lotsspol.rmtableA table of rotation measures derived
from the content of lotsspol.spectra. This is supposed to be in line with
RMTable version 1, https://github.com/CIRADA-Tools/RMTable.2461cat_idSource ID in catalogmeta.id;meta.mainshortraRight Ascension [ICRS] of the polarised emission at epoch (this will often be an one extremity of the radio source).degpos.eq.ra;meta.maindoublenullabledecDeclination [ICRS] of the polarised emission at epoch (this will often be an one extremity of the radio source).degpos.eq.dec;meta.maindoublenullabledatalinkDatalink for the spectrummeta.ref.urlcharnullablermRotation measurerad.m**-2phys.polarization.rotMeasure;meta.mainfloatnullablerm_errTotal error in RMrad.m**-2stat.error;phys.polarization.rotMeasuredoublenullablerm_err_snrError in RM from signal to noise ratio onlyrad.m**-2stat.error;phys.polarization.rotMeasuredoublenullablepolintPolarized intensityJyphot.flux.density;phys.polarization.lineardoublenullablepolint_errError in Polarised IntensityJystat.error;phot.flux.density;phys.polarization.linearfloatnullablefracpolFractional (linear) polarizationphys.polarization.lineardoublenullablefracpol_errError in fractional polarizationstat.error;phys.polarization.linearfloatnullablermsf_fwhmFull-width at half maximum of the RMSFrad.m**-2instr.rmsf;stat.fwhmfloatnullablereffreq_polReference frequency for polarizationHzem.freq;phys.polarizationfloatnullablelGalactic Longitudedegpos.galactic.londoublenullablebGalactic Latitudedegpos.galactic.latdoublenullablepos_errPosition uncertaintydegstat.error;posdoublenullablebeamdistDistance from beam centre (taken as centre of tile)degpos.angDistance;instr.beamfloatnullablecatnameName of catalog this was taken from.meta.notecharnullablecomplex_flagFaraday complexity flagmeta.codecharnullablecomplex_testFaraday complexity metricmeta.notecharnullablerm_methodRM determination methodmeta.notecharnullableionosphereIonospheric correction methodmeta.notecharnullablepol_biasPolarization bias correction methodmeta.notecharnullableflux_typeStokes extraction methodmeta.notecharnullablebeam_majBeam major axisdegpos.angResolution;instr.beam;phys.angSize.smajAxisfloatnullablebeam_minBeam minor axisdegpos.angResolution;instr.beam;phys.angSize.sminAxisfloatnullablebeam_paBeam position angledegpos.angResolution;instr.beam;pos.posAngfloatnullablereffreq_beamReference frequency for beamHzem.freq;instr.beamfloatnullableminfreqLowest frequencyHzem.freq;stat.minfloatnullablemaxfreqHighest frequencyHzem.freq;stat.maxfloatnullablechannelwidthTypical channel widthHzem.freq;instr.bandwidthfloatnullablenoise_chanTypical per-channel noise in Q;UJystat.error;instr.det.noisefloatnullabletelescopeName of Telescope(s)instr.telcharnullableint_timeIntegration timestime.duration;obs.exposurefloatnullableepoch_mjdMedian epoch of observationdtime.epochdoublenullableobs_intervalInterval of observationdtime.intervalfloatnullableleakageInstrumental leakage estimatephys.polarization.linearfloatnullabledatarefData referencesmeta.bib.bibcodecharnullablenotesNotesmeta.notecharnullablereffreq_iReference frequency for Stokes IHzem.freq;phys.polarization.stokes.IfloatnullablefieldLoTSS observation pointing namemeta.id;obs.fieldcharnullablexx-pixel coordinate within an individual LoTSS field, ranging from 0 to 3200, for a pixel width of 4.5 arcsecpixelpos.cartesian.x;instr.detshortyy-pixel coordinate within an individual LoTSS field, ranging from 0 to 3200, for a pixel height of 4.5 arcsecpixelpos.cartesian.y;instr.detshortsnr_rmtools_madSignal to noise ratio based the peak polarized intensity divided by the estimated noise in the Faraday depth spectrum (where the noise is computed using the median deviation from the median of the polarized intensity, and then correcting to be equivalent to a Gaussian sigma).stat.snr;phot.flux;phys.polarizationdoublenullablera_nvssRA of the object in NVSSdegpos.eq.radoublenullabledec_nvssDec of the object in NVSSdegpos.eq.decdoublenullablenvss_rmRotation measure of the object in NVSSrad.m**-2phys.polarization.rotMeasurefloatnullablenvss_rm_errError in rotation measure of the object in NVSSrad.m**-2stat.error;phys.polarization.rotMeasurefloatnullablei_nvssIntegrated Stokes I flux density from NVSSmJyphot.flux;phys.polarization.stokes.Ifloatnullablep_nvssAverage peak polarized intensity from NVSSmJyphot.flux;phys.polarization.stokes.Ifloatnullablepi_nvssPercent polarization from NVSSphys.polarization;arith.ratiofloatnullableseparation_nvssDifference between NVSS position and LoTSS DR2 positionarcsecpos.angDistancedoublenullablelgz_sizeLargest angular size of the sourcearcsecphys.angsize;stat.maxdoublenullablezphotPhotometric redshift derived here from archive photometry (WISE, PanSTARRS, etc; cf. 2021A&A...648A...4D).src.redshift.photdoublenullablezphot_errError in zphotstat.error;src.redshift.photdoublenullablephot_spec_z_bestNature of z_best: 0: phot, 1: specmeta.code;src.redshiftshortlgz_ra_degRA of the host galaxy, mainly from NED.degpos.eq.radoublenullablelgz_dec_degDec of the host galaxy, mainly from NED.degpos.eq.decdoublenullablez_bestBest redshift available from the literature, typically from NED.src.redshiftdoublenullablenum_in_fieldNumber of polarized sources in the originating pointing.meta.number;srcshortmedrmMedian RM in the originating pointing.rad.m**-2phys.polarization.rotMeasure;stat.medianfloatnullablemadrmMedian absolute deviation of RM in the originating pointing.rad.m**-2stat.mad;phys.polarization.rotMeasurefloatnullablemedfpolMedian degree of polarization in the originating pointing (percent).phys.polarization;stat.medianfloatnullablemadfpolMedian absolute deviation of degree of polarization in the originating pointing (percent).stat.mad;phys.polarizationfloatnullablera_centreRA of field centredegpos.eq.ra;obs.fielddoublenullabledec_centreDec of field centredegpos.eq.dec;obs.fielddoublenullablenchanNumber of channels used in RM derivationmeta.number;em.binintnullablesource_name_dr2Official source name assigned by the International LOFAR Telescope ILT.meta.idcharnullablera_dr2LoTSS DR2 RA of the centroid of the total radio intensity using pyBDSF.degpos.eq.radoublenullabledec_dr2LoTSS DR2 Dec of the centroid of the total radio intensity using pyBDSF.degpos.eq.decdoublenullablee_ra_dr2Error in ra_dr2degstat.error;pos.eq.radoublenullablee_dec_dr2Error in dec_dr2degstat.error;pos.eq.decdoublenullabletotal_flux_dr2Total radio flux at 144 MHz from pyBDSF.Jyphot.flux;em.radiodoublenullablee_total_flux_dr2Error in total_flux_dr2Jystat.error;phot.flux;em.radiodoublenullablemaj_dr2Semimajor axis of the radio emissionarcsecphys.angSize.smajAxisdoublenullablemin_dr2Semiminor axis of the radio emissionarcsecphys.angSize.sminAxisdoublenullablepa_dr2Position angle of the radio emission, north over westdegpos.posAngdoublenullablel144Spectral luminosity at 144 MHz in the rest frame of the sourceW.Hz**-1phys.luminositydoublenullablelinearsize_kpcProjected largest linear sizekpcphys.sizedoublenullablerrmThe residual RM after subtraction of the average Galactic RM within an aperture of radius 1 degree (see the grm column).rad.m**-2phys.polarization.rotMeasure;src.netdoublenullablegrmAverage Galactic RM within an aperture of radius 1 degree from the Garching Faraday rotation sky v2.rad.m**-2phys.polarization.rotMeasuredoublenullablegrmerrError in grm.rad.m**-2stat.error;phys.polarization.rotMeasuredoublenullablebzcat_nameBlazar source name in the ROMA-BZCAT catalogue (2015Ap&SS.357...75M)meta.id.crosscharnullable