- ID:
- ivo://nasa.heasarc/intibisvhd
- Title:
- INTEGRAL IBIS Hard X-Ray Survey Above 100 keV Source Catalog
- Short Name:
- INTIBISVHD
- Date:
- 10 May 2024
- Publisher:
- NASA/GSFC HEASARC
- Description:
- This table contains results from an all-sky survey, performed by the Imager on-Board the INTEGRAL Satellite (IBIS) telescope on board the INTErnational Gamma-Ray Astrophysics Laboratory (INTEGRAL) observatory over 11 years of operation, using data acquired at energies above 100 keV. The catalog of detected sources includes 132 objects. The statistical sample detected on the time-averaged 100-150 keV map at a significance above 5 sigma contains 88 sources: 28 active galactic nuclei (AGNs), 38 low-mass X-ray binaries (LMXBs), 10 high-mass X-ray binaries (HMXBs) and 12 rotation-powered young X-ray pulsars. The catalog also includes 15 persistent sources, which were registered at a significance 4 sigma <= S/N < 5 sigma, where S/N is the signal-to-noise ratio, but at the same time were firmly detected (>= 12 sigma) in the lower 17-60 keV energy band. All registered sources are known X-ray emitters, which means that the catalog has 100% purity in this respect. Additionally, 29 catalogued sources were detected significantly in different time slices of the survey. In the reference paper presenting the results of this survey, the authors present a hardness ratio for Galactic and extragalactic sources, an LMXB longitudinal asymmetry, and a number-flux relation for non-blazar AGNs. At higher energies, in the 150-300 keV energy band, 25 sources have been detected with S/N >= 5 sigma, including seven AGNs, 13 LMXBs, three HMXBs and two rotation-powered pulsars. Among LMXBs and HMXBs, the authors identified 12 black hole candidates (BHCs) and four neutron star (NS) binaries. For this hard X-ray survey, the authors utilized all publicly available INTEGRAL data acquired by the IBIS telescope between 2002 December and 2014 January (INTEGRAL spacecraft revolutions 26 - 1377). The survey also contains private data from the M82 deep field (PI: Sazonov) and scanning observations of the Galactic Center (PI: Krivonos) and Puppis region (PI: Tsygankov). The survey sky coverage as a function of a 5-sigma limiting flux is shown in Fig. 2 of the reference paper. The peak sensitivity of the survey is about 2 mCrab (8 x 10<sup>-12</sup> erg s<sup>-1</sup> cm<sup>-2</sup> in the 100-150 keV energy band). The survey covers ~10% of the sky down to a flux limit of 3.7 mCrab (1.5 x 10<sup>-11</sup> erg s<sup>-1</sup> cm<sup>-2</sup>) and 90% of the sky down to 25 mCrab (10<sup>-10</sup> erg s<sup>-1</sup> cm<sup>-2</sup>). The catalog has been compiled from sources passed through detection conditions in the reference 100-150 keV energy band on time-average sky maps (Section 2.1 of the reference paper) and maps built over different time periods (Section 2.2 ibid.). For all 132 sources, the time-averaged fluxes are given, even for those sources which were not detected therein. For some variable sources and for sources which were only detected in certain time periods, the fluxes measured in the specified time intervals are also given. Thus, this catalog has 50 additional rows for such entries, giving it a total size of 182 rows. This table was created by the HEASARC in November 2016 based on the electronic version of Table 2 from the reference paper which was obtained from the CDS (their catalog J/MNRAS/448/3766 file table2.dat). This is a service provided by NASA HEASARC .
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- ID:
- ivo://nasa.heasarc/intgccat
- Title:
- INTEGRAL IBIS Hard X-Ray Survey of Galactic Center
- Short Name:
- IBIS/GC
- Date:
- 10 May 2024
- Publisher:
- NASA/GSFC HEASARC
- Description:
- From August 23 through September 24, 2003, the INTEGRAL Observatory conducted a deep survey of the Galactic Center region with a record-breaking sensitivity at energies above 20keV. The authors analyzed the images of the Galactic Center region obtained with the ISGRI detector of the IBIS telescope (15 - 200 keV) and this table contains their catalog of detected sources. A total of 60 sources with fluxes above 1.5 milliCrab were detected in the range from 18 to 60 keV (1 mCrab = 1.36 x 10^-11 erg/s/cm^2 in this energy band for a source with a power-law spectrum with a photon index of 2.1) above a detection threshold of 6.5 sigma which was chosen to avoid the strong effect of systematic uncertainties. The nature of 51 of the 60 sources is known: most of them (38 of 51) are low-mass X-ray binaries, and the remaining 13 include 5 high-mass X-ray binaries, 2 cataclysmic variables, an anomalous X-ray pulsar, a soft gamma repeater and three extragalactic objects. This table was created by the HEASARC in February 2005 based on CDS Catalog J/PAZh/30/430 (the catalog.dat file). This is a service provided by NASA HEASARC .
- ID:
- ivo://CDS.VizieR/J/A+A/545/A27
- Title:
- INTEGRAL/IBIS 9-year Galactic hard X-ray survey
- Short Name:
- J/A+A/545/A27
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present sky images, sensitivity maps, and catalogs of detected sources in the three energy bands 17-60, 17-35, and 35-80keV in the Galactic plane at |b|<17.5 degrees. The total number of sources in the reference 17-60keV band includes 402 objects exceeding a 4.7{sigma} detection threshold on the nine-year time-averaged map. Among the identified sources with known and tentatively identified natures, 253 are Galactic objects (108 low-mass X-ray binaries, 82 high-mass X-ray binaries, 36 cataclysmic variables, and 27 are of other types), and 115 are extragalactic objects, including 112 active galactic nuclei (AGNs) and 3 galaxy clusters. The sample of Galactic sources with S/N>4.7 sigma has an identification completeness of ~92%, which is valuable for population studies. Since the survey is based on the nine-year sky maps, it is optimized for persistent sources and may be biased against finding transients.
- ID:
- ivo://nasa.heasarc/intibisgal
- Title:
- INTEGRAL IBIS 9-Year Galactic Hard X-Ray Survey Catalog
- Short Name:
- INTIBISGAL
- Date:
- 10 May 2024
- Publisher:
- NASA/GSFC HEASARC
- Description:
- The INTEGRAL observatory operating in a hard X-ray/gamma domain has gathered a large observational data set over nine years starting in 2003. Most of the observing time was dedicated to the Galactic source population study, making possible the deepest Galactic survey in hard X-rays ever compiled. The authors aimed to perform a Galactic survey that could be used as the basis of Galactic source population studies, and performed mapping of the Milky Way in hard X-rays over the maximum exposure available at Galactic latitudes |b| < 17.5 degrees. They used sky reconstruction algorithms especially developed for the high quality imaging of INTEGRAL/IBIS data. In their paper. they presented sky images, sensitivity maps, and catalogs of detected sources in the three energy bands 17 - 60, 17 - 35, and 35 - 80 keV in the Galactic plane at |b| < 17.5 degrees. The total number of sources in the reference 17 - 60 keV band includes 402 objects exceeding a 4.7-sigma detection threshold on the nine-year time-averaged map. Among the identified sources with known and tentatively identified natures, 253 are Galactic objects (108 low-mass X-ray binaries, 82 high-mass X-ray binaries, 36 cataclysmic variables, and 27 are of other types), and 115 are extragalactic objects, including 112 active galactic nuclei and 3 galaxy clusters. The sample of Galactic sources with S/N > 4.7 sigma has an identification completeness of ~92%, which is valuable for population studies. Since the survey is based on the nine-year sky maps, it is optimized for persistent sources and may be biased against finding transients. This table contains the catalog of 402 INTEGRAL sources exceeding the detection threshold in the 17 - 60 keV energy band. This table was created by the HEASARC in September 2012 based on CDS CATALOG J/A+A/545/A27 file catalog.dat. This is a service provided by NASA HEASARC .
- ID:
- ivo://nasa.heasarc/intvarcat
- Title:
- INTEGRAL/ISGRI Catalog of Variable X-Ray Sources
- Short Name:
- INTVARCAT
- Date:
- 10 May 2024
- Publisher:
- NASA/GSFC HEASARC
- Description:
- In 6 years of operation, INTEGRAL/ISGRI revealed more than 500 sources. Many of these sources are variable. Taking into account that nearly half of INTEGRAL/ISGRI sources are new and many of them are still unidentified, the variability properties of the sources can serve as additional parameters that may help to classify and identify the unknown sources. In order to study the variability properties of the sources detected by INTEGRAL/ISGRI, the authors have developed a method to quantify the variability of a source which is described in their paper. They have compiled a catalog of the sources that fit their criteria of variability. This catalog gives the values of fractional variability, the flux, and the corresponding 2-sigma errors of the sources from the INTEGRAL Reference Catalog (<a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/A+A/411/L59:">CDS Cat. J/A+A/411/L59:</a> INTVARCAT in Browse) version 30. The data are given for 3 energy bands: 20-40, 40-100, and 100-200 keV. The exposure times of the sources are given for each energy band only if the source was detected in the given band. This table also gives the source type according to the reference catalog. If the source is localized in more then one map then the weighted mean values of the flux and variability are given. The sources active during specific time periods and not detected at the total variability map are indicated with "b" letter in the source_flag parameter. The sources detected only in the total variability map are indicated with an "i" letter value for this parameter, while a letter "g" indicates that the source was affected by the "ghost" of another source. The map<sub>det</sub>* parameters specify the time period map(s) in which the source was visible, where the presence of an 'X' following a map number means that the source was not detected in the respective significance map, and that a lower limit for the fractional variability is given in such a case. This table was created by the HEASARC in December 2010 based on <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/A+A/522/A68">CDS Catalog J/A+A/522/A68</a> file table3.dat. This is a service provided by NASA HEASARC .
- ID:
- ivo://nasa.heasarc/isgri4yrct
- Title:
- INTEGRAL ISGRI 4-Year Source Catalog
- Short Name:
- ISGRI4YRCT
- Date:
- 10 May 2024
- Publisher:
- NASA/GSFC HEASARC
- Description:
- In its first 4 years of observing the sky above 20 keV, the INTEGRAL Soft Gamma-ray Imager (ISGRI) detected ~ 500 sources, around half of which were new or unknown at these energies. Follow-up observations at other wavelengths revealed that some of these sources feature unusually large column densities, long pulsations, and other interesting characteristics. The authors investigated where new and previously-known sources detected by ISGRI fit in the parameter space of high-energy objects, and they used the parameters to test correlations expected from theoretical predictions. For example, the influence of the local absorbing matter on periodic modulations was studied for Galactic High-Mass X-ray Binaries (HMXBs) with OB supergiant and Be companions. In their paper, they examined the spatial distribution of different types of sources in the Milky Way, using various projections of the Galactic plane, in order to highlight signatures of stellar evolution and to speculate on the origin of the group of sources whose classifications were still uncertain. This table contains all 499 sources detected by ISGRI listed in the reference paper, with the exception of the source 'PSR B1841-04' which was removed from the electronic version of the table by the CDS, after discussion with the author. The table contains the most precise coordinates and error radii available in the literature. Classifications are provided for all sources. When available, the published photoelectric absorption in the X-rays, distances/redshifts, and pulsation and orbital periods are also listed. This table was created by the HEASARC in April 2011 based on <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/A+A/467/585">CDS catalog J/A+A/467/585</a> file table1.dat. This is a service provided by NASA HEASARC .
- ID:
- ivo://nasa.heasarc/intpublic
- Title:
- INTEGRAL Public Data Results Catalog
- Short Name:
- INTEGRAL
- Date:
- 10 May 2024
- Publisher:
- NASA/GSFC HEASARC
- Description:
- The INTEGRAL Public Data Results 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). This 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. Note: For cases where two or more proposals have been amalgamated (entries with pi_lname = 'Amalgamated') for a given observation, the same observation is listed for each of the amalgamated proposal numbers. 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 <a href="http://heasarc.gsfc.nasa.gov/docs/integral/obslist.html">http://heasarc.gsfc.nasa.gov/docs/integral/obslist.html</a> and was updated on a weekly basis whenever that web page was updated. Automatic updates were discontinued in June 2019. Duplicate entries were removed in June 2019, also. This is a service provided by NASA HEASARC .
- ID:
- ivo://CDS.VizieR/J/A+A/411/L59
- Title:
- INTEGRAL reference catalog
- Short Name:
- J/A+A/411/L59
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We describe the INTEGRAL reference catalog which classifies previously known bright X-ray and gamma-ray sources before the launch of INTEGRAL. These sources are, or have been at least once, brighter than ~1mCrab above 3keV, and are expected to be detected by INTEGRAL. This catalog is being used in the INTEGRAL Quick Look Analysis to discover new sources or significantly variable sources. We compiled several published X-ray and gamma-ray catalogs, and surveyed recent publications for new sources. Consequently, there are 1122 sources in our INTEGRAL reference catalog. In addition to the source positions, we show an approximate spectral model and expected flux for each source, based on which we derive expected INTEGRAL counting rates. Assuming the default instrument performances and at least ~10^5^s exposure time for any part of the sky, we expect that INTEGRAL will detect at least ~700 sources below 10keV and ~400 sources above 20keV over the mission life.
- ID:
- ivo://nasa.heasarc/intrefcat
- Title:
- INTEGRAL Reference Catalog
- Short Name:
- INT/RefCat
- Date:
- 10 May 2024
- Publisher:
- NASA/GSFC HEASARC
- Description:
- The original version of the INTEGRAL Reference Catalog as published in 2003 classified previously known bright X-ray and gamma-ray sources before the launch of INTEGRAL. These sources are, or have been at least once, brighter than ~1 milliCrab above 3 keV energy, and are expected to be detected by INTEGRAL. This catalog was used in the INTEGRAL Quick Look Analysis (QLA) to discover new sources or significantly variable sources. The authors compiled several published X-ray and gamma-ray catalogs, and surveyed recent publications for new sources. Consequently, there were 1121 sources in the original INTEGRAL Reference Catalog. In addition to the source positions, an approximate spectral model and expected flux were given for each source, and the expected INTEGRAL counting rates based on these parameters was derived. Assuming the default instrument performances and at least ~10<sup>5</sup> seconds exposure time for any part of the sky, it is expected that INTEGRAL will detect at least ~700 sources below 10 keV and ~400 sources above 20 keV over the mission life. After the launch of INTEGRAL, a version of this catalog was placed on the ISDC website at <a href="http://www.isdc.unige.ch/integral/science/catalogue">http://www.isdc.unige.ch/integral/science/catalogue</a> and has been updated periodically since then by adding, for example, new sources discovered by INTEGRAL itself (indicated by the IGR prefix in the name). This HEASARC table is based on the web version at the ISDC, and will be updated within a few days of whenever the latter is updated. This database table is updated automatically in the HEASARC database system within one week of any changes to the online web page maintained by the INTEGRAL Science Data Center at the URL <a href="http://www.isdc.unige.ch/integral/catalog/latest/catalog.html">http://www.isdc.unige.ch/integral/catalog/latest/catalog.html</a> This is a service provided by NASA HEASARC .
- ID:
- ivo://CDS.VizieR/J/PAZh/30/430
- Title:
- INTEGRAL X-ray source in Galactic center
- Short Name:
- J/PAZh/30/430
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- From August 23 through September 24, 2003, the INTEGRAL Observatory conducted a deep survey of Galactic-Center region with a record-breaking sensitivity at energies above 20keV. We detected a total of 60 sources with fluxes above 1.5mCrab in the range 18-60keV.
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