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The Potential for a Ka-band (32 GHz) Worldwide VLBI NetworkKa-band (32 GHz, 9mm) Very Long Baseline Interferometric (VLBI) networking has now begun and has tremendous potential for expansion over the next few years. Ka-band VLBI astrometry from NASA's Deep Space Network has already developed a catalog of 470 observable sources with highly accurate positions. Now, several antennas worldwide are planning or are considering adding Ka-band VLBI capability. Thus, there is now an opportunity to create a worldwide Ka-band network with potential for high resolution imaging and astrometry. With baselines approaching a Giga-lambda, a Ka-band network would be able to probe source structure at the nano-radian (200 as) level ( 100X better than Hubble) and thus gain insight into the astrophysics of the most compact regions of emission in active galactic nuclei. We discuss the advantages of Ka-band, show the known sources and candidates, simulate projected baseline (uv) coverage, and discuss potential radio frequency feeds. The combination of these elements demonstrates the feasibility of a worldwide Ka network within the next few years!
Document ID
20130001831
Document Type
Conference Paper
External Source(s)
Authors
Jacobs, C. S. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Bach, U. (Max-Planck-Inst. fuer Radioastronomie Bonn, Germany)
Colomer, F. (Instituto Geografico Nacional Madrid, Spain)
Garcia-Miro, C. (Madrid Deep Space Communications Complex Madrid, Spain)
Gomez-Gonzalez, J. (Instituto Geografico Nacional Madrid, Spain)
Gulyaev, S. (Auckland Univ. of Technology Auckland, New Zealand)
Horiuchi, S. (Canabera Deep Space Communications Complex Canberra, Australia)
Ichikawa, R. (National Inst. of Information and Communications Technology Kashima, Japan)
Kraus, A. (Max-Planck-Inst. fuer Radioastronomie Bonn, Germany)
Kronschnabl, G. (Bundesamt fuer Kartographie und Geodaesie Bad Koetzting, Germany)
Lopez-Fernandez, J. A. (Instituto Geografico Nacional Madrid, Spain)
Lovell, J. (Tasmania Univ. Hobart, Australia)
Majid, W. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Natusch, T. (Auckland Univ. of Technology Auckland, New Zealand)
Neidhardt, A. (Technische Univ. Munich, Germany)
Phillips, C. (Commonwealth Scientific and Industrial Research Organization Australia)
Porcas, R. (Max-Planck-Inst. fuer Radioastronomie Bonn, Germany)
Romero-Wolf, A. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Saldana, L. (ITT Exelis Monrovia, CA, United States)
Schreiber, U. (Bundesamt fuer Kartographie und Geodaesie Bad Koetzting, Germany)
Sotuela, I. (Madrid Deep Space Communications Complex Madrid, Spain)
Takeuchi, H. (Japan Aerospace Exploration Agency Sagamihara, Japan)
Trinh, J. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Tzioumis, A. (Commonwealth Scientific and Industrial Research Organization Australia)
deVincente, P. (Instituto Geografico Nacional Madrid, Spain)
Date Acquired
August 27, 2013
Publication Date
March 5, 2012
Subject Category
Astronomy
Meeting Information
IVS General Meeting Proceedings(Madrid)
Distribution Limits
Public
Copyright
Other
Keywords
quasar
synthesis imaging
Very Long Baseline Interferometric (VLBI)
S/X/Ka feeds
astrometry
X/Ka feed
phase arraying
32 GHz
Active Galactic Nuclei
Ka-band

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