Browsing by Author "Birkinshaw, M."

Now showing items 1-20 of 63

    • An active galactic nucleus driven shock in the intracluster medium around the radio galaxy 3C310 

      Kraft, R.P.; Nulsen, P.E.J.; Forman, W.R.; Jones, C.; Murray, S.S.; Birkinshaw, M.; Worrall, D.M.; Croston, J.H.; Hardcastle, M.J. (2012-04-10)
      We present results from a 57.6 ks Chandra observation of the cluster gas associated with the fat-double radio galaxy 3C 310. We find a surface brightness discontinuity in the gas outside the southern radio lobe that we ...

    • ALMA Observations of Ly-alpha Blob 1: Halo Substructure Illuminated from Within 

      Geach, J.~E.; Narayanan, D.; Matsuda, Y.; Hayes, M.; Mas-Ribas, L.; Dijkstra, M.; Steidel, C.~C.; Chapman, S.~C.; Feldmann, R.; Avison, A.; Agertz, O.; Ao, Y.; Birkinshaw, M.; Bremer, M.~N.; Clements, D.~L.; Dannerbauer, H.; Farrah, D.; Harrison, C.~M.; Kubo, M.; Michalowski, M.~J.; Scott, D.; Spaans, M.; Simpson, J.~M.; Swinbank, A.~M.; Taniguchi, Y.; van der Werf, P.; Verma, A.; Yamada, T. (2016-11-14)
      We present new Atacama Large Millimeter/Submillimeter Array (ALMA) 850 μm continuum observations of the original Lyα Blob (LAB) in the SSA22 field at z = 3.1 (SSA22-LAB01). The ALMA map resolves the previously identified ...

    • Cen A and its Interaction with the X-ray Emitting Interstellar Medium 

      Worrall, D.M.; Kraft, R.P.; Birkinshaw, M.; Hardcastle, M.J.; Forman, W.R.; Jones, C.; Murray, S.S. (2004)
      As the closest radio galaxy, Centaurus A is a powerful laboratory for the X-ray study of radio-emitting structures and their interactions with the hot interstellar medium (ISM). This paper details our interpretation of the ...

    • Chandra and XMM-Newton observations of NGC 6251 

      Evans, D.A.; Hardcastle, M.J.; Croston, J.H.; Worrall, D.M.; Birkinshaw, M. (2005)

    • A Chandra detection of the radio hotspot of 3C 123 

      Hardcastle, M.J.; Birkinshaw, M.; Worrall, D.M. (2001-05)

    • Chandra finds that X-ray jets are common in low-power radio galaxies 

      Worrall, D.M.; Birkinshaw, M.; Hardcastle, M.J. (2001-09)

    • Chandra measurements of the X-ray core and cluster of 3C 220.1 

      Worrall, D.M.; Birkinshaw, M.; Hardcastle, M.J.; Lawrence, C.R. (2001-09)

    • A Chandra observation of the X-ray environment and jet of 3c 296 

      Hardcastle, M.J.; Worrall, D.M.; Birkinshaw, M.; Laing, R.A.; Bridle, A.H. (2005-04)

    • A Chandra observation of the X-ray environment and jet of 3C 31 

      Hardcastle, M.J.; Worrall, D.M.; Birkinshaw, M.; Laing, R.A.; Bridle, A.H. (2002-07)
      We have used a deep Chandra observation of the central regions of the twin-jet FRI radio galaxy 3C 31 to resolve the thermal X-ray emission in the central few kiloparsecs of the host galaxy, NGC 383, where the jets are ...

    • Chandra observations of the X-ray jet in 3C 66B 

      Hardcastle, M.J.; Birkinshaw, M.; Worrall, D.M. (2001-10)
      Our Chandra observation of the FRI radio galaxy 3C66B has resulted in the first detection of an X-ray counterpart to the previously known radio, infra-red and optical jet. The X-ray jet is detected up to 7 arcsec from the ...

    • Deep Chandra observations of Pictor A 

      Hardcastle, M. J.; Lenc, E.; Birkinshaw, M.; Croston, J. H.; Goodger, J. L.; Marshall, H. L.; Perlman, E. S.; Siemiginowska, A.; Stawarz, L.; Worrall, D. M. (2016-02-01)
      We report on deep Chandra observations of the nearby broad-line radio galaxy Pictor A, which we combine with new Australia Telescope Compact Array (ATCA) observations. The new X-ray data have a factor 4 more exposure than ...

    • The detection of a population of submillimeter-bright, strongly lensed galaxies 

      Negrello, Mattia; Hopwood, R.; de Zotti, G.; Cooray, A.; Verma, A.; Bock, J.; Frayer, D. T.; Gurwell, M.A.; Omont, A.; Neri, R.; Dannerbauer, H.; Leeuw, L. L.; Barton, E.; Cooke, J.; Kim, S.; da Cunha, E.; Rodighiero, G.; Cox, P.; Bonfield, David G.; Jarvis, M.J.; Serjeant, S.; Ivison, R.J.; Dye, S.; Aretxaga, I.; Hughes, D.H.; Ibar, E.; Bertoldi, F.; Valtchanov, I.; Eales, S.; Dunne, L.; Driver, S. P.; Auld, R.; Buttiglione, S.; Cava, A.; Grady, C.A.; Clements, D. L.; Dariush, A.; Fritz, J.; Hill, D.; Hornbeck, J.B.; Kelvin, L.; Lagache, G.; Lopez-Caniego, M.; Gonzalez-Nuevo, J.; Maddox, S.; Pascale, E.; Pohlen, M.; Rigby, E. E.; Robotham, A.; Simpson, C.; Smith, Daniel; Temi, P.; Thompson, Mark; Woodgate, B.E.; York, D.G.; Aguirre, J.E.; Beelen, A.; Blain, A.; Baker, A.J.; Birkinshaw, M.; Blundell, R.; Bradford, C.M.; Burgarella, D.; Danese, L.; Dunlop, J. S.; Fleuren, S.; Glenn, J.; Harris, A.I.; Kamenetzky, J.; Lupu, R. E.; Maddalena, R. J.; Madore, B. F.; Maloney, P. R.; Matsuhara, H.; Michaowski, M. J.; Murphy, E. J.; Naylor, B.J.; Nguyen, H.; Popescu, C.; Rawlings, S.; Rigopoulou, D.; Scott, D.; Scott, K.S.; Seibert, M.; Smail, I.; Tuffs, R. J.; Vieira, J. D.; van der Werf, P. P.; Zmuidzinas, J. (2010)
      Gravitational lensing is a powerful astrophysical and cosmological probe and is particularly valuable at submillimeter wavelengths for the study of the statistical and individual properties of dusty star-forming galaxies. ...

    • Detection of non-thermal X-ray emission in the lobes and jets of Cygnus A 

      Vries, M. N. de; Wise, M. W.; Huppenkothen, D.; Nulsen, P. E. J.; Snios, B.; Hardcastle, M. J.; Birkinshaw, M.; Worrall, D. M.; Duffy, R. T.; McNamara, B. R. (2018-08-21)
      We present a spectral analysis of the lobes and X-ray jets of Cygnus A, using more than 2 Ms of $\textit{Chandra}$ observations. The X-ray jets are misaligned with the radio jets and significantly wider. We detect non-thermal ...

    • Dynamics of the radio galaxy 3C 449 

      Hardcastle, M.J.; Worrall, D.M.; Birkinshaw, M. (1998)
      We present ROSAT PSPC observations of the twin-jet radio galaxy 3C449. The soft X- ray emission from this object is dominated by an extended halo with a scale comparable to that of the radio source. The asymmetry of the ...

    • The effect of a Chandra-measured merger-related gas component on the lobes of a dead radio galaxy 

      Worrall, D.M.; Birkinshaw, M.; Kraft, R.P.; Hardcastle, M.J. (2007)

    • Equipartition in the hot-spots of 3C 123 

      Hardcastle, M.J.; Birkinshaw, M.; Worrall, D.M. (Astronomical Society of the Pacific, 2001)
      Chandra X-ray Observatory observations of the powerful, peculiar radio galaxy 3C 123 have resulted in an X-ray detection of the bright eastern hot-spot, with a 1-ke V flux density of ~5 nJy. The X-ray flux and spectrum of ...

    • Evidence for Non-Hydrostatic Gas Motions in the Hot Interstellar Medium of Centaurus A 

      Kraft, R.P.; Hardcastle, M.J.; Sivakoff, G.R.; Jordan, A.; Nulsen, P.E.J.; Birkinshaw, M.; Forman, W.R.; Jones, C.; Worrall, D.M.; Croston, J.H.; Evans, D.A.; Raychaudhury, S.; Murray, S.S.; Brassington, Nicola; Goodger, Joanna; Harris, W.E.; Juett, A.M.; Sarazin, C.L.; Woodley, K.A. (2008)
      We present preliminary results from a deep (600 ks) Chandra observation of the hot interstellar medium of the nearby early-type galaxy Centaurus A. We find a surface brightness discontinuity in the gas ~3.5 kpc from the ...

    • Evidence for radio-source heating of groups 

      Croston, J.H.; Hardcastle, M.J.; Birkinshaw, M. (2005-02)

    • Extended X-ray emission from the BL Lac object PKS 0521-365 

      Hardcastle, M.J.; Worrall, D.M.; Birkinshaw, M. (1999)
      Models that seek to unify BL Lacs and low-power radio galaxies predict that the two types of object should show similar isotropically emitted X-ray emission. Testing this is usually limited by difficulties in separating ...

    • The fading of two transient ultraluminous x-ray sources to below the stellar mass Eddington limit 

      Burke, M.J.; Kraft, R.P.; Soria, R.; Maccarone, T. J.; Raychaudhury, S.; Sivakoff, G.R.; Birkinshaw, M.; Brassington, Nicola; Forman, W.R.; Hardcastle, M.J.; Jones, C.; Murray, S.S.; Worrall, D.M. (2013-09-20)
      We report new detections of the two transient ultraluminous X-ray sources (ULXs) in NGC 5128 from an ongoing series of Chandra observations. Both sources have previously been observed L (2-3) × ∼10 erg s, at the lower end ...