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19932026
most citedThe Gaia mission

7.1k citations

Showing 1999 · astro-phShow all

34 papers · 2 filters

astro-ph1999★ 4 cited

Discovery of Two High-Magnetic-Field Radio Pulsars

V. M. Kaspi, F. Camilo, A. G. Lyne +5

We report the discovery of two isolated radio pulsars having the largest inferred surface dipole magnetic fields yet seen in the population: 4.1e10^13 G and 5.5e10^13 G. These puls…

astro-ph1999

VLBI observations of 3C273 at 22 GHz and 43 GHz. II: test of Synchrotron Self-Compton process

F. Mantovani, W. Junor, I. M. McHardy +1

The VLBI observations at 22 GHz and 43 GHz of the quasar 3C273 obtained during a multi-frequency campaign in late 1992 in the radio, millimetre and X-ray bands allow us to derive t…

astro-ph1999

The CERES Astronomical Database

Xanthopoulos, N. J. Jackson, I. Snellen +2

The CERES Astronomical Archive was created initially in order to make the large amount of data that were collected from the two surveys, the Jodrell-VLA Astrometric Survey (JVAS) a…

astro-ph1999

A Cluster Deficit in the ROSAT NEP Survey

Isabella Gioia

We have used data from the deepest region of the ROSAT All-Sky Survey, the North Ecliptic Pole (NEP) region, to produce a complete and unbiased X-ray selected sample of distant clu…

astro-ph1999

The Parkes Multibeam Pulsar Survey: preliminary results

N. D'Amico, A. G. Lyne, R. N. Manchester +7

A high-frequency survey of the Galactic plane for radio pulsars is in progress, using the multibeam receiver on the 64-m Parkes radiotelescope. We describe the survey motivations,…

astro-ph1999★ 91 cited

The Parkes Multibeam Pulsar Survey: PSR J1811-1736 - a pulsar in a highly eccentric binary system

A. G. Lyne, F. Camilo, R. N. Manchester +8

We are undertaking a high-frequency survey of the Galactic plane for radio pulsars, using the 13-element multibeam receiver on the 64-m Parkes radio telescope. We describe briefly…

astro-ph1999★ 5 cited

BeppoSAX observations of two high redshift clusters of galaxies: RXJ0152.7-1357 and MS2053.7-0449

R. Della Ceca, R. Scaramella, I. M. Gioia +3

We present X-ray observations of two high redshift clusters of galaxies carried out with the BeppoSAX satellite. One cluster, RXJ0152.7-1357 at z = 0.83, was selected from the ROSA…

astro-ph1999★ 33 cited

The lives of FR I radio galaxies

P. Parma, M. Murgia, H. R. de Ruiter +1

After a brief introduction to the morphological properties of FRI radio sources, we discuss the possibility that FRI jets are relativistic at their bases and decelerate quickly to…

astro-ph1999

RXJ1716.6+6708: a protocluster at z=0.81?

Isabella M. Gioia

At z=0.809, RXJ1716.6+6708 is the second most distant X-ray selected cluster so far published and the only one with a large number of spectroscopically determined cluster member ve…

astro-ph1999★ 34 cited

HI in four star-forming low-luminosity E/S0 and S0 galaxies

E. Sadler, T. Oosterloo, R. Morganti

We present HI data cubes of four low-luminosity early-type galaxies which are currently forming stars. These galaxies have absolute magnitudes in the range M_B=-17.9 to -19.9 (H_o=…

astro-ph1999★ 57 cited

The radio structures of southern 2-Jy radio sources: new ATCA and VLA radio images

R. Morganti, T. Oosterloo, C. N. Tadhunter +3

We present new radio images obtained with the Australia Telescope Compact Array (ATCA) and the Very Large Array (VLA) for a group of 14 galaxies belonging to the 2-Jy sample of rad…

astro-ph1999★ 32 cited

The Extreme Scattering Event Toward PKS 1741-038: VLBI Images

T. Joseph W. Lazio, A. L. Fey, Brian Dennison

(Abridged) We report multi-epoch VLBI observations of the source PKS 1741-038 as it underwent an extreme scattering event. Observations at four epochs were obtained, and images wer…

astro-ph1999★ 2 cited

Restarting activity in radio galaxies

L. Lara, G. Giovannini, W. D. Cotton +5

We present observations of two radio galaxies, J1835+620 and 3C338, both with signs of having passed through different stages of core activity. The former presents two symmetric an…

astro-ph1999

The 408 MHz B3.1 Survey

M. Pedani, G. Grueff

We present a new 408 MHz survey (B3.1) carried out with the ''Croce del Nord'' radiotelescope in Bologna. The survey coordinates limits are to $+2^\circ 15^\pr…

astro-ph1999★ 39 cited

Anisotropic inverse Compton scattering from the trans-relativistic to the ultra-relativistic regime and application to the radio galaxies

G. Brunetti

The problem of the anisotropic Inverse Compton scattering between a monochromatic photon beam and relativistic electrons is revisited and formally solved without approximations. So…

astro-ph1999★ 17 cited

The galactic magnetic field in the quasar 3C216

T. Venturi, G. B. Taylor

Multifrequency polarimetric observations made with the Very Long Baseline Array of the quasar 3C216 reveal the presence of Faraday rotation measures (RMs) in excess of 2000 rad/m**…

astro-ph1999

Radio Observations of Merging Clusters in the Shapley Concentration

T. Venturi, S. Bardelli, G. Zambelli +2

In this paper we present the first results of a radio survey at 22 cm in the central region of the Shapley Concentration, carried out with the Australia Telescope Compact Array. In…

astro-ph1999★ 9 cited

Restarting activity in the giant radio galaxy J1835+620

L. Lara, I. Marquez, W. D. Cotton +4

We present radio and optical observations of the peculiar radio galaxy J1835+620, a member of a new sample of large angular size radio galaxies selected from the NRAO VLA Sky Surve…

astro-ph1999★ 53 cited

Spectral Analysis of the Stromlo-APM Survey II. Galaxy luminosity function and clustering by spectral type

J. Loveday, L. Tresse, S. Maddox

We study the luminosity function and clustering properties of subsamples of local galaxies selected from the Stromlo-APM survey by the rest-frame equivalent widths of their Halpha…

astro-ph1999★ 94 cited

Spectral Analysis of the Stromlo-APM Survey I. Spectral Properties of Galaxies

L. Tresse, S. Maddox, J. Loveday +1

We analyze spectral properties of 1671 galaxies from the Stromlo-APM survey, selected to have 15 < b_J < 17.15 and having a mean redshift z = 0.05. This is a representative local s…

astro-ph1999★ 105 cited

Radio Continuum Morphology of Southern Seyfert Galaxies

R. Morganti, Z. I. Tsvetanov, J. Gallimore +1

We present radio observations for 29 southern Seyfert galaxies selected from a volume limited sample with cz<3600 km s^-1, and declination delta<0degr. Objects with declination -30…

astro-ph1999★ 21 cited

Synchrotron Spectra and Ages of Compact Steep Spectrum Radio Sources

M. Murgia, C. Fanti, R. Fanti +4

The high-frequency integrated spectra of Compact Steep Spectrum (CSS) sources show breaks with a moderate spectral steepening well fitted by continuous injection synchrotron spectr…

astro-ph1999★ 317 cited

Radio Halo and Relic Candidates from the NRAO VLA Sky Survey

G. Giovannini, M. Tordi, L. Feretti

We present the first results of the search of new halo and relic candidates in the NRAO VLA Sky Survey. We have inspected a sample of 205 clusters from the X-ray-brightest Abell-ty…

astro-ph1999★ 1 cited

B2 1144+35: A Giant Low Power Radio Galaxy with Superluminal Motion

G. Giovannini, G. B. Taylor, E. Arbizzani +5

We report on centimeter VLA and VLBI observations of the giant, low power radio galaxy 1144+35. These observations are sensitive to structures on scales from less than 1 parsec to…