High time resolution radio astronomy with low-frequency interferometric arrays
Access Status
Authors
Date
2014Collection
Type
Metadata
Show full item recordAbstract
High time resolution applications of radio astronomy including pulsars and fast radio bursts are proving to be incredibly scientifically rewarding in terms of the depth and breadth of new physics and astrophysics they unveil. While the use of large single-dish type instruments has been dominating the field over the past decades, with the emergence of several next-generation radio facilities including the Square Kilometre Array (SKA) pre-cursors and pathfinders, it becomes imperative to develop and master suitable high time resolution functionalities that are effective for interferometric instruments. The Murchison Widefield Array (MWA) - the low-frequency pre-cursor to the SKA - provides excellent opportunities to help realise the related goals. This paper will describe the high time resolution mode being developed for the MWA and highlight early science results, including the lowest-frequency scintillation observations of the millisecond pulsar PSR J0437-4715.
Citation
Source Title
Department
Related items
Showing items related by title, author, creator and subject.
-
Offringa, A.; Wayth, Randall; Hurley-Walker, N.; Kaplan, D.; Barry, N.; Beardsley, A.; Bell, M.; Bernardi, G.; Bowman, J.; Briggs, F.; Callingham, J.; Cappallo, R.; Carroll, P.; Deshpande, A.; Dillon, J.; Dwarakanath, K.; Ewall-Wice, A.; Feng, L.; For, B.; Gaensler, B.; Greenhill, L.; Hancock, P.; Hazelton, B.; Hewitt, J.; Hindson, L.; Jacobs, D.; Johnston-Hollitt, M.; Kapinska, A.; Kim, H.; Kittiwisit, P.; Lenc, E.; Line, J.; Loeb, A.; Lonsdale, C.; McKinley, B.; McWhirter, S.; Mitchell, D.; Morales, M.; Morgan, E.; Morgan, J.; Neben, A.; Oberoi, D.; Ord, Stephen; Paul, S.; Pindor, B.; Pober, J.; Prabu, T.; Procopio, P.; Riding, J.; Shankar, N.; Sethi, S.; Srivani, K.; Staveley-Smith, L.; Subrahmanyan, R.; Sullivan, I.; Tegmark, M.; Thyagarajan, N.; Tingay, Steven; Trott, C.; Webster, R.; Williams, A.; Williams, C.; Wu, C.; Wyithe, J.; Zheng, Q. (2015)The Murchison Widefield Array is a new low-frequency interferometric radio telescope built in Western Australia at one of the locations of the future Square Kilometre Array. We describe the automated radio-frequency ...
-
Kapinska, A.; Hardcastle, M.; Jackson, Carole; An, T.; Baan, W.; Jarvis, M. (2014)Radio-loud AGN (> 10 22 W Hz-1 at 1.4 GHz) will be the dominant bright source population detected with the SKA. The high resolution that the SKA will provide even in wide-area surveys will mean that, for the first time ...
-
Offringa, A.; De Bruyn, A.; Zaroubi, S.; Van Diepen, G.; Martinez-Ruby, O.; Labropoulos, P.; Brentjens, M.; Ciardi, B.; Daiboo, S.; Harker, G.; Jelic, V.; Kazemi, S.; Koopmans, L.; Mellema, G.; Pandey, V.; Pizzo, R.; Schaye, J.; Vedantham, H.; Veligatla, V.; Wijnholds, S.; Yatawatta, S.; Zarka, P.; Alexov, A.; Anderson, J.; Asgekar, A.; Avruch, M.; Beck, R.; Bell, M.; Bell, M.; Bentum, M.; Bernardi, G.; Best, P.; Birzan, L.; Bonafede, A.; Breitling, F.; Broderick, J.; Brüggen, M.; Butcher, H.; Conway, J.; De Vos, M.; Dettmar, R.; Eisloeffel, J.; Falcke, H.; Fender, R.; Frieswijk, W.; Gerbers, M.; Griessmeier, J.; Gunst, A.; Hassall, T.; Heald, G.; Hessels, J.; Hoeft, M.; Horneffer, A.; Karastergiou, A.; Kondratiev, V.; Koopman, Y.; Kuniyoshi, M.; Kuper, G.; Maat, P.; Mann, G.; McKean, J.; Meulman, H.; Mevius, M.; Mol, J.; Nijboer, R.; Noordam, J.; Norden, M.; Paas, H.; Pandey, M.; Pizzo, R.; Polatidis, A.; Rafferty, D.; Rawlings, S.; Reich, W.; Röttgering, H.; Schoenmakers, A.; Sluman, J.; Smirnov, O.; Sobey, Charlotte; Stappers, B.; Steinmetz, M.; Swinbank, J.; Tagger, M.; Tang, Y.; Tasse, C.; Van Ardenne, A.; Van Cappellen, W.; Van Duin, A. (2012)Aims. This paper discusses the spectral occupancy for performing radio astronomy with the Low-Frequency Array (LOFAR), with a focus on imaging observations. Methods. We have analysed the radio-frequency interference (RFI) ...