GRO/Piccinott ivo://nasa.heasarc/cbatpicagn NASA/GSFC HEASARC Malizia et al. 2026-05-08 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov AGN Compton Gamma-Ray Observatory (CGRO) BATSE Earth-occultation data have been used by Malizia et al. (1999, ApJ, 519, 637) to search for emission in the 20-100 keV band from all sources in the Piccinotti sample (Piccinotti et al. 1982, ApJ, 253, 485: the HEASARC A2PIC database), which represents the only complete 20-10 keV survey to date of the extragalactic sky down to a limiting flux of 3.1 x 10<sup>-11</sup> ergs cm<sup>-2</sup> s<sup>-1</sup>. Nearly 4 years of observations have been analyzed to reach a 5-sigma confidence level of about 7.8 x 10<sup>-11</sup> ergs cm<sup>-2</sup> s<sup>-1</sup> in the band considered. Of the 36 sources in the sample, 14 have been detected above the 5-sigma confidence level, while marginal detection (3 <= sigma <= 5) can be claimed for 13 sources; for nine objects, 2 sigma upper limits are reported. A comparison of BATSE results with data at higher energies is used to estimate the robustness of the data analysis. While the detection level of each source is reliable, the flux measurement may be overestimated in some sources by as much as 35%, probably because of incomplete data cleaning. Comparison of BATSE fluxes with X-ray fluxes obtained in the 2-10 keV range and averaged over years indicates that a canonical power law of photon index 1.7 gives a good description of the broadband spectra of bright active galactic nuclei (AGNs) and that spectral breaks preferentially occur above 100 keV. This HEASARC database was created in October 1999 based primarily on Table 1 of Malizia et al. (1999), together with the positions and HEAO-1 designations taken from the original Piccinotti Catalog (Piccinotti et al. 1982, ApJ, 253, 485: the HEASARC A2PIC database). This is a service provided by NASA HEASARC . 1999ApJ...519..637M https://heasarc.gsfc.nasa.gov/W3Browse/all/cbatpicagn.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=cbatpicagn& GET text/xml 180 99999 true 2.6289 10.9746 1 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=cbatpicagn GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_cbatpicagn&Action=More+Options&Action=Parameter+Search&ConeAdd=1 CGRO 1 Gamma-ray public cbatpicagn CGRO BATSE-Observed Piccinotti Sample of Active Galactic Nuclei name Source Designation meta.id;meta.main char nullable heao1_name HEAO-1 Designation meta.id char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable type Type of Source src.class char nullable flux_batse Mean 20-100keV BATSE Flux (cgs) erg/cm^2/s double nullable flux_batse_error Error in Mean BATSE flux (cgs) erg/cm^2/s double nullable flux_mean Mean 2-10keV Flux (cgs) erg/cm^2/s double nullable n_batse Significance of BATSE Detection float nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable flux_ratio Mean 20-100keV BATSE/OSSE Ratio float nullable vr Flux Variability in 2-10 keV float nullable osse_coverage OSSE Coverage (Periods,days) char nullable flux_ratio_error Error in BATSE/OSSE Flux Ratio float nullable class Browse Object Classification src.class short nullable bii Galactic Latitude degree pos.galactic.lat double nullable lii Galactic Longitude degree pos.galactic.lon double nullable