Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Bill Cotton"'
Autor:
Bill Cotton, K. Assaf, P. J. Diamond, Liz Humphreys, Anita M. S. Richards, Malcolm Gray, Markus Wittkowski, Sandra Etoka
Publikováno v:
Proceedings of 14th European VLBI Network Symposium & Users Meeting — PoS(EVN2018).
A detailed analysis of 23 epochs (covering two stellar cycles) of monitoring R Cas SiO J=1-0 v=1 masers showed 184 maser features (an average of 20% per epoch) could be matched over between 3 and 13 epochs. The largest number of matches occur in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::419e52482bebe150095064c13f01e5c5
https://doi.org/10.22323/1.344.0070
https://doi.org/10.22323/1.344.0070
Autor:
D. Kunneriath, A. Wootten, M. Royster, Rainer Schödel, Mark Wardle, Bill Cotton, Farhad Yusef-Zadeh, D. A. Roberts
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
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Using the Very Large Array (VLA), we recently detected a large number of protoplanetary disc (proplyd) candidates lying within a couple of light years of the massive black hole Sgr A*. The bow-shock appearance of proplyd candidates points towards the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb9d7bd6241242c2a9d867069c5acf24
http://arxiv.org/abs/1701.05939
http://arxiv.org/abs/1701.05939
Autor:
Geoffrey C. Bower, Nathalie Degenaar, Daryl Haggard, Daniel M. Capellupo, Heino Falcke, Sera Markoff, Nanda Rea, Nicolas Choux, Frederick K. Baganoff, Craig O. Heinke, Jason Dexter, P. Chris Fragile, Bill Cotton, Farhad Yusef-Zadeh, Casey J. Law, Gabriele Ponti, J. Neilsen
Publikováno v:
The Astrophysical Journal, 845, 1-13
Astrophysical Journal, 845(1):35. IOP Publishing Ltd.
The Astrophysical Journal, 845, 1, pp. 1-13
Astrophysical Journal, 845(1):35. IOP Publishing Ltd.
The Astrophysical Journal, 845, 1, pp. 1-13
Monitoring of Sagittarius A* from X-ray to radio wavelengths has revealed structured variability --- including X-ray flares --- but it is challenging to establish correlations between them. Most studies have focused on variability in the X-ray and in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::939492994b017ca08c7f71ba056a6de7
https://hdl.handle.net/11245.1/131996f4-4f7b-446e-8dd7-e82c7a6bc23b
https://hdl.handle.net/11245.1/131996f4-4f7b-446e-8dd7-e82c7a6bc23b
Publikováno v:
Astronomy & Astrophysics. 415:905-913
We present new multi-frequency EVN, MERLIN and VLA observations of the radio source 3C264, sensitive to linear scales ranging from the parsec to several kiloparsecs. The observations confirm the existence of regions with different properties in the f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2d0c1962a7fb8f563b03ea20b0b4f46
https://doi.org/10.1051/0004-6361:20034317
https://doi.org/10.1051/0004-6361:20034317
Autor:
Huib Jan van Langevelde, Bill Cotton
Publikováno v:
NASA Astrophysics Data System
We have been looking into the possibility to subtract out the continuum contribution in spectral line databases from the ungridded visibilities. It turns out that our simple method offers quite interesting possibilities in a lot of practical cases. I
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::163f73c07e43e9dccb3798dfef2d9a36
https://doi.org/10.1017/s0252921100013440
https://doi.org/10.1017/s0252921100013440
Autor:
Rens Waters, Björn Heijligers, Bill Cotton, Eric J. Bakker, Isabelle Percheron, Luigi D'Arcio, Wilfried Boland, J. Meisner, Roy van Boekel, Andreas Glindemann, Jeroen de Jong, Huub Röttgering, Rudolf S. Le Poole, Dap Hartmann, George K. Miley, Walter Jaffe
Publikováno v:
ESO ASTROPHYSICS SYMPOSIA ISBN: 354043755X
Scientific Drivers for ESO Future VLT/VLTI Instrumentation ISBN: 9783662432174
Scientific Drivers for ESO Future VLT/VLTI Instrumentation ISBN: 9783662432174
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::659a07f24d0f46ff1f8c4ae490c4b44b
https://doi.org/10.1007/10857019_56
https://doi.org/10.1007/10857019_56
Autor:
Jeffrey A. Meisner, Olivier Chesneau, Eric J. Bakker, Walter Jaffe, Christoph Leinert, Annelie W. Glazenborg-Kluttig, Bill Cotton, Isabelle Percheron, Frank Przygodda, Jeroen de Jong, Guy Perrin, Jan-Willem Pel, Uwe Graser
Publikováno v:
SPIE Proceedings.
The first science instrument for the Very Large Telescope Interferometer (VLTI), the Mid-infrared instrument MIDI, will be commissioned in November 2002 with anticipated first fringe during that commissioning run on the 40-cm Siderostats and the 8.2-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98be36690ea60446b88572e04c74af49
https://doi.org/10.1117/12.459955
https://doi.org/10.1117/12.459955
Autor:
Luigi D'Arcio, Rens Waters, Jeffrey A. Meisner, Walter Jaffe, Rudolf S. Le Poole, Jeroen de Jong, Andreas Glindemann, Bjoern Heijligers, George H. Miley, Eric J. Bakker, Bill Cotton, Isabelle Percheron, Huub Roettgering
Publikováno v:
SPIE Proceedings.
This paper gives an overview of the NOVA ESO VLTI Expertise Centre (NEVEC) activities which include work on MIDI, PRIMA, next generation VLTI instruments, VLTI’s calibrators program, instrument models, data formats, commissioning, education, algori
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d1ec72cf722f4a1bd0a4679ac74bce0
https://doi.org/10.1117/12.459971
https://doi.org/10.1117/12.459971
Publikováno v:
Executive Development. 7:27-29
Discusses the launch of a public/private sector partnership in Leeds – Opp 2k. Explores why organizations should balance their workforces and how this can be achieved. Opp 2k exists to share work practices which contribute to the increase and impro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aad8c55e7e1c1554370a643bc885d91b
https://doi.org/10.1108/09533239410058855
https://doi.org/10.1108/09533239410058855
Autor:
Walter Jaffe, Sebastiano Ligori, Guy Perrin, Bruno Lopez, Werner Laun, L.B.F.M. Waters, Frank Przygodda, Olivier Chesneau, Clemens Storz, Annelie W. Glazenborg-Kluttig, Karl Wagner, Bill Cotton, Uwe Graser, Udo Neumann, Christoph Leinert, Jeffrey A. Meisner, Richard J. Mathar, Peter Schuller, Eric J. Bakker, Jeroen de Jong
Publikováno v:
Proceedings of the SPIE
Interferometry for Optical Astronomy II.
Interferometry for Optical Astronomy II., Aug 2002, Waikoloa, Hawaii, United States. pp.893-904
Interferometry for Optical Astronomy II.
Interferometry for Optical Astronomy II., Aug 2002, Waikoloa, Hawaii, United States. pp.893-904
The mid-infrared interferometric instrument MIDI is currently undergoing testing in preparation for commissioning on the Very Large Telescope Interferometer VLTI at the end of this year 2002. It will perform interferometric observations over the 8 μ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8610072a4d398ff422fb118e14ece638
https://hal.science/hal-03809314
https://hal.science/hal-03809314