Benvenuti nell'Anagrafe della Ricerca d'Ateneo
La valutazione delle attività di ricerca che si svolgono nelle università ha assunto un'importanza rilevante sia per l'intero sistema universitario sia all'interno di ogni singolo ateneo. Roma Tre si è quindi dotata di idonei strumenti informativi in grado di supportare al meglio le azioni di monitoraggio e di valutazione delle attività di ricerca svolte nei propri dipartimentied ha realizzato una Anagrafe della Ricerca di Ateneo.
EnglishWe present the first results from an XMM-Newton serendipitous medium-deep survey, which covers nearly 3 deg(2). We detect a total of 1022, 495, and 100 sources, down to minimum fluxes of about 5.9 x 10(-16), 2.8 x 10(-15), and 6.2 x 10(-15) ergs cm(-2) s(-1), in the 0.5-2, 2-10, and 4.5-10 keV bands, respectively. In the soft band this is one of the largest samples available to date and surely the largest in the 2-10 keV band at our limiting X-ray flux. The measured log N-log S determinations are found to be in good agreement with previous determinations. In the 0.5-2 keV band, we detect a break at fluxes around 5 x 10(-15) ergs cm(-2) s(-1). In the harder bands, we fill in the gap at intermediate fluxes between deeper Chandra and XMM-Newton observations and shallower BeppoSAX and ASCA surveys.
Baldi A, Molendi S, Comastri A, Fiore F, Matt G, & Vignali C (2002). The HELLAS2XMM survey. I. The X-ray data and the log N-log S relation. THE ASTROPHYSICAL JOURNAL, 564(1), 190-195.
| Titolo: | The HELLAS2XMM survey. I. The X-ray data and the log N-log S relation | |
| Autori: | ||
| Data di pubblicazione: | 2002 | |
| Rivista: | ||
| Citazione: | Baldi A, Molendi S, Comastri A, Fiore F, Matt G, & Vignali C (2002). The HELLAS2XMM survey. I. The X-ray data and the log N-log S relation. THE ASTROPHYSICAL JOURNAL, 564(1), 190-195. | |
| Abstract: | We present the first results from an XMM-Newton serendipitous medium-deep survey, which covers nearly 3 deg(2). We detect a total of 1022, 495, and 100 sources, down to minimum fluxes of about 5.9 x 10(-16), 2.8 x 10(-15), and 6.2 x 10(-15) ergs cm(-2) s(-1), in the 0.5-2, 2-10, and 4.5-10 keV bands, respectively. In the soft band this is one of the largest samples available to date and surely the largest in the 2-10 keV band at our limiting X-ray flux. The measured log N-log S determinations are found to be in good agreement with previous determinations. In the 0.5-2 keV band, we detect a break at fluxes around 5 x 10(-15) ergs cm(-2) s(-1). In the harder bands, we fill in the gap at intermediate fluxes between deeper Chandra and XMM-Newton observations and shallower BeppoSAX and ASCA surveys. | |
| Handle: | http://hdl.handle.net/11590/132461 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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