Smolčić, VernesaVernesaSmolčićIntema, HuibHuibIntemaŠlaus, BrunoBrunoŠlausRaychaudhury, SomakSomakRaychaudhuryNovak, MladenMladenNovakHorellou, CathyCathyHorellouCHIAPPETTI, LUCIOLUCIOCHIAPPETTIDelhaize, JacintaJacintaDelhaizeBirkinshaw, MarkMarkBirkinshawBONDI, MARCOMARCOBONDIBremer, MalcolmMalcolmBremerCILIEGI, PaoloPaoloCILIEGIFerrari, ChiaraChiaraFerrariKolokythas, KonstantinosKonstantinosKolokythasLidman, ChrisChrisLidmanMcGee, Sean L.Sean L.McGeeNorris, RayRayNorrisPierre, MargueriteMargueritePierreRöttgering, HuubHuubRöttgeringTasse, CyrilCyrilTasseWilliams, WendyWendyWilliams2020-10-052020-10-0520180004-6361http://hdl.handle.net/20.500.12386/27589We present the 25 square-degree GMRT-XXL-N 610 MHz radio continuum survey, conducted at 50 cm wavelength with the Giant Metrewave Radio Telescope (GMRT) towards the XXL Northern field (XXL-N). We combined previously published observations of the XMM-Large Scale Structure (XMM-LSS) field, located in the central part of XXL-N, with newly conducted observations towards the remaining XXL-N area, and imaged the combined data-set using the Source Peeling and Atmospheric Modeling (SPAM) pipeline. The final mosaic encompasses a total area of 30.4 square degrees, with rms <150 μJy beam<SUP>-1</SUP> over 60% of the area. The rms achieved in the inner 9.6 square degree area, enclosing the XMM-LSS field, is about 200 μJy beam<SUP>-1</SUP>, while that over the outer 12.66 square degree area (which excludes the noisy edges) is about 45 μJy beam<SUP>-1</SUP>. The resolution of the final mosaic is 6.5 arcsec. We present a catalogue of 5434 sources detected at ≥7 ×rms. We verify, and correct the reliability of, the catalog in terms of astrometry, flux, and false detection rate. Making use of the (to date) deepest radio continuum survey over a relatively large (2 square degree) field, complete at the flux levels probed by the GMRT-XXL-N survey, we also assess the survey's incompleteness as a function of flux density. The radio continuum sensitivity reached over a large field with a wealth of multi-wavelength data available makes the GMRT-XXL-N 610 MHz survey an important asset for studying the physical properties, environments and cosmic evolution of radio sources, in particular radio-selected active galactic nuclei (AGN). <P />The full catalogue (XXL_GMRT_17) is also available at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr">http://cdsarc.u-strasbg.fr</A> (ftp://130.79.128.5) or via <A href="http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/620/A14">http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/620/A14STAMPAenArticle10.1051/0004-6361/2017323362-s2.0-85057301216000450930100014https://www.aanda.org/articles/aa/full_html/2018/12/aa32336-17/aa32336-17.htmlhttps://arxiv.org/abs/1803.061422018A&A...620A..14SFIS/05 - ASTRONOMIA E ASTROFISICAERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation