FITS Headers
lambda_weiland_2025_synch_beta_and_mask.fits
Primary Header
SIMPLE = T / file does conform to FITS standard BITPIX = 16 / number of bits per data pixel NAXIS = 0 / number of data axes EXTEND = T / FITS dataset may contain extensions COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H DATE = '2025-11-17T00:00:00' /file creation date (YYYY-MM-DDThh:mm:ss UT) ORIGIN = 'LAMBDA ' / Legacy Archive Microwave Background Analysis OBJECT = 'ALL-SKY ' / Portion of sky given COMMENT This file contains the synchrotron spectral index in intensity as COMMENT computed by Weiland et al. 2025 from Haslam 408 MHz and the COMMENT synchrotron component maps at 23 and 30 GHz derived using the ADR COMMENT method. Statistical uncertainties are provided as a map; potential COMMENT systematic uncertainties dervied from simulations are discussed in COMMENT the paper. The analysis mask (diffuse and sources) is included in the COMMENT third field (0=reject, 1=accept). REFERENC= 'Weiland et al. 2025 ApJ 984, 80' RESOLUTN= 7 / Resolution index SKYCOORD= 'Galactic' / Coordinate system PIXTYPE = 'HEALPIX ' / Pixel algorithm ORDERING= 'NESTED ' / Ordering scheme NSIDE = 128 / Resolution parameter NPIX = 196608 / # of pixels FIRSTPIX= 0 / First pixel (0 based) LASTPIX = 196607 / Last pixel (0 based) END
Map Table
XTENSION= 'BINTABLE' /binary table extension BITPIX = 8 /8-bit bytes NAXIS = 2 /2-dimensional binary table NAXIS1 = 12 /width of table in bytes NAXIS2 = 196608 /number of rows in table PCOUNT = 0 /size of special data area GCOUNT = 1 /one data group (required keyword) TFIELDS = 3 /number of fields in each row TTYPE1 = 'SPINDEX' /synchrotron spectral index in intensity TFORM1 = 'E ' / data format of field: 4-byte REAL TUNIT1 = ' ' /physical unit of field TTYPE2 = 'SIGMA ' / 1-sigma statistical uncertainty TFORM2 = 'E ' / data format of field: 4-byte REAL TUNIT2 = ' ' /physical unit of field TTYPE3 = 'MASK ' / tha analysis mask (diffuse and sources) TFORM3 = 'E ' / data format of field: 4-byte REAL TUNIT3 = ' ' /physical unit of field EXTNAME = 'Map Table' /name of this binary table extension DATE = '2025-11-17T00:00:00' /Table/MAP creation date PIXTYPE = 'HEALPIX ' /Pixel algorithm ORDERING= 'NESTED ' /Ordering scheme NSIDE = 128 /Resolution parameter FIRSTPIX= 0 /First pixel (0 based) LASTPIX = 196607 /Last pixel (0 based) END
