365-8711.2003.06470.x
https://doi.org/10.1046/j.1365-8711.2003.06470.x
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 327:323-328
We have studied the correlation among X-ray absorption, optical reddening and nuclear dust morphology in Seyfert 2 galaxies. Two main conclusions emerge: (i) the Balmer decrement and the amount of X-ray absorption are anticorrelated over a wide range
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f517098cd1415084a48fc17e2b1aa99
https://doi.org/10.1046/j.1365-8711.2001.04710.x
https://doi.org/10.1046/j.1365-8711.2001.04710.x
Autor:
A. A. Zdziarski, Andrea Santangelo, A. N. Parmar, S. Del Sordo, Mauro Orlandini, G. Cusumano, G. C. Perola, L. Piro, F. Frontera, Francesco Haardt, D. Dal Fiume, A. Segreto, Aldo Treves, L. Chiappetti, M. Trifoglio, E. Palazzi
Publikováno v:
The Astrophysical Journal. 546:1027-1037
We report on the 0.5--200 keV spectral properties of Cyg X-1 observed at different epochs with the Narrow Field Instruments of the BeppoSAX satellite. The source was in its soft state during the first observation of 1996 June. In the second observati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c4a21f835364640feadf3724ad09e7a
https://doi.org/10.1086/318304
https://doi.org/10.1086/318304
Autor:
J. W. den Herder, L. Piro, T. Ohashi, L. Amati, J. Atteia, S. Barthelmy, M. Barbera, D. Barret, S. Basso, M. Boer, O. Boyarskiy, E. Branchini, G. Branduardi Raymont, M. Briggs, G. Brunetti, C. Budtz Jorgensenf, D. Burrows, S. Campana, E. Caroli, G. Chincarini, F. Christensen, M. Cocchi, A. Comastri, A. Corsi, V. Cotroneo, P. Conconi, L. Colasanti, G. Cusamano, A. de Rosa, M. Del Santo, S. Ettori, Y. Ezoe, L. Ferrari, M. Feroci, M. Finger, G. Fishman, R. Fujimoto, M. Galeazzi, A. Galli, F. Gatti, N. Gehrels, B. Gendre, G. Ghirlanda, G. Ghisellini, P. Giommi, L. Guzzo, F. Haardt, I. Hepburn, W. Hermsen, H. Hoevers, A. Holland, J. In't Zand, Y. Ishisaki, H. Kawahara, N. Kawai, J. Kaastra, M. Kippen, P. A. J. de Korte, C. Kouveliotou, A. Kusenko, C. Labanti, R. Lieu, C. Macculi, K. Makishima, G. Matt, P. Mazotta, D. McCammon, M. Mendez, T. Mineo, S. Mitchell, K. Mitsuda, S. Molendi, L. Moscardini, R. Mushotzky, L. Natalucci, F. Nicastro, P. O'Brien, J. Osborne, F. Paerels, M. Page, S. Paltani, G. Pareschi, E. Perinati, C. Perola, T. Ponman, A. Rasmussen, M. Roncarelli, P. Rosati, O. Ruchayskiy, E. Quadrini, I. Sakurai, R. Salvaterra, S. Sasaki, G. Sato, J. Schaye, J. Schmidtt, S. Scioritino, M. Shaposhnikov, K. Shinozaki, D. Spiga, Y. Suto, G. Tagliaferri, T. Takahashi, Y. Takei, Y. Tawara, P. Tozzi, H. Tsunemi, T. Tsuru, P. Ubertini, E. Ursino, M. Viel, J. Vink, N. White, R. Willingale, R. Wijers, K. Yoshikawa, N. Yamasaki, BORGANI, STEFANO, GIRARDI, MARISA
How structures of various scales formed and evolved from the early Universe up to present time is a fundamental question of astrophysics. EDGE will trace the cosmic history of the baryons from the early generations of massive stars by Gamma-Ray Burst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::a6de28848cbb31e4210a4cfe7bf98487
http://hdl.handle.net/11368/2634404
http://hdl.handle.net/11368/2634404
Autor:
G. Fossati, P. Grandi, A. Celotti, A. Treves, G. Ghisellini, L. Maraschi, G. Tagliaferri, L. Bassani, F. Frontera, G. Malaguti, L. Nicastro, E. Pian, L. Chiappetti, E.G. Tanzi, S. Giarrusso, M. Guainazzi, P. Padovani, C. Perola, C. Raiteri, M. Villata, M. Salvati, W. Brinkmann, W. Paciesas, R. Sambruna, M. Sikora, R. Staubert, M.C. Urry, S. Wagner, F. Haardt
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 69:449-452
We present preliminary results of BeppoSAX AO1 observations of 3C 273 performed in January 1997. We also present a close comparison with data obtained during the satellite SVP, in July 1996. On average, the AO1 flux is about a factor 2 higher than th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::892b01c2379e34b334e20e4729dfa81f
https://doi.org/10.1016/s0920-5632(98)00260-6
https://doi.org/10.1016/s0920-5632(98)00260-6