Zobrazeno 1 - 10 of 139 pro vyhledávání: '"D. L. Jauncey"'
1
The milliarcsecond-scale radio structure of AB Dor A
Autor: Rebecca Azulay, John Reynolds, J.-F. Lestrade, J. B. Climent, J. M. Marcaide, J. C. Guirado, D. L. Jauncey
Context: The fast rotator, pre-main sequence star AB Dor A is a strong and persistent radio emitter. The extraordinary coronal flaring activity is thought to be the origin of compact radio emission and other associated phenomena as large slingshot pr
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0075234eaa1f743ab84f9e98b9c49573
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2
A Compact Extreme Scattering Event Cloud toward AO 0235+164
Autor: James E. J. Lovell, C. Senkbeil, Simon Ellingsen, Giuseppe Cimo, J. P. Macquart, D. L. Jauncey
Publikováno v: The Astrophysical Journal. 672:L95-L98
We present observations of a rare, rapid, high amplitude Extreme Scattering Event toward the compact BL-Lac AO 0235+164 at 6.65 GHz. The ESE cloud is compact; we estimate its diameter between 0.09 and 0.9 AU, and is at a distance of less than 3.6 kpc
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aaa33ae96e8d2c369c97179a73e413f3
https://doi.org/10.1086/527300
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3
Discovery of Water Maser Emission in Eight AGNs with 70 m Antennas of NASA’s Deep Space Network
Autor: Thomas B. H. Kuiper, José-Luis Gómez, P. T. Kondratko, L. B. Cameron, James E. J. Lovell, E. Moll, I. de Gregorio-Monsalvo, L. J. Greenhill, James M. Moran, Elena Jiménez-Bailón, D. L. Jauncey, C. Garcia-Miro
Publikováno v: The Astrophysical Journal. 638:100-105
We report the discovery of water maser emission in eight active galactic nuclei (AGN) with the 70-m NASA Deep Space Network (DSN) antennas at Tidbinbilla, Australia and Robledo, Spain. The positions of the newly discovered masers, measured with the V
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f14528ad18d25302fc21ffe14ed0ed7b
https://doi.org/10.1086/498641
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4
On the dynamics of the AB Doradus system
Autor: D. L. Jones, Ivan Marti-Vidal, J.-F. Lestrade, J. M. Marcaide, D. L. Jauncey, Wolfgang Brandner, J. C. Guirado, John Reynolds, Laird M. Close, J. C. Algaba, Robert A. Preston
Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2006, 446, pp.733-738. ⟨10.1051/0004-6361:20053757⟩
GUIRADO PUERTA, Jose Carlos ; Marti Vidal, Ivan ; Marcaide Osoro, Juan María ; Close, L.M. ; Algaba, J.C. ; Brandner, W. ; Lestrade, J.-F. ; Jauncey, D.L. ; Jones, D.L. ; Preston, R.A. ; Reynolds, J.E., 2006, On the dynamics of the AB Doradus system, Astronomy and Astrophysics, vol. 442, no. 2, p. 733-738
RODERIC. Repositorio Institucional de la Universitat de Valéncia
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We present an astrometric analysis of the binary systems ABDorA /ABDorC and ABDorBa / ABDorBb. These two systems of well-known late-type stars are gravitationally associated and they constitute the quadruple ABDoradus system. From the astrometric dat
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af8f3fdba5cfafcd045e9b79296f880e
https://doi.org/10.1051/0004-6361:20053757
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5
The variable extragalactic radio universe
Autor: H. E. Bignall, D. L. Jauncey, A. G. de Bruyn
Publikováno v: EAS Publications Series. 15:157-176
We review some of the major achievements of observational studies of extragalactic radio variability since its discovery in the mid-1960s. In the second half of the paper we focus particular attention on developments in our understanding of short-ter
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4f1d2a7dd177f386dddf87cddef057a7
https://doi.org/10.1051/eas:2005151
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7
The Structure of the Gravitational Lens System B1152+199
Autor: James E. J. Lovell, S. Toft, D. L. Jauncey, P. G. Edwards, Hisashi Hirabayashi
Publikováno v: Publications of the Astronomical Society of Australia. 18:172-175
We have commenced a program to monitor the gravitational lens B1152+199 with the Australia Telescope Compact Array (ATCA) to search for variability of the lensed components with the goal of measuring the lensing time delay. As part of this program we
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cf829490bb5c6e551b3ea78a54350bc6
https://doi.org/10.1071/as01013
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8
Accretion and Outflow Traced by H2O Masers in the Circinus AGN
Autor: Anastasios Tzioumis, John Reynolds, P. M. McCulloch, D. L. Jauncey, J. R. Herrnstein, Simon Ellingsen, Ray P. Norris, Roy Booth, L. J. Greenhill, James M. Moran
Publikováno v: Symposium - International Astronomical Union. 205:334-337
The first VLBI images of H2O maser emission in the Circinus Galaxy AGN show both a warped, edge-on accretion disk and an outflow 0.1 to 1 pc from the central engine. The inferred central mass is 1.3 × 106 M⊙, while the disk mass may be on the orde
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::29b33378fc0315ddbf1d87be036e77a0
https://doi.org/10.1017/s0074180900221384
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9
[ITAL]Chandra[/ITAL] Discovery of a 100 kiloparsec X-Ray Jet in PKS 0637−752
Autor: James E. J. Lovell, B. G. Piner, Smita Mathur, George Chartas, Martin Elvis, Mark Birkinshaw, Belinda Jane Wilkes, Herman L. Marshall, Kajal K. Ghosh, Shanil N. Virani, Robert A. Preston, W. H. Tucker, Diana M Worrall, Steven Tingay, E. J. Hooper, Daniel A. Schwartz, Eric D. Feigelson, Kenneth M. Lanzetta, D. L. Jauncey, Hisashi Hirabayashi, D. E. Harris
Publikováno v: The Astrophysical Journal. 540:L69-L72
The quasar PKS 0637-753, the first celestial X-ray target of the Chandra X-ray Observatory, has revealed asymmetric X-ray structure extending from 3 to 12 arcsec west of the quasar, coincident with the inner portion of the jet previously detected in
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::23a6b2633fef17495cdda399350dfeef
https://doi.org/10.1086/312875
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10
Size Of the Vela Pulsar’s Emission Region at 13 Centimeter Wavelength
Autor: P. M. McCulloch, C. S. Flanagan, E. A. King, D. L. Jauncey, Carl R. Gwinn, John Reynolds, James E. J. Lovell, Robert A. Preston, M.C. Britton
Publikováno v: The Astrophysical Journal. 531:902-916
We present measurements of the size of the Vela pulsar in 3 gates across the pulse, from observations of the distribution of intensity. We calculate the effects on this distribution of noise in the observing system, and measure and remove it using ob
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a90602608ab5b94dfa70a0a92ff44685
https://doi.org/10.1086/308474
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