J/A+A/695/A178ivo://CDS.VizieR/J/A+A/695/A178doi:10.26093/cds/vizier/bc-nq/lbhiCDSVardoulaki E.Backoefer V.Finoguenov A.Vazza F.Comparat J.,Gozaliasl G.Whittam I.H.Hale C.L.Weaver J.R.Koekemoer A.M.,Collier J.D.Frank B.Heywood I.Sekhar S.Taylor A.R.Pinjarkar S.,Hardcastle M.J.Shimwell T.Hoeft M.White S.V.An F.Tabatabaei F.,Randriamanakoto Z.Filipovic M.D.2026-07-03T06:36:34Z2025-03-18T11:12:09ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.fractive-galactic-nucleigalaxy-clustersradio-sourcesredshiftedWe studied bent radio sources within X-ray galaxy groups in the COSMOS and XMM-LSS fields. The radio data were obtained from the MeerKAT International GHz Tiered Extragalactic Explorations data release 1 (MIGHTEE-DR1) at 1.2-1.3GHz, with angular resolutions of 8.9" and 5", and median noise levels rms_med_~=3.5 and 5.5uJy/beam. Bent radio active galactic nuclei (AGN) were identified through visual inspection. Our analysis included 19 bent radio AGN in the COSMOS field and 17 in the XMM-LSS field which lie within X-ray galaxy groups (2x10^13^<~M200c/M_{sun}_<=3x10^14^). We investigated the relationship between their bending angle (BA) - the angle formed by the jets or lobes of two-sided radio sources associated with AGN - and the properties of their host galaxies and large-scale environment probed by the X-ray galaxy groups. Our key findings are: a) In the XMM-LSS field, we observed a strong correlation between the linear projected size of the bent AGN, the group halo mass, and the projected distance from the group centre. This trend, consistent with previous studies, was not detected in the COSMOS sample. b) The BA is a function of environmental density, with the type of medium playing a significant role. Additionally, at z<=0.5 we found a higher number of bent sources (BA<=160{deg}) compared to higher redshifts (z~1), by a factor of >1.5. This trend aligns with magnetohydrodynamic simulations, which suggest that denser environments and longer interaction times at lower redshifts contribute to this effect. Comparison with the literature suggests that jet bending in galaxy groups within the redshift range 0.1<z<1.2 is primarily driven by ram pressure exerted on the jets, which occurs during quiescent phases of AGN activity. This study underscores the role of environmental interactions in shaping the morphology of radio AGN within galaxy groups, providing insights into the interplay between large-scale structure and AGN physics.2025A&A...695A.178Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/695/A178CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/695/A178https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/695/A178http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/695/A178https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/695/A178https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/695/A178http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/695/A178GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/695/A178/tableb1 (Properties of bent AGN in XMM-LSS within X-ray galaxy groups)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/695/A178/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/695/A178/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/695/A178/tableb1?GETtext/xml+votable180.050000true33.88255-4.680810.005555555555555556Cone search capability for table J/A+A/695/A178/tableb2 (Properties of bent AGN in COSMOS within X-ray galaxy groups)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/695/A178/tableb2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/695/A178/tableb2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/695/A178/tableb2?GETtext/xml+votable180.050000true150.230382.494830.0055555555555555565/4422 6/17677 17679 17686 17692 17712 27256 27258-272598.613890125444795e-25 8.613890125444795e-25https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/695/A178?format=asciiRadiodefaultJ/A+A/695/A178/tableb1Properties of bent AGN in XMM-LSS within X-ray galaxy groupsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObjectIDThe 1.28GHz radio ID assigned to the source (ObjectID)meta.id;meta.mainintRAJ2000Right Ascension (J2000.0) radio position (Radio_RA(deg.J2000))degpos.eq.ra;meta.mainDEJ2000Declination (J2000.0) radio position (Radio_DEC(deg.J2000))degpos.eq.dec;meta.mainRAHdegRight Ascension (J2000.0) host position (Host_RA(deg.J2000))degpos.eq.raDEHdegDeclination (J2000.0) host position (Host_DEC(deg.J2000))degpos.eq.deczRedshift of the radio source (Redshift)src.redshiftfloatf_z[PS] Redshift flag: S for spectroscopic, P for photometric (redshift_flag)meta.codecharb_z? The lower bounds of the redshift at 68% confidence level (z_l68)src.redshift;stat.minfloatnullableB_z? The upper bounds of the redshift at 68% confidence level (z_u68)src.redshift;stat.maxfloatnullabler_zThe survey from which the redshift value is obtained (z_ref)meta.ref;pos.framecharLASThe largest angular size (LAS) of the radio source (LAS_("))arcsecphys.angSize;stat.maxintSizeThe projected linear size of the radio source, calculated from the largest angular size and the redshift (Size_(kpc))kpcphys.sizeintBAflux? The bending angle, measured from the peak flux positions of the jets/lobes (Bending_Angle_BA_flux(deg.))degsrc.morph.paramintnullableBAedgeThe bending angle, measured from the edges of the jets/lobes (Bending_Angle_BA_edge(deg.))degsrc.morph.paramintFluxDensFlux density at ~1.2-1.3GHz of the radio source (Flux_density_mJy)mJyphot.flux.density;em.radio.750-1500MHzfloatlogL1.4GHzRadio Luminosity at 1.4GHz, calculated using the median frequency at 1.28GHz and a typical radio spectral index of alpha=0.7 (log_10(L_1.4GHz/W/Hz))log(W.Hz**-1)phys.luminosity;em.radiofloatTagsTags that describe the radio morphology (Tags) (1)meta.codecharJ/A+A/695/A178/tableb2Properties of bent AGN in COSMOS within X-ray galaxy groupsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObjectIDThe 1.28GHz radio ID assigned to the source (ObjectID)meta.id;meta.mainintRAJ2000Right Ascension (J2000.0) radio position (Radio_RA(deg.J2000))degpos.eq.ra;meta.mainDEJ2000Declination (J2000.0) radio position (Radio_DEC(deg.J2000))degpos.eq.dec;meta.mainRAHdegRight Ascension (J2000.0) host position (Host_RA(deg.J2000))degpos.eq.raDEHdegDeclination (J2000.0) host position (Host_DEC(deg.J2000))degpos.eq.deczRedshift of the radio source (Redshift)src.redshiftfloatf_z[PS] Redshift flag: S for spectroscopic, P for photometric (redshift_flag)meta.codecharb_z? The lower bounds of the redshift at 68% confidence level (z_l68)src.redshift;stat.minfloatnullableB_z? The upper bounds of the redshift at 68% confidence level (z_u68)src.redshift;stat.maxfloatnullabler_zThe survey from which the redshift value is obtained (z_ref)meta.ref;pos.framecharLASThe largest angular size (LAS) of the radio source (LAS_("))arcsecphys.angSize;stat.maxintSizeThe projected linear size of the radio source, calculated from the largest angular size and the redshift (Size_(kpc))kpcphys.sizeintBAflux? The bending angle, measured from the peak flux positions of the jets/lobes (Bending_Angle_BA_flux(deg.))degsrc.morph.paramintnullableBAedgeThe bending angle, measured from the edges of the jets/lobes (Bending_Angle_BA_edge(deg.))degsrc.morph.paramintFluxDensFlux density at ~1.2-1.3GHz of the radio source (Flux_density_mJy)mJyphot.flux.density;em.radio.750-1500MHzfloatlogL1.4GHzRadio Luminosity at 1.4GHz, calculated using the median frequency at 1.28GHz and a typical radio spectral index of alpha=0.7 (log_10(L_1.4GHz/W/Hz))log(W.Hz**-1)phys.luminosity;em.radiofloatTagsTags that describe the radio morphology (Tags) (1)meta.codechar