2001A&A...368...38T


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.24CEST16:57:22

2001A&A...368...38T - Astronomy and Astrophysics, volume 368, 38-43 (2001/3-2)

The 0.1-200 keV spectrum of the blazar PKS 2005-489 during an active state.

TAGLIAFERRI G., GHISELLINI G., GIOMMI P., CELOTTI A., CHIABERGE M., CHIAPPETTI L., GLASS I.S., MARASCHI L., TAVECCHIO F., TREVES A. and WOLTER A.

Abstract (from CDS):

The bright BL Lac object PKS 2005-489 was observed by BeppoSAX on November 1-2, 1998, following an active X-ray state detected by RossiXTE. The source, detected between 0.1 and 200 keV, was in a very high state with a continuum well fitted by a steepening spectrum due to synchrotron emission only. Our X-ray spectrum is the flattest ever observed for this source. The different X-ray spectral slopes and fluxes, as measured by various satellites, are consistent with relatively little changes of the peak frequency of the synchrotron emission, always located below 1017Hz. We discuss these results in the framework of synchrotron self-Compton models. We found that for the BeppoSAX observation, the synchrotron peak frequency is between 1015 and 2.5x1016Hz, depending on the model assumptions.

Abstract Copyright:

Journal keyword(s): BL Lacertae objects: general - X-rays: galaxies - BL Lacertae objects: individual: PKS 2005-489

Simbad objects: 7

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Number of rows : 7

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 421 BLL 11 04 27.3139210166 +38 12 31.798324828   13.50 12.90 8.31   ~ 2405 1
2 7C 1219+2830 BLL 12 21 31.6902446545 +28 13 58.500383827   16.81 16.11 14.24   ~ 782 1
3 3C 279 QSO 12 56 11.1664521013 -05 47 21.531840471   18.01 17.75 15.87   ~ 2727 2
4 4C 39.49 BLL 16 53 52.21668494 +39 45 36.6089458 14.09 14.15 13.29 8.26   ~ 1934 2
5 QSO B2005-489 BLL 20 09 25.3910622923 -48 49 53.722146927   15.75 12.81 11.41   ~ 515 2
6 QSO B2155-304 BLL 21 58 52.0651817803 -30 13 32.120657891   13.36 13.09 12.62   ~ 1576 1
7 QSO B2344+514 BLL 23 47 04.8376303689 +51 42 17.875387216     15.50 10.7   ~ 393 0

    Equat.    Gal    SGal    Ecl

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2020.10.24-16:57:22

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