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Measured Aperture-Array Noise Temperature of the Mark II Phased Array Feed for ASKAP

Autor: Chippendale, A. P., Brown, A. J., Beresford, R. J., Hampson, G. A., Shaw, R. D., Hayman, D. B., Macleod, A., Forsyth, A. R., Hay, S. G., Leach, M., Cantrall, C., Brothers, M. L., Hotan, A. W.

Publikováno v: 2015 International Symposium on Antennas and Propagation (ISAP), Hobart, TAS, 2015, pp. 1-4

We have measured the aperture-array noise temperature of the first Mk. II phased array feed that CSIRO has built for the Australian Square Kilometre Array Pathfinder telescope. As an aperture array, the Mk. II phased array feed achieves a beam equiva

Externí odkaz: http://arxiv.org/abs/1509.05489

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Measured Sensitivity of the First Mark II Phased Array Feed on an ASKAP Antenna

Autor: Chippendale, A. P., Brown, A. J., Beresford, R. J., Hampson, G. A., Macleod, A., Shaw, R. D., Brothers, M. L., Cantrall, C., Forsyth, A. R., Hay, S. G., Leach, M.

This paper presents the measured sensitivity of CSIRO's first Mk. II phased array feed (PAF) on an ASKAP antenna. The Mk. II achieves a minimum system-temperature-over-efficiency $T_\mathrm{sys}/\eta$ of 78 K at 1.23 GHz and is 95 K or better from 83

Externí odkaz: http://arxiv.org/abs/1509.00544

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Discovery of HI gas in a young radio galaxy at $z = 0.44$ using the Australian Square Kilometre Array Pathfinder

Autor: Allison, J. R., Sadler, E. M., Moss, V. A., Whiting, M. T., Hunstead, R. W., Pracy, M. B., Curran, S. J., Croom, S. M., Glowacki, M., Morganti, R., Shabala, S. S., Zwaan, M. A., Allen, G., Amy, S. W., Axtens, P., Ball, L., Bannister, K. W., Barker, S., Bell, M. E., Bock, D. C. -J., Bolton, R., Bowen, M., Boyle, B., Braun, R., Broadhurst, S., Brodrick, D., Brothers, M., Brown, A., Bunton, J. D., Cantrall, C., Chapman, J., Cheng, W., Chippendale, A. P., Chung, Y., Cooray, F., Cornwell, T., DeBoer, D., Diamond, P., Edwards, P. G., Ekers, R., Feain, I., Ferris, R. H., Forsyth, R., Gough, R., Grancea, A., Gupta, N., Guzman, J. C., Hampson, G., Harvey-Smith, L., Haskins, C., Hay, S., Hayman, D. B., Heywood, I., Hotan, A. W., Hoyle, S., Humphreys, B., Indermuehle, B. T., Jacka, C., Jackson, C., Jackson, S., Jeganathan, K., Johnston, S., Joseph, J., Kendall, R., Kesteven, M., Kiraly, D., Koribalski, B. S., Leach, M., Lenc, E., Lensson, E., Mackay, S., Macleod, A., Marquarding, M., Marvil, J., McClure-Griffiths, N., McConnell, D., Mirtschin, P., Norris, R. P., Neuhold, S., Ng, A., O'Sullivan, J., Pathikulangara, J., Pearce, S., Phillips, C., Popping, A., Qiao, R. Y., Reynolds, J. E., Roberts, P., Sault, R. J., Schinckel, A., Serra, P., Shaw, R., Shields, M., Shimwell, T., Storey, M., Sweetnam, T., Troup, E., Turner, B., Tuthill, J., Tzioumis, A., Voronkov, M. A., Westmeier, T., Wilson, C. D.

We report the discovery of a new 21-cm HI absorption system using commissioning data from the Boolardy Engineering Test Array of the Australian Square Kilometre Array Pathfinder (ASKAP). Using the 711.5 - 1015.5 MHz band of ASKAP we were able to cond

Externí odkaz: http://arxiv.org/abs/1503.01265

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The Australian Square Kilometre Array Pathfinder: System Architecture and Specifications of the Boolardy Engineering Test Array

Autor: Hotan, A. W., Bunton, J. D., Harvey-Smith, L., Humphreys, B., Jeffs, B. D., Shimwell, T., Tuthill, J., Voronkov, M., Allen, G., Amy, S., Ardern, K., Axtens, P., Ball, L., Bannister, K., Barker, S., Bateman, T., Beresford, R., Bock, D., Bolton, R., Bowen, M., Boyle, B., Braun, R., Broadhurst, S., Brodrick, D., Brooks, K., Brothers, M., Brown, A., Cantrall, C., Carrad, G., Chapman, J., Cheng, W., Chippendale, A., Chung, Y., Cooray, F., Cornwell, T., Davis, E., de Souza, L., DeBoer, D., Diamond, P., Edwards, P., Ekers, R., Feain, I., Ferris, D., Forsyth, R., Gough, R., Grancea, A., Gupta, N., Guzman, JC., Hampson, G., Haskins, C., Hay, S., Hayman, D., Hoyle, S., Jacka, C., Jackson, C., Jackson, S., Jeganathan, K., Johnston, S., Joseph, J., Kendall, R., Kesteven, M., Kiraly, D., Koribalski, B., Leach, M., Lenc, E., Lensson, E., Li, L., Mackay, S., Macleod, A., Maher, T., Marquarding, M., McClure-Griffiths, N., McConnell, D., Mickle, S., Mirtschin, P., Norris, R., Neuhold, S., Ng, A., O'Sullivan, J., Pathikulangara, J., Pearce, S., Phillips, C., Qiao, RY., Reynolds, J. E., Rispler, A., Roberts, P., Roxby, D., Schinckel, A., Shaw, R., Shields, M., Storey, M., Sweetnam, T., Troup, E., Turner, B., Tzioumis, A., Westmeier, T., Whiting, M., Wilson, C., Wilson, T., Wormnes, K., Wu, X.

This paper describes the system architecture of a newly constructed radio telescope - the Boolardy Engineering Test Array, which is a prototype of the Australian Square Kilometre Array Pathfinder telescope. Phased array feed technology is used to for

Externí odkaz: http://arxiv.org/abs/1409.1325

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Whole atmosphere-ionosphere data assimilation and ensemble forecasting system

Autor: Matsuo, T., Hsu, C., Cantrall, C., Fan, S., Ratheeshbabu, A., Kubaryk, A., Dilorenzo, B., Shao, H., Maruyama, N., Fuller-Rowell, T., Fang, T.

Publikováno v: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)

Accurate forecasting ofthe ionosphere-thermosphereconditions is critical to radio communication, navigation, positioning, and satellite tracking.Located at the intersection between geospace and the Earth’s atmosphere, the ionosphere-thermosphere is

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9f2c60c74ae3d48f1d419143fda714f

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