Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Santina Piraino"'
Autor:
Andrea Santangelo, Santina Piraino, Lorenzo Natalucci, P. Ubertini, Fiamma Capitanio, M. Cocchi, M. Del Santo
Publikováno v:
Astronomy & Astrophysics. 411:L395-L398
The bright low-mass X-ray binary Cyg X-2 was in the field of view of the IBIS telescope during the early Cygnus region observations, executed during the INTEGRAL Performance Verification Phase. The data presented are spanning about one week and cover
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::561d7be61f0ce8c28744217648743d76
https://doi.org/10.1051/0004-6361:20031421
https://doi.org/10.1051/0004-6361:20031421
Publikováno v:
The Astrophysical Journal. 567:1091-1101
We report on a joint BeppoSAX/RXTE observation of the Z-type low-mass X-ray binary Cyg X-2. The source was in the so-called high overall intensity state and in less than 24 hr went through all three branches of the Z track. The continuum X-ray spectr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0116a9d508bd018719a03ad35026202
https://doi.org/10.1086/338037
https://doi.org/10.1086/338037
Publikováno v:
The Astrophysical Journal. 523:197-202
We have discovered an x-ray source, SAX J0635+0533, with a hard spectrum within the error box of the GeV gamma-ray source in Monoceros, 2EG J0635+0521. The unabsorbed x-ray flux is 1.2*10^-11 erg cm^-2 s^-1 in the 2-10 keV band. The x-ray spectrum is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b24324432668b0f632319d7b9ed549a
https://doi.org/10.1086/307711
https://doi.org/10.1086/307711
Autor:
G. Cusumano, Mauro Orlandini, D. Dal Fiume, S. Del Sordo, Santina Piraino, A. Segreto, Andrea Santangelo, Arvind Parmar
Publikováno v:
Scopus-Elsevier
Broad-band observation of galactic X-ray binary pulsars is one of the main scientific goal of the BeppoSAX mission. In this framework a key role is played by Pulse Phase Resolved Spectroscopy. In the paper we present some preliminary results on both
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f948b0a8dcd6a77d3cddfde045bae1bb
https://doi.org/10.1016/s0920-5632(98)00199-6
https://doi.org/10.1016/s0920-5632(98)00199-6
Autor:
Eric C. Ford, J. E. Grindlay, Andrea Santangelo, Peter F. Bloser, Alan P. Smale, W. W. Zhang, P. Kaaret, Santina Piraino
Publikováno v:
Astrophysical Journal, 520, L37-L40. IOP Publishing Ltd.
The behavior of quasi-periodic oscillations (QPOs) at frequencies near 1 kHz in the x-ray emission from the neutron star x-ray binary 4U1820-30 has been interpreted as evidence for the existence of the marginally stable orbit, a key prediction of str
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9fa7cc421de292fa123e467a89eff4ed
https://dare.uva.nl/personal/pure/en/publications/strong-field-gravity-and-xray-observations-of-4u182030(397e41c4-35bf-4730-bd12-d00dc13299c5).html
https://dare.uva.nl/personal/pure/en/publications/strong-field-gravity-and-xray-observations-of-4u182030(397e41c4-35bf-4730-bd12-d00dc13299c5).html
Autor:
Sandro Mereghetti, Luciano Burderi, Mauro Orlandini, A. N. Parmar, J. van Paradijs, D. Ricci, Sergio Campana, Lorella Angelini, M. Vietri, D. Dal Fiume, Andrea Santangelo, G. L. Israel, N. E. White, Luigi Stella, F. Frontera, Santina Piraino
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 69:141-144
We report and discuss preliminary results obtained from the analysis of a sample of X-ray pulsars observed by SAX and XTE. The sample includes GX1+4, a ∼125 s period low-mass X-ray pulsar which shows extreme properties and spin-up/down behaviour, 4
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9683b2c32a634380e4aedd4786563177
https://doi.org/10.1016/s0920-5632(98)00197-2
https://doi.org/10.1016/s0920-5632(98)00197-2
Autor:
S. Del Sordo, N. R. Robba, G. Cusumano, Mauro Orlandini, Luciano Burderi, Andrea Santangelo, Arvind Parmar, D. Dal Fiume, T. Oosterbroek, S. Giarrusso, Santina Piraino
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 69:220-223
The transient X-ray pulsar GS 1843+009 was observed by BeppoSAX satellite on 1997 April 4, while it was at flux level of 50 mCrab in the 20–200 keV energy band. Using the MECS and LECS concentrators, the source position was measured with unpreceden
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a594504b1b787e92bfe0af2d6727b121
https://doi.org/10.1016/s0920-5632(98)00212-6
https://doi.org/10.1016/s0920-5632(98)00212-6
Autor:
Refiz Duro, E. Egron, Santina Piraino, Sara Motta, N. R. Robba, R. Iaria, T. M. Belloni, A. D'Ai, Andrea Santangelo, Luciano Burderi, T. Di Salvo, A. Papitto, Alessandro Riggio
We use data of the bright atoll source 4U 1705-44 taken with XMM-Newton, BeppoSAX and RXTE both in the hard and in the soft state to perform a self-consistent study of the reflection component in this source. Although the data from these X-ray observ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::526cfdaa4c8282f67755a246e75415b4
http://hdl.handle.net/10447/73488
http://hdl.handle.net/10447/73488
Publikováno v:
Scopus-Elsevier
Astrophysical Journal, 514, L31-L33. IOP Publishing Ltd.
Astrophysical Journal, 514, L31-L33. IOP Publishing Ltd.
Exploiting the presence of kilohertz quasi-periodic oscillations (QPOs) in the timing power spectrum, we find that the soft x-ray emission of the neutron-star X-ray binary and atoll source 4U1636-536 modulated at the QPO frequency lags behind that of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1bdb09544bfda762195886fcd2c4463e
https://doi.org/10.1086/311941
https://doi.org/10.1086/311941
Publikováno v:
SPIE Proceedings.
The high pressure gas scintillation proportional counter, HPGSPC, was launched on April 30, 1996, as part of the narrow field instruments package of the satellite for x-ray astronomy BeppoSAX. Sensitive in the 4 - 100 keV band it fills the gap betwee
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee051a6007713dbc71ba9115b63a6d6f
https://doi.org/10.1117/12.283797
https://doi.org/10.1117/12.283797