INTBSC - INTEGRAL Bright Source Catalog

Overview

The INTEGRAL Bright Source Catalog is based on publicly available data from the two main instruments (IBIS and SPI) on board INTEGRAL (see Winkler et al. 2003, A&A, 411, L1 for a description of the INTEGRAL spacecraft and instrument packages). INTEGRAL began collecting data in October 2002. This catalog will be regularly updated as data become public (~14 months after they are obtained).

The Bright Source Catalog is a collaborative effort between the INTEGRAL Science Data Center (ISDC) in Switzerland and the NASA Goddard Space Flight Center (GSFC) INTEGRAL Guest Observer Facility (GOF). The results presented here are a result of a semi-automated analysis and they should be considered as approximate: they are intended to serve as a guideline to those interested in pursuing more detailed follow-up analyses.

The data from the imager ISGRI (Lebrun et al. 2003, A&A, 411, L141) have been analyzed at the INTEGRAL Science Data Centre (ISDC), while the SPI (Vedrenne et al. 2003, A&A, 411, L63) data analysis was performed at GSFC as a service of the INTEGRAL GOF.

Bulletin

The INTBSC database table was last updated on 17 November 2024.

References

This table is based on the online web page maintained by the INTEGRAL GOF at the URL http://heasarc.gsfc.nasa.gov/docs/integral/INTEGRAL_bright_sources.html

Further information and analysis results can be found linked from the INTEGRAL GOF page at the URL http://heasarc.gsfc.nasa.gov/docs/integral/integralgof.html

Provenance

This database table was first created in September 2004. It is based on the online web page maintained by the INTEGRAL GOF at the URL http://heasarc.gsfc.nasa.gov/docs/integral/INTEGRAL_bright_sources.html and is updated on a weekly basis whenever the web page is updated.

Data Products

The following data products are available:

         Type                 Description

       SPI lightcurve       (20 - 40 keV) in ASCII format

       ISGRI lightcurve     (22 - 40 keV and 40 - 80 keV) in ASCII format
                            and as a JPEG plot; Note: a count rate of 97.3 cps
                            (22 - 40 keV) and 64.4 cps (40 - 80 keV)
                            corresponds to 1 Crab

       ISGRI analysis summary for all analyzed observations and the two
                            energy bins in ASCII format

Parameters

Name
The INTEGRAL Bright Source Catalog designation of the source.

Source_Type
The source type according to a classification scheme which contains the following acronyms, among others:

       source_type    Meaning

         BHC        Black Hole Candidate
         HMXB       High-Mass X-ray Binary
         LMXB       Low-Mass X-Ray Binary
         SNR        Supernova Remnant
         Sy         Seyfert Galaxy
         XB         X-ray Binary

RA
The Right Ascension of the source in the specified equinox, given in J2000 equatorial coordinates and to a precision of 1 second of time in the originating table.

Dec
The Declination of the source in the specified equinox, given in J2000 equatorial coordinates and to a precision of 1 second of time in the originating table.

LII
The Galactic Longitude of the source.

BII
The Galactic Latitude of the source.

ISGRI_Detections
The number of pointings in which the source was detected by the ISGRI instrument.

SPI_Avg_Flux
The average SPI flux, in milliCrabs.

SPI_Avg_Flux_Error
The uncertainty in the average SPI flux, in milliCrabs.

SPI_High_Flux
The highest measured SPI flux which has at least a 3-sigma significance, in milliCrabs.

SPI_High_Flux_Error
The uncertainty in the highest measured SPI flux, in milliCrabs.

SPI_Low_Flux
The lowest measured SPI flux which has at least a 1-sigma significance, in milliCrabs.

SPI_Low_Flux_Error
The uncertainty in the lowest measured SPI flux, in milliCrabs.

SPI_Remarks
Any remarks regarding the SPI analysis. This field may include an embedded link to a web page with more information on the SPI analysis.

ISGRI_Soft_Rate
The IBIS/ISGRI 22-40 keV average count rate, in counts per second, based on measurements with at least a 1.5-sigma significance. A count rate of 90 ct/s corresponds to 1 Crab.

ISGRI_Soft_Rate_Error
The uncertainty in the IBIS/ISGRI 22-40 keV average count rate, in counts per second.

ISGRI_Hard_Rate
The IBIS/ISGRI 40-80 keV average count rate, in counts per second, based on measurements with at least a 1.5-sigma significance. A count rate of 66 ct/s corresponds to 1 Crab.

ISGRI_Hard_Rate_Error
The uncertainty in the IBIS/ISGRI 40-80 keV average count rate, in counts per second.

Class
The HEASARC Browse object classification, based on the value of the source_type parameter.

Data_ID
The data result set identifier. This parameter is used by Browse to link to the corresponding INTEGRAL data products.

Contact Person

Questions regarding the INTBSC database table can be addressed to the HEASARC Help Desk.

Page Author: Browse Software Development Team
Last Modified: Monday, 16-Sep-2024 17:29:11 EDT