2001A&A...376...77B


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.23CEST02:46:05

2001A&A...376...77B - Astronomy and Astrophysics, volume 376, 77-84 (2001/9-2)

BeppoSAX observations of Mrk 841 and Mrk 335.

BIANCHI S., MATT G., HAARDT F., MARASCHI L., NICASTRO F., PEROLA G.C., PETRUCCI P.O. and PIRO L.

Abstract (from CDS):

We present and discuss BeppoSAX observations of Mrk 841 and Mrk 335, two Seyfert 1 galaxies in which previous observations have established the presence of soft excesses. We confirm the soft excess in both sources, even if for Mrk 841 a warm absorber provides a fit almost as good as the one with a true excess. As far as the hard X-ray continuum is concerned, a Comptonization model provides a fit as good as a power law and a physically sound solution for Mrk 841. For Mrk 335, the Comptonization model gives a result which is somewhat better on statistical ground, but rather problematic on physical ground. The most interesting results regard the reprocessing components. For Mrk 841 we find a very large reflection continuum but an almost normal iron line equivalent width even if, within the errors, a solution in which both components are a factor ∼2 larger than expected for an accretion disc is still marginally acceptable. If this is the case, an anisotropy of the primary emission seems the best explanation. On the contrary, in Mrk 335 we find a very large iron line EW but a reflection component not accordingly large. In this case, the best solution seems to be in terms of reflection from an ionized disc.

Abstract Copyright:

Journal keyword(s): galaxies: individual: Mrk 841, Mrk 335 - galaxies: Seyfert - X-rays: galaxies

Simbad objects: 3

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Number of rows : 3

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 Mrk 335 Sy1 00 06 19.5371542746 +20 12 10.617456059   14.19 13.85     ~ 1105 0
2 NGC 4051 Sy1 12 03 09.6098828919 +44 31 52.693714606   11.08 12.92 9.94   ~ 2007 1
3 Mrk 841 Sy1 15 04 01.1935077982 +10 26 15.778741853   14.50 14.27     ~ 587 0

    Equat.    Gal    SGal    Ecl

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2020.10.23-02:46:05

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