Zobrazeno 1 - 10
of 126
pro vyhledávání: '"Gourdji K"'
Autor:
Rhodes, L., van der Horst, A. J., Bright, J. S., Leung, J. K., Anderson, G. E., Fender, R., Fernandez, J. F. Agüí, Bremer, M., Chandra, P., Dobie, D., Farah, W., Giarratana, S., Gourdji, K., Green, D. A., Lenc, E., Michałowski, M. J., Murphy, T., Nayana, A. J., Pollak, A. W., Rowlinson, A., Schussler, F., Siemion, A., Starling, R. L. C., Scott, P., Thöne, C. C., Titterington, D., Postigo, A. de Ugarte
We present radio observations of the long-duration gamma-ray burst (GRB) 221009A which has become known to the community as the Brightest Of All Time or the BOAT. Our observations span the first 475 days post-burst and three orders of magnitude in ob
Externí odkaz:
http://arxiv.org/abs/2408.16637
Autor:
Shannon, R. M., Bannister, K. W., Bera, A., Bhandari, S., Day, C. K., Deller, A. T., Dial, T., Dobie, D., Ekers, R. D., Fong, W. -f., Glowacki, M., Gordon, A. C., Gourdji, K., Jaini, A., James, C. W., Kumar, P., Mahony, E. K., Marnoch, L., Muller, A. R., Prochaska, J. X., Qiu, H., Ryder, S. D., Sadler, E. M., Scott, D. R., Tejos, N., Uttarkar, P. A., Wang, Y.
With wide-field phased array feed technology, the Australian Square Kilometre Array Pathfinder (ASKAP) is ideally suited to search for seemingly rare radio transient sources. The Commensal Real-time ASKAP Fast Transient (CRAFT) Survey Science Project
Externí odkaz:
http://arxiv.org/abs/2408.02083
Autor:
Uttarkar, Pavan, Shannon, Ryan M., Lower, Marcus E., Kumar, Pravir, Price, Danny C., Deller, A. T., Gourdji, K.
Fast Radio Bursts (FRBs) are short-timescale transients of extragalactic origin. The number of detected FRBs has grown dramatically since their serendipitous discovery from archival data. Some FRBs have also been seen to repeat. The polarimetric prop
Externí odkaz:
http://arxiv.org/abs/2405.11515
Autor:
Rowlinson, A., de Ruiter, I., Starling, R. L. C., Rajwade, K. M., Hennessy, A., Wijers, R. A. M. J., Anderson, G. E., Mevius, M., Ruhe, D., Gourdji, K., van der Horst, A. J., ter Veen, S., Wiersema, K.
In this paper, we present rapid follow-up observations of the short GRB 201006A, consistent with being a compact binary merger, using the LOw Frequency ARray (LOFAR). We have detected a candidate 5.6$\sigma$, short, coherent radio flash at 144 MHz at
Externí odkaz:
http://arxiv.org/abs/2312.04237
Autor:
Tian, J., Anderson, G. E., Cooper, A. J., Gourdji, K., Sokolowski, M., Rowlinson, A., Williams, A., Sleap, G., Dobie, D., Kaplan, D. L., Murphy, Tara, Tingay, S. J., Panther, F. H., Lasky, P. D., Bahramian, A., Miller-Jones, J. C. A., James, C. W., Meyers, B. W., McSweeney, S. J., Hancock, P. J.
We present and evaluate the prospects for detecting coherent radio counterparts to gravitational wave (GW) events using Murchison Widefield Array (MWA) triggered observations. The MWA rapid-response system, combined with its buffering mode ($\sim4$ m
Externí odkaz:
http://arxiv.org/abs/2309.16383
Autor:
Hennessy, A., Starling, R. L. C., Rowlinson, A., de Ruiter, I., Kumar, A., Eyles-Ferris, R. A. J., Ror, A. K., Anderson, G. E., Gourdji, K., van der Horst, A. J., Pandey, S. B., Shimwell, T. W., Steeghs, D., Stylianou, N., ter Veen, S., Wiersema, K., Wijers, R. A. M. J.
Publikováno v:
MNRAS, 526, 106-117 (2023)
The composition of relativistic gamma-ray burst (GRB) jets and their emission mechanisms are still debated, and they could be matter or magnetically dominated. One way to distinguish these mechanisms arises because a Poynting flux dominated jet may p
Externí odkaz:
http://arxiv.org/abs/2308.16121
Fast Radio Bursts (FRBs) are extragalactic transients of (sub-)millisecond duration that show wide-ranging spectral, temporal, and polarimetric properties. The polarimetric analysis of FRBs can be used to probe intervening media, study the emission m
Externí odkaz:
http://arxiv.org/abs/2308.14387
Autor:
Scott, D. R., Cho, H., Day, C. K., Deller, A. T., Glowacki, M., Gourdji, K., Bannister, K. W., Bera, A., Bhandari, S., James, C. W., Shannon, R. M.
Fast radio bursts (FRBs) are being detected with increasing regularity. However, their spontaneous and often once-off nature makes high-precision burst position and frequency-time structure measurements difficult without specialised real-time detecti
Externí odkaz:
http://arxiv.org/abs/2301.13484
Autor:
Cooper, A. J., Gupta, O., Wadiasingh, Z., Wijers, R. A. M. J., Boersma, O. M., Andreoni, I., Rowlinson, A., Gourdji, K.
We investigate pre-merger coherent radio emission from neutron star mergers arising due to the magnetospheric interaction between compact objects. We consider two plausible radiation mechanisms, and show that if one neutron star has a surface magneti
Externí odkaz:
http://arxiv.org/abs/2210.17205
Autor:
Cooper, A. J., Rowlinson, A., Wijers, R. A. M. J., Bassa, C., Gourdji, K., Hessels, J., van der Horst, A. J., Kondratiev, V., Pleunis, Z., Shimwell, T., ter Veen, S.
Publikováno v:
Volume 517, Issue 4, pp.5483-5495, 2022
We present LOFAR imaging observations from the April/May 2020 active episode of magnetar SGR 1935+2154. We place the earliest radio limits on persistent emission following the low-luminosity fast radio burst FRB 200428 from the magnetar. We also perf
Externí odkaz:
http://arxiv.org/abs/2210.06547