Hostname: page-component-8448b6f56d-tj2md Total loading time: 0 Render date: 2024-04-25T04:29:31.970Z Has data issue: false hasContentIssue false
  • English
  • Français

Science at Very High Angular Resolution with the Square Kilometre Array

Part of: Square Kilometre Array

Published online by Cambridge University Press:  02 January 2013

L. E. H. Godfrey ,
H. Bignall ,
S. Tingay ,
L. Harvey-Smith ,
M. Kramer ,
S. Burke-Spolaor ,
J. C. A. Miller-Jones ,
M. Johnston-Hollitt ,
R. Ekers  and
S. Gulyaev
L. E. H. Godfrey*
Affiliation:
International Centre for Radio Astronomy Research, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
H. Bignall
Affiliation:
International Centre for Radio Astronomy Research, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
S. Tingay
Affiliation:
International Centre for Radio Astronomy Research, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
L. Harvey-Smith
Affiliation:
CSIRO Astronomy and Space Science, Australia Telescope National Facility, PO Box 76, Epping, NSW 2121, Australia
M. Kramer
Affiliation:
Max-Planck-Institut fur Radioastronomie, Auf dem Hugel 69, D-53121 Bonn, Germany Jodrell Bank Centre for Astrophysics, University of Manchester, Manchester M13 9PL, UK
S. Burke-Spolaor
Affiliation:
CSIRO Astronomy and Space Science, Australia Telescope National Facility, PO Box 76, Epping, NSW 2121, Australia Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
J. C. A. Miller-Jones
Affiliation:
International Centre for Radio Astronomy Research, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
M. Johnston-Hollitt
Affiliation:
School of Chemical and Physical Sciences, Victoria University of Wellington, PO Box 600, Wellington, 6140, New Zealand
R. Ekers
Affiliation:
International Centre for Radio Astronomy Research, Curtin University, GPO Box U1987, Perth, WA 6845, Australia CSIRO Astronomy and Space Science, Australia Telescope National Facility, PO Box 76, Epping, NSW 2121, Australia
S. Gulyaev
Affiliation:
Institute for Radio Astronomy and Space Research, Auckland University of Technology, Auckland, New Zealand
*
HCorresponding author. Email: L.Godfrey@curtin.edu.au
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Preliminary specifications for the Square Kilometre Array (SKA) call for 25% of the total collecting area of the dish array to be located at distances greater than 180 km from the core, with a maximum baseline of at least 3000 km. The array will provide angular resolution θ ≲ 40–2 mas at 0.5–10 GHz with image sensitivity reaching ≲50 nJy beam−1 in an 8-hour integration with 500-MHz bandwidth. Given these specifications, the high-angular-resolution component of the SKA will be capable of detecting brightness temperatures ≲200K with milliarcsecond-scale angular resolution. The aim of this article is to bring together in one place a discussion of the broad range of new and important high-angular-resolution science that will be enabled by the SKA, and in doing so, address the merits of long baselines as part of the SKA. We highlight the fact that high angular resolution requiring baselines greater than 1000 km provides a rich science case with projects from many areas of astrophysics, including important contributions to key SKA science.

Keywords

telescopes
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 29 , Issue 1 , 2012 , pp. 42 - 53
Copyright
Copyright © Astronomical Society of Australia 2012

References

Bailes, M., 2005, ASPC, 328, 33Google Scholar
Beck, R. & Gaensler, B. M., 2004, NewAR, 48, 1289CrossRefGoogle Scholar
Bell, J. F. & Bailes, M., 1996, ApJL, 456, 33CrossRefGoogle Scholar
Bhat, N. D. R., Bailes, M. & Verbiest, J. P.W., 2008, PhRvD, 77, 124017Google Scholar
Bradshaw, C. F., Fomalont, E. B. & Geldzahler, B. J., 1999, ApJL, 512, 121CrossRefGoogle Scholar
Brisken, W. F., Benson, J. M., Beasley, A. J., Fomalont, E. B., Goss, W. M. & Thorsett, S. E., 2000, ApJ, 541, 959CrossRefGoogle Scholar
Burke-Spolaor, S., 2011a, MNRAS, 410, 2113CrossRefGoogle Scholar
Burke-Spolaor, S., 2011b, PhD Thesis, Supermassive Blackhole Binaries and Transient Radio Events: Studies in Pulsar Astronomy, http://hdl.handle.net/1959.3/196878Google Scholar
Cantrell, A. G. et al. , 2010, ApJ, 710, 1127CrossRefGoogle Scholar
Carilli, C. & Rawlings, S., 2004, NewAR, 48, 979CrossRefGoogle Scholar
Condon, J. J., 1992, ARA&A, 30, 575Google Scholar
Cordes, J. M., Kramer, M., Lazio, T. J. W., Stappers, B. W., Backer, D. C. & Johnston, S., 2004, NewAR, 48, 1413CrossRefGoogle Scholar
Croton, D. J. et al. , 2006, MNRAS, 365, 11CrossRefGoogle Scholar
Damour, T. & Taylor, J. H., 1991, ApJ, 366, 501Google Scholar
Damour, T. & Taylor, J. H., 1992, PhRvD, 45, 1840Google Scholar
Deller, A. T., Bailes, M. & Tingay, S. J., 2009a, Science, 323, 1327CrossRefGoogle Scholar
Deller, A. T., Tingay, S. J., Bailes, M. & Reynolds, J. E., 2009b, ApJ, 701, 1243CrossRefGoogle Scholar
Dhawan, V., Mirabel, I. F., Rib'o, M. & Rodrigues, I., 2007, ApJ, 668, 430CrossRefGoogle Scholar
Elbaz, D., 2010, IAUS, 267, 17Google Scholar
Elbaz, D., Jahnke, K., Pantin, E., Le Borgne, D. & Letawe, G., 2009, A&A, 507, 1359Google Scholar
Falcke, H, Kording, E. & Nagar, N. M., 2004, NewAR, 48, 1157CrossRefGoogle Scholar
Fender, R., 2004, NewAR, 48, 1399CrossRefGoogle Scholar
Fender, R., 2006, in Compact Stellar X-Ray Sources, ed. Lewin, W. & van der Klis, M., Cambridge Astrophysics Series (Cambridge, UK: Cambridge University Press), 39, 381Google Scholar
Fender, R., 2010, Lecture Notes in Physics, Vol. 794 (Berlin: Springer Verlag), 115Google Scholar
Fomalont, E & Reid, M., 2004, NewAR, 48, 1473CrossRefGoogle Scholar
Fryer, C. L., 1999, ApJ, 522, 413CrossRefGoogle Scholar
Fryer, C. L. & Kalogera, V., 2001, ApJ, 554, 548Google Scholar
Gaensler, B. M., 2006, AN, 327, 387Google Scholar
Gaensler, B. M., Beck, R. & Feretti, L., 2004, NewAR, 48, 1003CrossRefGoogle Scholar
Gallo, E. et al. , 2006, MNRAS, 370, 1351CrossRefGoogle Scholar
Garcia, M. R., McClintock, J. E., Narayan, R., Callanan, P., Barret, D. & Murray, S. S., 2001, ApJL, 553, 47CrossRefGoogle Scholar
Garrett, M. A., 2000, in Perspectives on Radio Astronomy: Science with Large Arrays, ed. Haarlem, M. P. van (Dwingeloo: ASTRON), 139Google Scholar
Godfrey, L., Bignall, H., Tingay, S., 2011, SKA Memo 135, http://www.skatelescope.org/uploaded/16339_135_Memo_Godfrey.pdfGoogle Scholar
Gou, L. et al. , 2011, BAAS, 410 17Google Scholar
Greaves, J., 2010, ‘PEBBLES: Protoplanetary Disks with eMERLIN and SKA’, presented at the SKA 2010 Science and Engineering Meeting, ManchesterGoogle Scholar
Greaves, J. S., Richards, A. M. S., Rice, W. K. M. & Muxlow, T. W. B., 2008, MNRAS, 391, L74CrossRefGoogle Scholar
Greaves, J. et al. , 2009, ‘PEBBLES’ e-MERLIN Legacy Project Proposal, http://www.e-merlin.ac.uk/legacy/proposals/e-MERLIN_Legacy_PEBBLES.pdfGoogle Scholar
Hoare, M. G., 2004, NewAR, 48, 1327CrossRefGoogle Scholar
Hoare, M. G., 2009, ‘Protoplanetary Disks with SKA-mid’, presented at the prepSKA work package 2 Annual Meeting, ManchesterGoogle Scholar
Jaffe, A. H. & Backer, D. C., 2003, ApJ, 583, 616CrossRefGoogle Scholar
Jenet, F. A., Lommen, A., Larson, S. L. & Wen, L., 2004, ApJ, 606, 799CrossRefGoogle Scholar
Johnson, K. E., 2004, NewAR, 48, 1337CrossRefGoogle Scholar
Jonker, P. G. & Nelemans, G., 2004, MNRAS, 354, 355CrossRefGoogle Scholar
Kamp, I., Freudling, W. & Chengalur, J. N., 2007, ApJ, 660, 469CrossRefGoogle Scholar
Klamer, I. J., Ekers, R. D., Sadler, E. M. & Hunstead, R. W., 2004, ApJL, 612, 97CrossRefGoogle Scholar
Kramer, M., 2010, IAUS, 261, 366Google Scholar
Kramer, M., Backer, D. C., Cordes, J. M., Lazio, T. J. W., Stappers, B. W. & Johnston, S., 2004, NewAR, 48, 993CrossRefGoogle Scholar
Lee, K. J., Wex, N., Kramer, M., Stappers, B. W., Bassa, C. G., Janssen, G. H., Karuppusamy, R. & Smits, R., 2011, MNRAS, 414, 3251CrossRefGoogle Scholar
Lipunov, V. M., Bogomazov, A. I. & Abubekerov, M. K., 2005, MNRAS, 359, 1517CrossRefGoogle Scholar
Liu, K., Wex, N., Kramer, M., Cordes, J. M. & Lazio, T. J. W., 2011, ApJ, in pressGoogle Scholar
Macquart, J.-P. et al. , 2010, PASA, 27, 272CrossRefGoogle Scholar
Merloni, A., Heinz, S. & di Matteo, T., 2003, MNRAS, 345, 1057CrossRefGoogle Scholar
Merritt, D., 2006, ApJ, 648, 976CrossRefGoogle Scholar
Migliari, S. & Fender, R. P., 2006, MNRAS, 366, 79CrossRefGoogle Scholar
Miller-Jones, J. C. A., Jonker, P. G., Nelemans, G., Portegies Zwart, S., Dhawan, V., Brisken, W., Gallo, E. & Rupen, M. P., 2009a, MNRAS, 394, 1440CrossRefGoogle Scholar
Miller-Jones, J. C. A., Jonker, P. G., Dhawan, V., Brisken, W., Rupen, M. P., Nelemans, G. & Gallo, E., 2009b, ApJL, 706, 230CrossRefGoogle Scholar
Mioduszewski, A. J., Rupen, M. P., Hjellming, R. M., Pooley, G. G. & Waltman, E. B., 2001, ApJ, 553, 766CrossRefGoogle Scholar
Mirabel, I. F., Dhawan, V., Mignani, R. P., Rodrigues, I. & Guglielmetti, F., 2001, Nature, 413, 139CrossRefGoogle Scholar
Morganti, R., Hoare, M., Garrett, M., 2006, ‘The Magnificent Memo Series: Trade-Offs between Science and Engineering for the Square Kilometre Array’, SKA Memo No. 82, AugustGoogle Scholar
Natta, A., Testi, L., Calvet, N., Henning, T., Waters, R. & Wilner, D., 2007, Protostars and Planets V, 767Google Scholar
Nordhaus, J., Brandt, T. D., Burrows, A., Livne, E. & Ott, C. D., 2010, PhRvD, 82, 103016Google Scholar
Norris, R. P., Kesteven, M. J., Troup, E. R., Allen, D. A. & Sramek, R. A., 1990, ApJ, 359, 291CrossRefGoogle Scholar
Noutsos, A., 2009, IAU Symposium, 259, 15Google Scholar
Pfahl, E., Podsiadlowski, P. & Rappaport, S., 2005, ApJ, 628, 343CrossRefGoogle Scholar
Reid, M. J., McClintock, J. E., Narayan, R., Gou, L., Remillard, R. A. & Orosz, J. A., 2011, Bulletin of the American Astronomical Society, 43, #223.01Google Scholar
Remillard, R. A. & McClintock, J. E., 2006, ARA&A, 44, 49Google Scholar
Rioja, M., Dodson, R., Porcas, R.W., Ferris, D., Reynolds, J., Sasao, T., Schilizzi, R., 2009, in Proceedings of the 8th International e-VLBI Workshop, 14, http://pos.sissa.it/archive/conferences/082/014/EXPReS09_014.pdfGoogle Scholar
Rodriguez, C., Taylor, G. B., Zavala, R. T., Peck, A. B., Pollack, L. K. & Romani, R. W., 2006, ApJ, 646, 49CrossRefGoogle Scholar
Ryba, M. F. & Taylor, J. H., 1991, ApJ, 371, 739CrossRefGoogle Scholar
Schilizzi, R. T., et al. , 2007, ‘Preliminary Specifications for the SKA’, SKA Memo, 100Google Scholar
Schilizzi, R. T., et al. , 2011, ‘Project Execution Plan Pre-Construction Phase for the Square Kilometre Array’, SKA Memo, 130CrossRefGoogle Scholar
Sesana, A., Vecchio, A. & Volonteri, M., 2009, MNRAS, 394, 2255CrossRefGoogle Scholar
Seymour, N. et al. , 2008, MNRAS, 386, 1695CrossRefGoogle Scholar
Shklovskii, I. S., 1970, Soviet Astron., 13, 562Google Scholar
Sigurdsson, S., 2003, Radio Pulsars, 302, 391Google Scholar
Silk, J., 2005, MNRAS, 364, 1337CrossRefGoogle Scholar
Simonetti, J. H., Kavic, M., Minic, D., Surani, U. & Vejayan, V., ApJL, 737, 28CrossRefGoogle Scholar
SKA Science Working Group, 2010, ‘The Square Kilometre Array Design Reference Mission: SKA-mid and SKA-lo v. 1.0’Google Scholar
Smits, R., Tingay, S. J., Wex, N, Kramer, M & Stappers, B, 2011, A&A, 528, A108Google Scholar
Smits, R., Kramer, M., Stappers, B., Lorimer, D. R., Cordes, J. & Faulkner, A., 2009, AAP, 493, 1161CrossRefGoogle Scholar
Stairs, I. H., 2010, IAUS, 261, 218Google Scholar
Stepanov, R., Frick, P., Shukurov, A. & Sokoloff, D., 2002, A&A, 391, 361Google Scholar
Thompson, D. R., Wagstaff, K. L., Brisken, W. F., Deller, A. T., Majid, W. A., Tingay, S. J. & Wayth, R. B., 2011, ApJ, 735, 98CrossRefGoogle Scholar
Tingay, S. J. & Wayth, R. B., 2011, AJ, 141, 174CrossRefGoogle Scholar
Tingay, S. J. et al. , 1995, Nature, 374, 141CrossRefGoogle Scholar
Volonteri, M., Haardt, F. & Madau, P., 2003, ApJ, 582, 559CrossRefGoogle Scholar
Wayth, R. B., Brisken, W. F., Deller, A. T., Majid, W. A., Thompson, D. R., Tingay, S. J. & Wagstaff, K. L., 2011, ApJ, 735, 97CrossRefGoogle Scholar
Weisberg, J. M., Stanimirović, S., Xilouris, K., Hedden, A., de la Fuente, A., Anderson, S. B. & Jenet, F. A., 2008, ApJ, 674, 286CrossRefGoogle Scholar
Wilkinson, P. N., Kellermann, K. I., Ekers, R. D., Cordes, J. M. & Lazio, T. J. W., 2004, NewAR, 48, 1551CrossRefGoogle Scholar
Wilner, D. J., 2004, NewAR, 48, 1363CrossRefGoogle Scholar
Wilner, D.J., D'Alessio, P., Calvet, N., Claussen, M. J. & Hartmann, L., 2005, ApJL, 626, 109CrossRefGoogle Scholar
Yu, Q., 2002, MNRAS, 331, 935CrossRefGoogle Scholar