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We present low-frequency spectral energy distributions of 60 known radio pulsars observed with the Murchison Widefield Array (MWA) telescope. We searched the GaLactic and Extragalactic All-sky MWA (GLEAM) survey images for 200-MHz continuum…

We present the first systematic search for GHz frequency radio emission from directly imaged exoplanets using Very Large Array (VLA) observations of sufficient angular resolution to separate the planets from their host stars. We obtained…

Earth and Planetary Astrophysics · Physics 2021-12-22 Yvette Cendes , Peter K. G. Williams , Edo Berger

A spectral line image cube generated from 115 minutes of MWA data that covers a field of view of 400 sq. deg. around the Galactic Centre is used to perform the first Search for ExtraTerrestrial Intelligence (SETI) with the Murchison…

Earth and Planetary Astrophysics · Physics 2016-08-17 S. J. Tingay , C. Tremblay , A. Walsh , R. Urquhart

Recently, low frequency, broadband radio emission has been observed accompanying bright meteors by the Long Wavelength Array (LWA). The broadband spectra between 20 and 60 MHz were captured for several events, while the spectral index…

We report the results of a 154 MHz survey to search for emission from exoplanets located in the Upper Scorpius subgroup of the Sco Cen OB2 Association, the closest substantial region of recent star formation. This survey is different from…

Solar and Stellar Astrophysics · Physics 2017-03-09 C. R. Lynch , Tara Murphy , D. L. Kaplan , M. Ireland , M. E. Bell

We have studied radio haloes and relics in nine merging galaxy clusters using the Murchison Widefield Array (MWA). The images used for this study were obtained from the GaLactic and Extragalactic All-sky MWA (GLEAM) Survey which was carried…

Following from the results of the first systematic modern low frequency Search for Extraterrestrial Intelligence (SETI) using the Murchison Widefield Array (MWA), which was directed toward a Galactic Center field, we report a second survey…

Popular Physics · Physics 2018-04-04 S. J. Tingay , C. D. Tremblay , S. Croft

We present results from the first all-sky radio survey in circular polarisation. The survey uses the Murchison Widefield Array (MWA) to cover 30900 sq. deg., over declinations south of +30$^{\circ}$ and north of -86$^{\circ}$ centred at 200…

Astrophysics of Galaxies · Physics 2018-06-06 Emil Lenc , Tara Murphy , Christene R. Lynch , David L. Kaplan , Suinan Zhang

We present results from a search for radio emission in 77 stellar systems hosting 140 exoplanets, predominantly within 17.5 pc using the Very Large Array (VLA) at $4-8$ GHz. This is the largest and most sensitive search to date for radio…

Earth and Planetary Astrophysics · Physics 2024-04-29 Kevin N. Ortiz Ceballos , Yvette Cendes , Edo Berger , Peter K. G. Williams

We present techniques developed to calibrate and correct Murchison Widefield Array (MWA) low frequency (72-300 MHz) radio observations for polarimetry. The extremely wide field-of-view, excellent instantaneous (u, v)-coverage and…

We search data from the GLEAM-X survey, obtained with the Murchison Widefield Array (MWA) in 2020, for the presence of radio frequency interference from distant Earth-orbiting satellites, in the form of unintended emissions similar to those…

Instrumentation and Methods for Astrophysics · Physics 2025-12-09 S. J. Tingay , N. Hurley-Walker , K. Ross , T. J. Galvin , J. Morgan , B. Venville

The majority of searches for radio emission from exoplanets have to date focused on short period planets, i.e., the so-called hot Jupiter type planets. However, these planets are likely to be tidally locked to their host stars and may not…

Earth and Planetary Astrophysics · Physics 2018-05-02 Eamon O'Gorman , Colm P. Coughlan , Wouter Vlemmings , Eskil Varenius , Sandeep Sirothia , Tom P. Ray , Hans Olofsson

Like the magnetised planets in our Solar System, magnetised exoplanets should emit strongly at radio wavelengths. Radio emission directly traces the planetary magnetic fields and radio detections can place constraints on the physical…

Earth and Planetary Astrophysics · Physics 2018-05-03 C. R. Lynch , Tara Murphy , E. Lenc , D. L. Kaplan

We present results from new low frequency observations of two extrasolar planetary systems (Epsilon Eridani and HD128311) taken at 150 MHz with the Giant Metrewave Radio Telescope (GMRT). We do not detect either system, but are able to…

Astrophysics · Physics 2009-04-14 Samuel J. George , Ian R. Stevens

Extrasolar planets are expected to emit detectable low frequency radio emission. In this paper we present results from new low frequency observations of two extrasolar planetary systems (Epsilon Eridani and HD 128311) taken at 150 MHz with…

Astrophysics · Physics 2009-11-13 Samuel George , Ian Stevens

Following the results of our previous low frequency searches for extraterrestrial intelligence (SETI) using the Murchison Widefield Array (MWA), directed toward the Galactic Centre and the Orion Molecular Cloud (Galactic Anticentre), we…

Instrumentation and Methods for Astrophysics · Physics 2020-09-08 Chenoa D. Tremblay , Steven J. Tingay

We present a search, using the Murchison Widefield Array (MWA), for electromagnetic counterparts to two candidate high energy neutrino events detected by the ANTARES neutrino telescope in 2013 November and 2014 March. These events were…

High Energy Astrophysical Phenomena · Physics 2016-04-06 S. Croft , D. L. Kaplan , S. J. Tingay , T. Murphy , M. E. Bell , A. Rowlinson , S. Adrian-Martinez , M. Ageron , A. Albert , M. Andre , G. Anton , M. Ardid , J. -J. Aubert , T. Avgitas , B. Baret , J. Barrios-Marti , S. Basa , V. Bertin , S. Biagi , R. Bormuth , M. C. Bouwhuis , R. Bruijn , J. Brunner , J. Busto , A. Capone , L. Caramete , J. Carr , T. Chiarusi , M. Circella , A. Coleiro , R. Coniglione , H. Costantini , P. Coyle , A. Creusot , I. Dekeyser , A. Deschamps , G. De Bonis , C. Distefano , C. Donzaud , D. Dornic , D. Drouhin , T. Eberl , I. El Bojaddaini , D. Elsasser , A. Enzenhofer , K. Fehn , I. Felis , P. Fermani , L. A. Fusco , S. Galata , P. Gay , S. Geisselsoder , K. Geyer , V. Giordano , A. Gleixner , H. Glotin , R. Gracia-Ruiz , K. Graf , S. Hallmann , H. van Haren , A. J. Heijboer , Y. Hello , J. J. Hernandez-Rey , J. Hossl , J. Hofestadt , C. Hugon , C. W James , M. de Jong , M. Kadler , O. Kalekin , U. Katz , D. Kiessling , P. Kooijman , A. Kouchner , M. Kreter , I. Kreykenbohm , V. Kulikovskiy , C. Lachaud , R. Lahmann , D. Lefevre , E. Leonora , S. Loucatos , M. Marcelin , A. Margiotta , A. Marinelli , J. A. Martinez-Mora , A. Mathieu , T. Michael , P. Migliozzi , A. Moussa , C. Mueller , E. Nezri , G. E. Pavalas , C. Pellegrino , C. Perrina , P. Piattelli , V. Popa , T. Pradier , C. Racca , G. Riccobene , K. Roensch , M. Saldana , D. F. E. Samtleben , A. Sanchez-Losa , M. Sanguineti , P. Sapienza , J. Schmid , J. Schnabel , F. Schussler , T. Seitz , C. Sieger , M. Spurio , J. J. M. Steijger , T. Stolarczyk , M. Taiuti , C. Tamburini , A. Trovato , M. Tselengidou , D. Turpin , C. Tonnis , B. Vallage , C. Vallee , V. Van Elewyck , E. Visser , D. Vivolo , S. Wagner , J. Wilms , J. D. Zornoza , J. Zuniga , A. Klotz , M. Boer , A. Le Van Suu , C. Akerlof , W. Zheng

We present a search for prompt radio emission associated with the short-duration gamma-ray burst (GRB) 150424A using the Murchison Widefield Array (MWA) at frequencies from 80-133 MHz. Our observations span delays of 23 s-30 min after the…

High Energy Astrophysical Phenomena · Physics 2015-12-02 D. L. Kaplan , A. Rowlinson , K. W. Bannister , M. E. Bell , S. D. Croft , T. Murphy , S. J. Tingay , R. B. Wayth , A. Williams

We present a broadband map of polarized diffuse emission at 167-198 MHz developed from data from the Murchison Widefield Array (MWA). The map is designed to improve visibility simulation and precision calibration for 21 cm Epoch of…

Cosmology and Nongalactic Astrophysics · Physics 2021-11-17 Ruby Byrne , Miguel F. Morales , Bryna Hazelton , Ian Sullivan , Nichole Barry , Christene Lynch , Jack L. B. Line , Daniel C. Jacobs
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