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- Tyndall National InstituteIE88 papers
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9 papers · 2 filters
Intermediate Scale Structures in BL Lac objects
C. Reynolds, T. V. Cawthorne, D. C. Gabuzda
The parsec-scale total intensity structures of BL Lac objects share many characteristics with quasars: e.g. well-collimated jets and superluminal motion. However, the jets of BL La…
Polarization and energy content of parsec scale AGN jets
Maxim Lyutikov, Vladimir I. Pariev, Denise C. Gabuzda
Most of energy carried by relativistic AGN jets remains undetected until hundreds of kiloparsecs where interaction with intergalactic medium produces hot spots. The jet's hidden en…
Time-resolved photometry of the nova remnants DM Gem, CP Lac, GI Mon, V400 Per, CT Ser and XX Tau
P. Rodriguez-Gil, M. A. P. Torres
We present the first results of a photometric survey of poorly studied nova remnants in the Northern Hemisphere. The main results are as follows: DM Gem shows a modulation at 0.123…
Detection of hard X-ray pulsations and a strong iron K_beta emission line during an extended low state of GX 1+4
S. Naik, B. Paul, P. J. Callanan
We present here results obtained from a detailed timing and spectral analysis of three BeppoSAX observations of the binary X-ray pulsar GX 1+4 carried out in August 1996, March 199…
Milliarcsec-scale radio structure of a matched sample of Seyfert 1 and Seyfert 2 galaxies
Dharam Vir Lal, Prajval Shastri, Denise C. Gabuzda
We have obtained mas-scale resolution very long baseline interferometry (VLBI) images of a sample of Seyfert 1 and Seyfert 2 galaxies at 5 GHz (wavelength, = 6 cm). The Seyfert…
Polarization and structure of relativistic parsec-scale AGN jets
Maxim Lyutikov, Vladimir I. Pariev, Denise C. Gabuzda
(Abridged) We consider the polarization properties of optically thin synchrotron radiation emitted by relativistically moving electron--positron jets carrying large-scale helical m…