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J/A+A/375/739       Hard X-ray properties of blazars         (Donato+, 2001)

Hard X-ray properties of blazars. Donato D., Ghisellini G., Tagliaferri G., Fossati G. <Astron. Astrophys. 375, 739 (2001)> =2001A&A...375..739D
ADC_Keywords: BL Lac objects ; QSOs ; X-ray sources Keywords: BL Lacertae objects: general - X-rays: galaxies Abstract: We have considered all blazars observed in the X-ray band and for which the slope of the X-ray spectrum is available. We have collected 421 spectra of 268 blazars, including 12 archival unpublished ASCA spectra of 7 blazars whose analysis is presented here. The X-ray spectra of blazars show trends as a function of their power, confirming that the blazar overall energy distribution can be parameterized on the basis of one parameter only, i.e. the bolometric luminosity. This is confirmed by the relatively new hard (2-10 keV) X-ray data. Our results confirm the idea that in low power objects the X-ray emission mechanism is the synchrotron process, dominating both the soft and the hard X-ray emissions. Low energy peaked BL Lac objects are intermediate, often showing harder spectra in the hard X-ray band, suggesting that the synchrotron process dominates in the soft band, with the inverse Compton process dominating at high energies. The most powerful objects have X-ray spectra that are flat both in the soft and in the hard band, consistent with a dominating inverse Compton component. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table5.dat 81 422 Catalogue refs.dat 133 58 References
See also: VII/224 : Quasars and Active Galactic Nuclei (10th Ed.) (Veron+ 2001) VIII/5 : Bright Extragalactic Radio Sources (1Jy) (Kuehr+, 1981) J/ApJ/525/127 : RGB sample of BL Lacertae objects (Laurent-Muehleisen+ 1999) J/A+A/311/384 : ROSAT observations of BL Lacertae objects (lamer+ 1996) J/MNRAS/277/1477 : A catalogue of BL Lacertae objects (Padovani+ 1995) Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 9 A9 --- Name IAU name of the source (based on 1950 or 2000 positions) 11- 15 F5.3 --- z ? Redshift 17- 22 F6.3 Jy S5GHz ? Radio flux at 5 GHz 24- 27 A4 --- r_S5GHz Reference for the radio flux, in ref.dat file 29- 34 F6.3 mJy Sopt Optical flux at 5500Å 36- 39 A4 --- r_Sopt Reference for the optical flux, in ref.dat file 41- 46 F6.3 uJy SX X-ray flux at 1 keV 48- 52 A5 --- r_SX Reference for the X-ray flux, in ref.dat file 54- 58 F5.3 --- Sp+Index X-ray photon spectral index 60- 64 F5.3 --- e_Sp+Index ? Error on the X-ray spectral index 66- 70 A5 --- r_Sp+Index Reference for the X-ray spectral index, in ref.dat file 72 I1 --- Class [1/3]? Classification of the source (1) 74- 78 A5 --- r_Class Reference for class, in ref.dat file 80- 81 A2 --- Sat Observing satellite (2)
Note (1): Class: 1 = HBL, High energy peaked BL Lacs 2 = LBL, Low Peaked BL Lac objects 3 = FSRQ, Flat Spectrum Radio Quasars Note (2): Observing satellites: AS = ASCA RO = ROSAT SA = BeppoSAX EX = EXOSAT EI = Einstein
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 5 A5 --- Ref Reference code 7- 25 A19 --- BibCode BibCode 27- 54 A28 --- Aut Author's name 55-133 A79 --- Com Comments
History: From electronic version of the journal
(End) James Marcout, Patricia Bauer [CDS] 25-Sep-2001
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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