Rotation Measures from the LOFAR Two Meter Sky Survey LoTSS DR2

Metadata

Identifier

ivo://org.gavo.dc/lotsspol/q/web

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Description

The LOFAR Two Meter Sky Survey LoTSS DR2 (2022A&A...659A...1S) obtained radio data from 27% of the northern sky between 120 and 168 MHz in the year 2014 through 2020. This service publishes polarization spectra of extragalactic radio sources (radio galaxies and blazars) and the rotation measures derived from them. We also give redshifts for all sources. The data has a spatial resolution of 20 arcsec.

Keywords

Creator

O'Sullivan, S.
Shimwell, T. W.
Hardcastle, M. J.
Tasse, C.
Heald, G.
Carretti, E.
Brüggen, M.
Vacca, V.
Sobey, C.
C. L. Van Eck
Horellou, C.
Beck, R.
Bilicki, M.
Bourke, S.
Botteon, A.
Croston, J. H.
Drabent, A.
Duncan, K.
Heesen, V.
Ideguchi, S.
Kirwan, M.
Lawlor, L.
Mingo, B.
Nikiel, B.
Wroczyński, J.
Piotrowska, J.
Scaife, A. M. M.
van Weeren, R. J.

Created

2022-06-07T12:30:55Z

Data updated

2023-01-20T07:33:08Z

Metadata updated

2024-02-06T08:59:19Z

Source

2023arXiv230107697O

Reference URL

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Rotation Measures from the LOFAR Two Meter Sky Survey LoTSS DR2

	accsize -- Size of the data in bytes
	embargo -- Date the data will become/became public
	owner -- Owner of the data
	ssa_bandpass -- Bandpass (i.e., rough spectral location) of this dataset; this should be the most appropriate term from the vocabulary http://www.ivoa.net/rdf/messenger.
	ssa_binSize -- Bin size in wavelength
	ssa_cdate -- Processing/Creation date
	ssa_collection -- A short handle naming the collection this spectrum belongs to.
	ssa_creationtype -- Process used to produce the data (archival, cutout, filtered, mosaic, projection, spectralExtraction, or catalogExtraction)
	ssa_creator -- Creator of the datasets included here.
	ssa_creatorDID -- Dataset identifier assigned by the creator
	ssa_csysName -- System RA and Dec are given in
	ssa_cversion -- Creator assigned version for this dataset (will be incremented when this particular item is changed).
	ssa_datasource -- Method of generation for the data (one of survey, pointed, theory, custom, artificial).
	ssa_dstitle -- A compact and descriptive designation of the dataset.
	ssa_dstype -- Type of data (spectrum, time series, etc)
	ssa_fluxSI -- Flux/magnitude conversion factor in Osuna-Salgado convention
	ssa_fluxStatError -- Statistical error in flux
	ssa_fluxSysError -- Systematic error in flux
	ssa_fluxcalib -- Type of flux calibration (ABSOLUTE, CALIBRATED, RELATIVE, NORMALIZED, or UNCALIBRATED).
	ssa_fluxucd -- UCD of the flux column
	ssa_fluxunit -- Unit of the flux column
	ssa_instrument -- Instrument or code used to produce these datasets
	ssa_length -- Number of points in the spectrum
	ssa_location -- ICRS location of aperture center
	ssa_model -- Data model name and version
	ssa_pdate -- Date last published.
	ssa_pubDID -- Dataset identifier assigned by the publisher
	ssa_publisher -- Publisher of the datasets included here.
	ssa_redshift -- Redshift of target object
	ssa_reference -- URL or bibcode of a publication describing this data.
	ssa_region -- Rough coverage based on location and aperture.
	ssa_snr -- Signal-to-noise ratio estimated for this dataset
	ssa_spaceCalib -- Type of calibration in spatial coordinates
	ssa_spaceError -- Statistical error in position
	ssa_spaceRes -- Spatial resolution of data
	ssa_speccalib -- Type of wavelength calibration
	ssa_specext -- Width of the spectrum
	ssa_specmid -- Midpoint of region covered in this dataset
	ssa_specres -- Resolution (in meters of wavelength) on the spectral axis
	ssa_spectStatError -- Statistical error in wavelength
	ssa_spectSysError -- Systematic error in wavelength
	ssa_spectralSI -- Spectral conversion factor in Osuna-Salgado convention
	ssa_spectralucd -- UCD of the spectral column in the spectra served; when you have wavelengths, use em.wl for vacuum wavelengths, em.wl;obs.atmos for air wavelengths.
	ssa_spectralunit -- Unit of the spectral column
	ssa_targclass -- Object class (star, QSO,...; use Simbad object classification http://simbad.u-strasbg.fr/simbad/sim-display?data=otypes if at all possible)
	ssa_targetpos -- Equatorial (ICRS) position of the target object.
	ssa_timeExt -- Exposure duration
	ssa_timeSI -- Time conversion factor in Osuna-Salgado convention.