GALCENPSPC ivo://nasa.heasarc/galcenpspc NASA/GSFC HEASARC Sidoli et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source This table contains a catalog of 107 point-like X-ray sources derived from a systematic analysis of all the ROSAT PSPC observations of the Galactic Center region performed in 1992-1993. Besides Sgr A*, the massive black hole at the galactic center, 41 X-ray sources have been positionally associated with already classified objects. Twenty are identified with foreground stars and five with known Low Mass X-ray Binaries (LMXBs). The majority of the sources in this catalog still remains unidentified. They are hard and/or severely absorbed and probably represent a large population of X-ray binaries located in the galactic center region, accreting at low accretion rates, and still largely unknown. Analyses were performed in 4 different energy ranges: 0.1 - 2.4 keV (PSPC channels 8 - 240, the total energy band T), 0.1 - 0.4 keV (PSPC channels 8 - 40, the soft energy band S), 0.5 - 0.9 keV (PSPC channels 52 - 90, the medium energy band), and 0.9 - 2.4 keV (PSPC channels 91 - 240, the hard energy band H). A maximum likelihood method was applied to the merged photon lists in each band. Only a detection liklihood larger than 10 (corresponding to a probability of a chance detection smaller than e<sup>-10</sup>) was considered to be a true source. This table was created by the HEASARC in March 2012 based on <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/A+A/368/835">CDS Catalog J/A+A/368/835</a> file table3.dat. This is a service provided by NASA HEASARC . 2001A&A...368..835S https://heasarc.gsfc.nasa.gov/W3Browse/all/galcenpspc.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=galcenpspc& GET text/xml 180 99999 true 266.75333333 -30.19086111 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=galcenpspc GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_galcenpspc&Action=More+Options&Action=Parameter+Search&ConeAdd=1 ROSAT 0.0166666666666667 X-ray public galcenpspc ROSAT PSPC Galactic Center Soft X-Ray Source Catalog name Source Designation meta.id;meta.main char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable error_radius RMS Uncertainty in Position arcsec stat.error;pos double nullable count_rate_limit Limit Flag for Count Rate meta.code;phot.count;em.X-ray.soft char nullable count_rate Count Rate in the Total Energy Band (0.1-2.4 keV) ct/s phot.count;em.X-ray.soft double nullable count_rate_error RMS Uncertainty in Count Rate ct/s stat.error;phot.count;em.X-ray.soft double nullable count_rate_flag Flag [HMS] Indicates the Band in Which the Source Was Detected meta.code;phot.count;em.X-ray.soft char nullable log_sb_over_hb Softness Ratio (0.1-0.4keV)/(0.9-2.4keV) phot.count;em.X-ray.soft;arith.ratio double nullable bii Galactic Latitude degree pos.galactic.lat double nullable log_mb_over_hb_error RMS Uncertainty in Logarithm(MB/HB) stat.error;phot.count;em.X-ray.soft;arith.ratio double nullable log_sb_over_hb_error RMS Uncertainty in Logarithm(SB/HB) stat.error;phot.count;em.X-ray.soft;arith.ratio double nullable log_sb_over_hb_limit Limit Flag for Softness Ratio (0.1-0.4keV)/(0.9-2.4keV) meta.code;phot.count;em.X-ray.soft;arith.ratio char nullable log_mb_over_hb_limit Limit Flag for Softness Ratio (0.5-0.9keV)/(0.9-2.4keV) meta.code;phot.count;em.X-ray.soft;arith.ratio char nullable lii Galactic Longitude degree pos.galactic.lon double nullable pt94_source_number Source Number in Predehl & Truemper (1994A&A...290L..29P) meta.id.cross short nullable source_notes Notes meta.note char nullable source_number Sequential Identification Number for Each Source in Catalog meta.id;src short nullable log_mb_over_hb Softness Ratio (0.5-0.9keV)/(0.9-2.4keV) phot.count;em.X-ray.soft;arith.ratio double 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