Browsing by Author "Mingo, B."

Now showing items 21-33 of 33

    • Markarian 6 : shocking the environment of an intermediate Seyfert 

      Mingo, B.; Hardcastle, M.J.; Croston, J.H.; Evans, D.A.; Hota, A.; Kharb, P.; Kraft, R.P. (2011)
      Markarian 6 is a nearby (D ~ 78 Mpc) Seyfert 1.5, early-type galaxy, with a double set of radio bubbles. The outer set spans similar to 7.5 kpc and is expanding into the halo regions of the host galaxy. We present an ...

    • The MIXR sample: AGN activity versus star formation across the cross-correlation of WISE, 3XMM, and FIRST/NVSS 

      Mingo, B.; Watson, M. G.; Rosen, S. R.; Hardcastle, M. J.; Ruiz, A.; Blain, A.; Carrera, F. J.; Mateos, S.; Pineau, F. X.; Stewart, G. C. (2016-11-01)
      We cross-correlate the largest available Mid-Infrared (WISE), X-ray (3XMM) and Radio (FIRST+NVSS) catalogues to define the MIXR sample of AGN and star-forming galaxies. We pre-classify the sources based on their positions ...

    • The nature of compact radio-loud AGN: a systematic look at the LOFAR AGN population 

      Chilufya, J.; Hardcastle, M. J.; Pierce, J. C. S.; Croston, J. H.; Mingo, B.; Zheng, X.; Baldi, R. D.; Röttgering, H. J. A. (2024-03-05)
      We investigate the nature of low-luminosity radio-loud active galactic nuclei (RLAGN) selected from the LOFAR Two-metre Sky Survey (LoTSS) first data release (DR1). Using optical, mid-infrared, and radio data, we have ...

    • A new method for finding and characterizing galaxy groups via low-frequency radio surveys 

      Croston, J. H.; Ineson, J.; Hardcastle, M. J.; Mingo, B. (2017-09-11)
      We describe a new method for identifying and characterizing the thermodynamic state of large samples of evolved galaxy groups at high redshifts using high-resolution, low-frequency radio surveys, such as those that will ...

    • A population of galaxy-scale jets discovered using LOFAR 

      Webster, B.; Croston, J. H.; Mingo, B.; Baldi, R. D.; Barkus, B.; Gurkan, G.; Hardcastle, M. J.; Morganti, R.; Rottgering, H. J. A.; Sabater, J.; Shimwell, T. W.; Tasse, C.; White, G. J. (2020-11-05)
      The effects of feedback from high luminosity radio-loud AGN have been extensively discussed in the literature, but feedback from low-luminosity radio-loud AGN is less well understood. The advent of high sensitivity, high ...

    • Radio-loud AGN in the first LoTSS data release: The lifetimes and environmental impact of jet-driven sources 

      Hardcastle, M. J.; Williams, W. L.; Best, P. N.; Croston, J. H.; Duncan, K. J.; Rottgering, H. J. A.; Sabater, J.; Shimwell, T. W.; Tasse, C.; Callingham, J. R.; Cochrane, R. K.; Gasperin, F. de; Gurkan, G.; Jarvis, M. J.; Mahatma, V.; Miley, G. K.; Mingo, B.; Mooney, S.; Morabito, L. K.; O'Sullivan, S. P.; Prandoni, I.; Shulevski, A.; Smith, D. J. B. (2018-11-19)
      We constructed a sample of 23,344 radio-loud active galactic nuclei (RLAGN) from the catalogue derived from the LOFAR Two-Metre Sky Survey (LoTSS) survey of the HETDEX Spring field. Although separating AGN from star-forming ...

    • Revisiting the Fanaroff-Riley dichotomy and radio-galaxy morphology with the LOFAR Two-Metre Sky Survey (LoTSS) 

      Mingo, B.; Croston, J. H.; Hardcastle, M. J.; Best, P. N.; Duncan, K. J.; Morganti, R.; Rottgering, H. J. A.; Sabater, J.; Shimwell, T. W.; Williams, W. L.; Brienza, M.; Gurkan, G.; Mahatma, V. H.; Morabito, L. K.; Prandoni, I.; Bondi, M.; Ineson, J.; Mooney, S. (2019-09-01)
      The relative positions of the high and low surface brightness regions of radio-loud active galaxies in the 3CR sample were found by Fanaroff and Riley to be correlated with their luminosity. We revisit this canonical ...

    • Shocks, seyferts, and the supernova remnant connection : A chandra observation of the circinus galaxy 

      Mingo, B.; Hardcastle, M.J.; Croston, J.H.; Evans, D.A.; Kraft, R.P.; Kharb, P.; Lenc, E. (2012-10-20)
      We analyze new Chandra observations of the nearest (D = 4 Mpc) Seyfert 2 active galaxy, Circinus, and match them to pre-existing radio, infrared, and optical data to study the kpc-scale emission. The proximity of Circinus ...

    • Spitzer MID-IR spectroscopy of powerful 2Jy and 3CRR radio galaxies. II : Agn power indicators and unification 

      Dicken, D.; Tadhunter, C.; Morganti, R.; Robinson, A.; Magagnoli, M.; Kharb, P.; Ramos Almeida, C.; Mingo, B.; Hardcastle, M.J.; Nesvadba, N. P. H.; Singh, V.; Kouwenhoven, M. B. N.; Rose, M.; Spoon, H.; Inskip, K. J.; Holt, J. (2014-06-20)
      It remains uncertain which continuum and emission line diagnostics best indicate the bolometric powers of active galactic nuclei (AGNs), especially given the attenuation caused by the circumnuclear material and the possible ...

    • V-LoTSS: The circularly polarised LOFAR Two-metre Sky Survey 

      Callingham, J.~R.; Shimwell, T.~W.; Vedantham, H.~K.; Bassa, C.~G.; O'Sullivan, S.~P.; Yiu, T.~W.~H.; Bloot, S.; Best, P.~N.; Hardcastle, M.~J.; Haverkorn, M.; Kavanagh, R.~D.; Lamy, L.; Pope, B.~J.~S.; Röttgering, H.~J.~A.; Schwarz, D.~J.; Tasse, C.; van Weeren, R.~J.; White, G.~J.; Zarka, P.; Bomans, D.~J.; Bonafede, A.; Bonato, M.; Botteon, A.; Bruggen, M.; Chyży, K.~T.; Drabent, A.; Emig, K.~L.; Gloudemans, A.~J.; Gürkan, G.; Hajduk, M.; Hoang, D.~N.; Hoeft, M.; Iacobelli, M.; Kadler, M.; Kunert-Bajraszewska, M.; Mingo, B.; Morabito, L.~K.; Nair, D.~G.; Pérez-Torres, M.; Ray, T.~P.; Riseley, C.~J.; Rowlinson, A.; Shulevski, A.; Sweijen, F.; Timmerman, R.; Vaccari, M.; Zheng, J. (2023-02-17)
      We present the detection of 68 sources from the most sensitive radio survey in circular polarisation conducted to date. We used the second data release of the 144 MHz LOFAR Two-metre Sky Survey to produce circularly polarised ...

    • Very Large Baseline Array observations of Mrk 6 : probing the jet-lobe connection 

      Kharb, P.; O'Dea, C.P.; Baum, S.A.; Hardcastle, M.J.; Dicken, D.; Croston, J. H.; Mingo, B.; Noel-Storr, J. (2014-06-01)
      We present the results of high-resolution VLBI (very long baseline interferometry) observations at 1.6 and 4.9 GHz of the radio-loud Seyfert galaxy, Mrk 6. These observations are able to detect a compact radio core in this ...

    • An X-ray survey of the 2 Jy sample - II. X-ray emission from extended structures 

      Mingo, B.; Hardcastle, M. J.; Ineson, J.; Mahatma, V.; Croston, J. H.; Dicken, D.; Evans, D. A.; Morganti, R.; Tadhunter, C.N. (2017-09-21)
      The 2 Jy sample is a survey of radio galaxies with flux densities above 2 Jy at 2.7 GHz. As part of our ongoing work on the southern subset of 2 Jy sources, in paper I of this series we analysed the X-ray cores of the ...

    • An X-ray survey of the 2 Jy sample-I : Is there an accretion mode dichotomy in radio-loud AGN? 

      Mingo, B.; Hardcastle, M.J.; Croston, J.H.; Dicken, D.; Evans, D. A.; Morganti, R.; Tadhunter, C. (2014-05-01)
      We carry out a systematic study of the X-ray emission from the active nuclei of the 0.02 < z< 0.7 2 Jy sample, using Chandra and XMM-Newton observations.We combine our results with those from mid-infrared, optical emission-line ...