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Titolo:
BEPPOSAX OBSERVATION OF 3C273 - BROAD-BAND SPECTRUM AND DETECTION OF A LOW-ENERGY ABSORPTION FEATURE
Autore:
GRANDI P; GUAINAZZI M; MINEO T; PARMAR AN; FIORE F; MATTEUZZI A; NICASTRO F; PEROLA GC; PIRO L; CAPPI M; CUSUMANO G; FRONTERA F; GIARRUSSO S; PALAZZI E; PIRAINO S;
Indirizzi:
CNR,IST ASTROFIS SPAZIALE,VIA ENRICO FERMI 21 I-00044 FRASCATI RM ITALY NUOVA TELESPAZIO,BEPPOSAX SCI DATA CTR I-00131 ROME ITALY CNR,IST FIS COSM & APPLICAZ INFORMAT I-90146 PALERMO ITALY EUROPEAN SPACE AGCY,DEPT SPACE SCI,DIV ASTROPHYS,ESTEC NL-2200 AG NOORDWIJK NETHERLANDS OSSERV ASTRON ROMA I-00044 MONTEPORZIO CATON ITALY UNIV STUDI ROMA 3,DIPARTIMENTO FIS E AMALDI I-00146 ROME ITALY CNR,IST TECNOL & STUDIO RADIAZ EXTRATERR I-40129 BOLOGNA ITALY RIKEN,INST PHYS & CHEM RES WAKO SAITAMA 35001 JAPAN UNIV FERRARA,DIPARTIMENTO FIS I-44100 FERRARA ITALY
Titolo Testata:
Astronomy and astrophysics
fascicolo: 2, volume: 325, anno: 1997,
pagine: 17 - 20
SICI:
0004-6361(1997)325:2<17:BOO3-B>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
RAY; EMISSION; JET;
Keywords:
X-RAY, OBSERVATIONS; QUASAR, 3C273;
Tipo documento:
Letter
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
25
Recensione:
Indirizzi per estratti:
Citazione:
P. Grandi et al., "BEPPOSAX OBSERVATION OF 3C273 - BROAD-BAND SPECTRUM AND DETECTION OF A LOW-ENERGY ABSORPTION FEATURE", Astronomy and astrophysics, 325(2), 1997, pp. 17-20

Abstract

We report the results of a 3C273 observation performed during the Science Verification Phase (SVP) of the BeppoSAX satellite. The broad-band spectrum is well represented by a power-law between similar to 1 keVand 200 keV. The spectral slope is flat (Gamma similar to 1.6), with a weak emission line at similar to 6.4 keV (rest frame) of EW similar to 30 eV. Below 1 keV, a deviation from a power-law due to an absorption feature plus a soft component is present. This is the first time that a feature in absorption at similar to 0.5 keV (observer frame) is unambiguously detected in 3C273.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/17 alle ore 09:22:26