Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Wark, R. M."'
Autor:
Moss, V. A., Allison, J. R., Sadler, E. M., Urquhart, R., Soria, R., Callingham, J. R., Curran, S. J., Musaeva, A., Mahony, E. K., Glowacki, M., Farrell, S. A., Bannister, K. W., Chippendale, A. P., Edwards, P. G., Harvey-Smith, L., Heywood, I., Hotan, A. W., Indermuehle, B. T., Lenc, E., Marvil, J., McConnell, D., Reynolds, J. E., Voronkov, M. A., Wark, R. M., Whiting, M. T.
Many radio galaxies show the presence of dense and dusty gas near the active nucleus. This can be traced by both 21cm HI absorption and soft X-ray absorption, offering new insight into the physical nature of the circumnuclear medium of these distant
Externí odkaz:
http://arxiv.org/abs/1707.01542
The Australian Square Kilometre Array Pathfinder: Performance of the Boolardy Engineering Test Array
Autor:
McConnell, D., Allison, J. R., Bannister, K., Bell, M. E., Bignall, H. E., Chippendale, A. P., Edwards, P. G., Harvey-Smith, L., Hegarty, S., Heywood, I., Hotan, A. W., Indermuehle, B. T., Lenc, E., Marvil, J., Popping, A., Raja, W., Reynolds, J. E., Sault, R. J., Serra, P., Voronkov, M. A., Whiting, M., Amy, S. W., Axtens, P., Ball, L., Bateman, T. J., Bock, D. C. -J., Bolton, R., Brodrick, D., Brothers, M., Brown, A. J., Bunton, J. D., Cheng, W., Cornwell, T., DeBoer, D., Feain, I., Gough, R., Gupta, N., Guzman, J. C., Hampson, G. A., Hay, S., Hayman, D. B., Hoyle, S., Humphreys, B., Jacka, C., Jackson, C. A., Jackson, S., Jeganathan, K., Joseph, J., Koribalski, B. S., Leach, M., Lensson, E. S., MacLeod, A., Mackay, S., Marquarding, M., McClure-Griffiths, N. M., Mirtschin, P., Mitchell, D., Neuhold, S., Ng, A., Norris, R., Pearce, S., Qiao, R. Y., Schinckel, A. E. T., Shields, M., Shimwell, T. W., Storey, M., Troup, E., Turner, B., Tuthill, J., Tzioumis, A., Wark, R. M., Westmeier, T., Wilson, C., Wilson, T.
We describe the performance of the Boolardy Engineering Test Array (BETA), the prototype for the Australian Square Kilometre Array Pathfinder telescope ASKAP. BETA is the first aperture synthesis radio telescope to use phased array feed technology, g
Externí odkaz:
http://arxiv.org/abs/1608.00750
Autor:
Wilson, Warwick E., Ferris, R. H., Axtens, P., Brown, A., Davis, E., Hampson, G., Leach, M., Roberts, P., Saunders, S., Koribalski, B. S., Caswell, J. L., Lenc, E., Stevens, J., Voronkov, M. A., Wieringa, M. H., Brooks, K., Edwards, P. G., Ekers, R. D., Emonts, B., Hindson, L., Johnston, S., Maddison, S. T., Mahony, E. K., Malu, S. S., Massardi, M., Mao, M. Y., McConnell, D., Norris, R. P., Schnitzeler, D., Subrahmanyan, R., Urquhart, J. S., Thompson, M. A., Wark, R. M.
Here we describe the Compact Array Broadband Backend (CABB) and present first results obtained with the upgraded Australia Telescope Compact Array (ATCA). The 16-fold increase in observing bandwidth, from 2 x 128 MHz to 2 x 2048 MHz, high bit samplin
Externí odkaz:
http://arxiv.org/abs/1105.3532
Autor:
Berger, E., Kulkarni, S. R., Pooley, G., Frail, D. A., McIntyre, V., Wark, R. M., Sari, R., Soderberg, A. M., Fox, D. W., Yost, S. A., Price, P. A.
Publikováno v:
Nature 426:154-157,2003
Past studies suggest that long-duration gamma-ray bursts (GRBs) have a standard energy of E_gamma ~ 10^51 erg in ultra-relativistic ejecta when corrected for asymmetry ("jets"). However, recently a group of sub-energetic bursts, including the peculia
Externí odkaz:
http://arxiv.org/abs/astro-ph/0308187
Autor:
Price, P. A., Berger, E., Reichart, D. E., Kulkarni, S. R., Subrahmanyan, R., Wark, R. M., Wieringa, M. H., Frail, D. A., Bailey, J., Boyle, B., Corbett, E., Gunn, K., Ryder, S. D., Seymour, N., Koviak, K., McCarthy, P., Phillips, M., Axelrod, T. S., Bloom, J. S., Djorgovski, S. G., Fox, D. W., Galama, T. J., Harrison, F. A., Hurley, K., Sari, R., Schmidt, B. P., Yost, S. A., Brown, M. J. I., Cline, T., Frontera, F., Guidorzi, C., Montanari, E.
Of the cosmological gamma-ray bursts, GRB 011121 has the lowest redshift, z=0.36. More importantly, the multi-color excess in the afterglow detected in the Hubble Space Telescope (HST) light curves is compelling observational evidence for an underlyi
Externí odkaz:
http://arxiv.org/abs/astro-ph/0203467
Autor:
Frail, D. A., Kulkarni, S. R., Wieringa, M. H., Taylor, G. B., Moriarty-Schieven, G. H., Shepherd, D. S., Wark, R. M., Subrahmanyan, R., McConnell, D., Cunningham, S. J.
We describe a ground-based effort to find and study afterglows at centimeter and millimeter wavelengths. We have observed all well-localized gamma-ray bursts in the Northern and Southern sky since BeppoSAX first started providing rapid positions in e
Externí odkaz:
http://arxiv.org/abs/astro-ph/9912171
Autor:
Harrison, F. A., Bloom, J. S., Frail, D. A., Sari, R., Kulkarni, S. R., Djorgovski, S. G., Axelrod, T., Mould, J., Schmidt, B. P., Wieringa, M. H., Wark, R. M., Subrahmanyan, R., McConnell, D., McCarthy, P. J., Schaefer, B. E., Markze, R. G. McMahon R. O., Firth, E., Soffitta, P., Amati, L.
Publikováno v:
Astrophys.J.523:L121-L124,1999
We present multi-color optical and two-frequency radio observations of the bright SAX event, GRB 990510. The well-sampled optical decay, together with the radio observations are inconsistent with simple spherical afterglow models. The achromatic opti
Externí odkaz:
http://arxiv.org/abs/astro-ph/9905306
Autor:
Kulkarni, S. R., Frail, D. A., Wieringa, M. H., Ekers, R. D., Sadler, E. M., Wark, R. M., Higdon, J. L., Phinney, E. S., Bloom, J. S.
Supernova SN 1998bw exploded in the same direction and at the same time as the gamma-ray burst GRB 980425. Here we report radio observations of this type Ic supernova, beginning 4 days after the gamma-ray burst. At its peak the radio source is the mo
Externí odkaz:
http://arxiv.org/abs/astro-ph/9807001
Autor:
Ellingsen, S. P., Norris, R. P., Diamond, P. J., McCulloch, P. M., Amy, S. W., Beasley, A. J., Ferris, R. H., Gough, R. G., King, E. A., Lovell, J. E. J., Reynolds, J. E., Tzioumis, A. K., Troup, E. R., Wark, R. M., Wieringa, M. H.
We present milliarcsecond resolution images of the 6.7 and 12.2 GHz methanol maser emission associated with the well-known star formation region NGC 6334F. The images agree well with previous lower resolution observations, but detect approximately do
Externí odkaz:
http://arxiv.org/abs/astro-ph/9604024
Autor:
Jauncey, D. L., Tingay, S. J., Preston, R. A., Reynolds, J. E., Lovell, J. E. J., McCulloch, P. M., Tzioumis, A. K., Costa, M. E., Murphy, D. W., Meier, D. L., Jones, D. L., Amy, S. W., Biggs, J. D., Blair, D. G., Clay, R. W., Edwards, P. G., Ellingsen, S. P., Ferris, R. H., Gough, R. G., Harbison, P., Jones, P. A., King, E. A., Kemball, A. J., Migenes, V., Nicolson, G. D., Sinclair, M. W., Ommen, T. V., Wark, R. M., White, G. L.
Publikováno v:
Proceedings of the National Academy of Sciences of the United States of America, 1995 Dec 01. 92(25), 11368-11370.
Externí odkaz:
https://www.jstor.org/stable/2368897