Skip to main content

20 Result(s)

within D. J. Axon Remove this filter

and

  1. No Access

    Chapter and Conference Paper

    The Black Hole Masses in Galactic Nuclei

    We review recent progress in dynamically measuring the black hole masses in nearby galactic nuclei. Some of the outstanding issues for both the gas disk and stellar dynamical methods are outlined and the impac...

    D. J. Axon in The Impact of HST on European Astronomy (2010)

  2. No Access

    Article

    The rotating wind of the quasar PG 1700+518

    Two groups this week present observational evidence to support long-held but unverified theories tackling similar astrophysical problems: the dissipation of angular momentum from accretion disks. Stars form wh...

    S. Young, D. J. Axon, A. Robinson, J. H. Hough, J. E. Smith in Nature (2007)

  3. No Access

    Chapter and Conference Paper

    Spectroscopy of CSS Sources

    Since their discovery, CSS and GPS sources have been growing in relevance. Although their nature is still not well understood, the latest studies show that these sources may be the progenitors of the large-sca...

    A. Labiano, C. P. O’Dea, R. Gelderman… in Highlights of Spanish Astrophysics III (2003)

  4. No Access

    Article

    Large-scale magnetic fields in the outflow from the young stellar object T Tauri S

    T Tauri stars are young stellar objects, similar in mass to the Sun, that are completing the transition between a collapsing cloud and a main-sequence star powered by hydrogen fusion1. Many of these objects are a...

    T. P. Ray, T. W. B. Muxlow, D. J. Axon, A. Brown, D. Corcoran, J. Dyson, R. Mundt in Nature (1997)

  5. No Access

    Chapter and Conference Paper

    Evidence for Magnetic Fields in the Outflow from T Tau S

    We have observed at 5GHz the T Tau system with high resolution (≲ 0”.1) using the Multi-Element Radio Linked Interferometer (MERLIN) based at Jodrell Bank Both the optical star (T Tau N) and its well-known inf...

    T. P. Ray, T. W. B. Muxlow, D. J. Axon… in Herbig-Haro Flows and the Birth of Low Mas… (1997)

  6. No Access

    Chapter and Conference Paper

    The Role of Shocks in the Extended Emission Line Regions of Powerful Radio Galaxies

    A detailed optical spectroscopic study of the extended line-emitting gas in a sample of powerful radio galaxies has revealed clear evidence that fast shocks have a major impact on the state of the warm gas alo...

    N. E. Clark, C. N. Tadhunter, D. J. Axon, A. Robinson in Quasar Hosts (1997)

  7. No Access

    Chapter and Conference Paper

    Radio Outflows and the Origin of the Narrow Line Region in Seyfert Galaxies

    Seven Seyfert galaxies, Mrk 3, Mrk 78, Mrk 348, Mrk 6, Mrk 573, NGC 3393, IRAS 04210+0400 and IRAS 11058-1131 (all Seyfert galaxies type 2 expect Mrk 6 which is a Seyfert 1.5) were observed with HST. For the f...

    A. Capetti, D. J. Axon, F. D. Macchetto, W. B. Sparks in Extragalactic Radio Sources (1996)

  8. No Access

    Chapter and Conference Paper

    IRAS 0421+0400: A Curious Spiral with Flaring Jets

    We present new VLA observations of IRAS 0421+0400 at 1.4 and 5 GHz, providing dual frequency information and higher resolution than previously available. We find extremely accurate alignment of the central dou...

    W. Steffen, A. J. Holloway, A. Pedlar, D. J. Axon in Extragalactic Radio Sources (1996)

  9. No Access

    Chapter and Conference Paper

    Radio and Optical Observations of the Nuclei of Sbc Galaxies

    A sample of 100 Sbc galaxies is being observed at different wavelengths and with high resolution, in order to obtain information about the physical process happening in their nuclei. We present here the compar...

    M. B. Vila, R. D. Davies, D. J. Axon, A. Pedlar, E. Hummel in Windows on Galaxies (1990)

  10. No Access

    Article

    Radio-continuum observations of Sérsic-Pastoriza galaxies

    Preliminary results of radio continuum observations of selected Sérsic-Pastoriza galaxies are presented. Subjects reported are their radio properties at 6 and 20 cm, estimates of linear polarization and spectr...

    G. J. Yates, D. J. Saikia, A. Pedlar, D. J. Axon in Astrophysics and Space Science (1989)

  11. No Access

    Article

    Multifrequency study of the nuclei of Sbc galaxies

    A sample of 100 Sbc galaxies has been observed at different wavelengths and resolutions. The ultimate aim of the project is to probe the origin of their nuclear activity, e.g., blackhole, starbust, etc.

    M. B. Vila, R. D. Davies, A. Pedlar, D. J. Axon… in Astrophysics and Space Science (1989)

  12. No Access

    Chapter and Conference Paper

    A plasmon driven bowshock model for the narrow line region of NGC5929

    D. Taylor, J. E. Dyson, D. J. Axon… in Structure and Dynamics of the Interstellar… (1989)

  13. No Access

    Chapter and Conference Paper

    A study of Sérsic-Pastoriza galaxies

    D. J. Saikia, G. J. Yates, A. Pedlar, D. J. Axon, J. van Gorkom… in Active Galactic Nuclei (1988)

  14. No Access

    Chapter and Conference Paper

    The interaction of radio jets with the narrow line region in Seyfert galaxies

    Long-slit spectroscopic observations of Seyfert galaxies reveal sub-structure in the [OIII] λ5007 emission-line profile. The sub-structure is spatially resolved and located close to the position of the near-nucle...

    M. Whittle, A. Pedlar, E. J. A. Meurs, S. W. Unger, D. J. Axon… in Active Galactic Nuclei (1988)

  15. No Access

    Chapter and Conference Paper

    The Discovery of Blazar-Type Nuclei in Two nearby Radio Ellipticals

    Near infrared polarimetry of Centaurus A and IC5063 has revealed the existence of a steep spectrum highly polarized source in the nuclei of both galaxies. The position angle of polarization is perpendicular to...

    W B Sparks, J Bailey, J C Hough, C Brindle… in Structure and Dynamics of Elliptical Galax… (1987)

  16. No Access

    Article

    Infrared polarimetry of the nucleus of Centaurus A: the nearest blazar?

    As one of the nearest examples of an active galaxy, NGC5128 (Centaurus A) has been studied in detail over a wide range of wavelengths1. The nucleus of the galaxy is seen clearly in the X-ray, radio and infrared, ...

    J. Bailey, W. B. Sparks, J. H. Hough, D. J. Axon in Nature (1986)

  17. No Access

    Chapter and Conference Paper

    Young Supernovae in the Starburst Galaxy M82

    MERLIN observations at 1666 MHz detect 18 compact (< 0.25 arcsec) radio sources within the central few hundred parsecs of M82. M82 is well known as a ‘starburst’ galaxy, and it is probable that these objects a...

    S. W. Unger, A. Pedlar, D. J. Axon, P. N. Wilkinson, P. N. Appleton in Light on Dark Matter (1986)

  18. No Access

    Article

    Discovery of a very red nucleus in the radio elliptical IC5063 (PKS2048 – 57)

    We report here the discovery of an extremely red IR source in the nucleus of the elliptical galaxy IC5063 (PKS2048 – 57). The observed (2.2–3.8) µm colour index within a 5 arc s aperture is 2.1 mag while the c...

    D. J. Axon, Jeremy Bailey, J. H. Hough in Nature (1982)

  19. No Access

    Article

    IR photometry and polarimetry of 2A0311–227

    The X-ray source 2A0311 – 227 has recently been identified with a star whose spectrum1 and polarization properties 2 show it to be an AM Herculis type binary. These binaries are thought to consist of a synchronou...

    J. Bailey, J. H. Hough, D. J. Axon in Nature (1980)

  20. No Access

    Article

    New map of the optical polarisation of galaxy M82

    M82 is the nearest galaxy evidently containing a strong central source of energy, which is possibly similar to the nucleus of a Seyfert galaxy, and this seems to have given rise to an unusual explosive event1. Th...

    R. G. BINGHAM, D. MCMULLAN, W. S. PALLISTER, C. WHITE, D. J. AXON, S. M. SCARROTT in Nature (1976)