X-RAY-SPECTRA OF BLAZARS - ANALYSIS OF THE COMPLETE EXOSTAT ARCHIVE

被引：53

作者：

SAMBRUNA, RM

BARR, P

GIOMMI, P

MARASCHI, L

TAGLIAFERRI, G

TREVES, A

机构：

[1] SCUOLA INT SUPER STUDI AVANZATI,TRIESTE,ITALY

[2] ESTEC,EUROPEAN SPACE AGCY,ISO OBSERV,NOORDWIJK,NETHERLANDS

[3] EUROPEAN SPACE INFORMAT SYST,FRASCATI,ITALY

[4] UNIV GENOA,DIPARTIMENTO FIS,GENOA,ITALY

[5] OSSERV ASTRON MILANO,MILAN,ITALY

来源：

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 1994年 / 95卷 / 02期

关键词：

BL LACERTAE OBJECTS; GENERAL; QUASARS; X-RAYS; GALAXIES;

D O I：

10.1086/192102

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We analyzed the 0.1-10 keV spectra of 26 blazars(21 BL Lac objects and 5 highly polarized quasars), on the basis of 93 exposures taken from the EXOSAT archives. Fits were performed first with a single power-law model. Indications are found that better fits can be obtained with models where the slope steepens at higher energies. We therefore considered a broken power law and found that in a large fraction of the spectra the fit is significantly improved. Fits with a power law + oxygen edge at 0.6 keV are also explored.

引用

页码：371 / 385

页数：15

共 60 条

[1] OPTICAL AND INFRARED POLARIZATION OF ACTIVE EXTRA-GALACTIC OBJECTS [J].