Search Results - "Callingham, Joseph R"

Exoplanet transits with next-generation radio telescopes by Pope, Benjamin J S, Withers, Paul, Callingham, Joseph R, Vogt, Marissa F

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Evidence for Cold Plasma in Planetary Nebulae From Radio Observations With the LOw Frequency ARray (LOFAR) by Hajduk, Marcin, Haverkorn, Marijke, Shimwell, Timothy, Olech, Mateusz, Callingham, Joseph R., Vedantham, Harish K., White, Glenn J., Iacobelli, Marco, Drabent, Alexander

“…Abstract We present observations of planetary nebulae with the LOw Frequency ARray (LOFAR) between 120 and 168 MHz. The images show thermal free–free emission…”
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Radio masers on WX UMa: hints of a Neptune-sized planet, or magnetospheric reconnection? by Kavanagh, Robert D, Vidotto, Aline A, Vedantham, Harish K, Jardine, Moira M, Callingham, Joe R, Morin, Julien

“…ABSTRACT The nearby M dwarf WX UMa has recently been detected at radio wavelengths with LOFAR. The combination of its observed brightness temperature and…”
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Radio emission as a stellar activity indicator by Yiu, Timothy W. H, Vedantham, Harish K, Callingham, Joseph R, Günther, Maximilian N

“…Radio observations of stars trace the plasma conditions and magnetic field properties of stellar magnetospheres and coronae. Depending on the plasma conditions…”
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Core prominence as a signature of restarted jet activity in the LOFAR radio-galaxy population by Nair, Dhanya G, Morganti, Raffaella, Brienza, Marisa, Mingo, Beatriz, Croston, Judith H, Jurlin, Nika, Shimwell, Timothy W, Callingham, Joseph R, Hardcastle, Martin J

“…(abridged) Characterizing duty cycles of recurrent phases of dormancy and activity in supermassive black holes in active galactic nuclei is crucial in…”
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Phenomenology and periodicity of radio emission from the stellar system AU Microscopii by Bloot, Sanne, Callingham, Joseph R, Vedantham, Harish K, Kavanagh, Robert D, Pope, Benjamin J. S, Climent, Juan B, Guirado, José Carlos, Peña-Moñino, Luis, Pérez-Torres, Miguel

“…Stellar radio emission can measure a star's magnetic field strength and structure, plasma density and dynamics, and the stellar wind pressure impinging on…”
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Radio masers on WX UMa: hints of a Neptune-sized planet, or magnetospheric reconnection? by Kavanagh, Robert D, Vidotto, Aline A, Vedantham, Harish K, Jardine, Moira M, Callingham, Joseph R, Morin, Julien

“…The nearby M dwarf WX UMa has recently been detected at radio wavelengths with LOFAR. The combination of its observed brightness temperature and circular…”
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The GLEAMing of the First Supermassive Black Holes by Drouart, Guillaume, Seymour, Nick, Galvin, Tim J, Afonso, Jose, Callingham, Joseph R, De Breuck, Carlos, Johnston-Hollitt, Melanie, Kapińska, Anna, Lehnert, Matthew D, Vernet, Joël

“…2020PASA...37...26D We present the results of a new selection technique to identify powerful ($L_{\rm 500\,MHz}>10^{27}\,$WHz$^{-1}$) radio galaxies towards…”
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The First Large Absorption Survey in HI (FLASH): II. Pilot Survey data release and first results by Yoon, Hyein, Sadler, Elaine M, Mahony, Elizabeth K, Aditya, J. N. H. S, Allison, James R, Glowacki, Marcin, Kerrison, Emily F, Moss, Vanessa A, Su, Renzhi, Weng, Simon, Whiting, Matthew, Wong, O. Ivy, Callingham, Joseph R, Curran, Stephen J, Darling, Jeremy, Edge, Alastair C, Ellison, Sara L, Emig, Kimberly L, Garratt-Smithson, Lilian, German, Gordon, Grasha, Kathryn, Koribalski, Baerbel S, Morganti, Raffaella, Oosterloo, Tom, Péroux, Céline, Pettini, Max, Pimbblet, Kevin A, Zheng, Zheng, Zwaan, Martin, Ball, Lewis, Bock, Douglas C. -J, Brodrick, David, Bunton, John D, Cooray, F. R, Edwards, Philip G, Hayman, Douglas B, Hotan, Aidan W, Lee-Waddell, K, McClure-Griffiths, N. M, Ng, A, Phillips, Chris J, Raja, Wasim, Voronkov, Maxim A, Westmeier, Tobias

“…The First Large Absorption Survey in HI (FLASH) is a large-area radio survey for neutral hydrogen in the redshift range 0.4<z<1.0, using the 21cm HI absorption…”
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The TESS View of LOFAR Radio-Emitting Stars by Pope, Benjamin J. S, Callingham, Joseph R, Feinstein, Adina D, Günther, Maximilian N, Vedantham, Harish K, Ansdell, Megan, Shimwell, Timothy W

“…The recent detection of the M dwarf GJ 1151 at 144 MHz low radio frequencies using LOFAR has been interpreted as evidence of an exoplanet magnetically…”
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High-resolution international LOFAR observations of 4C~43.15 -- Spectral ages and injection indices in a high-z radio galaxy by Sweijen, Frits, Morabito, Leah K, Harwood, Jeremy, van Weeren, Reinout J, Röttgering, Huub J. A, Callingham, Joseph R, Jackson, Neal, Miley, George, Moldon, Javier

“…Radio sources with steep spectra are preferentially associated with the most distant galaxies, the $\alpha-z$ relation, but the reason for this relation is an…”
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Evidence for cold plasma in planetary nebulae from radio observations with the LOw Frequency ARray (LOFAR) by Hajduk, Marcin, Haverkorn, Marijke, Shimwell, Timothy, Olech, Mateusz, Callingham, Joseph R, Vedantham, Harish K, White, Glenn J, Iacobelli, Marco, Drabent, Alexander

“…We present observations of planetary nebulae with the LOw Frequency ARray (LOFAR) between 120 and 168 MHz. The images show thermal free-free emission from the…”
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Exoplanet Transits with Next-Generation Radio Telescopes by Pope, Benjamin J. S, Withers, Paul, Callingham, Joseph R, Vogt, Marissa F

“…Nearly everything we know about extrasolar planets to date comes from optical astronomy. While exoplanetary aurorae are predicted to be bright at low radio…”
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No Massive Companion to the Coherent Radio-Emitting M Dwarf GJ 1151 by Pope, Benjamin J. S, Bedell, Megan, Callingham, Joseph R, Vedantham, Harish K, Snellen, Ignas A. G, Price-Whelan, Adrian M, Shimwell, Timothy W

“…Published in ApJL: https://iopscience.iop.org/article/10.3847/2041-8213/ab5b99 The recent detection of circularly polarized, long-duration (>8 hr)…”
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The GLEAM 4-Jy (G4Jy) Sample: I. Definition and the catalogue by White, Sarah V, Franzen, Thomas M. O, Riseley, Chris J, Wong, O. Ivy, Kapińska, Anna D, Hurley-Walker, Natasha, Callingham, Joseph R, Thorat, Kshitij, Wu, Chen, Hancock, Paul, Hunstead, Richard W, Seymour, Nick, Swan, Jesse, Wayth, Randall, Morgan, John, Chhetri, Rajan, Jackson, Carole, Weston, Stuart, Bell, Martin, For, Bi-Qing, Gaensler, B. M, Johnston-Hollitt, Melanie, Offringa, André, Staveley-Smith, Lister

“…Publ. Astron. Soc. Aust. 37 (2020) e018 The Murchison Widefield Array (MWA) has observed the entire southern sky (Declination, $\delta <$ 30 deg) at low…”
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The GLEAM 4-Jy (G4Jy) Sample: II. Host-galaxy identification for individual sources by White, Sarah V, Franzen, Thomas M. O, Riseley, Chris J, Wong, O. Ivy, Kapińska, Anna D, Hurley-Walker, Natasha, Callingham, Joseph R, Thorat, Kshitij, Wu, Chen, Hancock, Paul, Hunstead, Richard W, Seymour, Nick, Swan, Jesse, Wayth, Randall, Morgan, John, Chhetri, Rajan, Jackson, Carole, Weston, Stuart, Bell, Martin, Gaensler, B. M, Johnston-Hollitt, Melanie, Offringa, André, Staveley-Smith, Lister

“…The entire southern sky (Declination, $\delta <$ 30 deg) has been observed using the Murchison Widefield Array (MWA), which provides radio imaging of…”
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New candidate radio supernova remnants detected in the GLEAM survey over $345^\circ < l < 60^\circ$, $180^\circ < l < 240^\circ by Hurley-Walker, Natasha, Filipovic, Miroslav D, Gaensler, Bryan M, Leahy, Denis A, Hancock, Paul J, Franzen, Thomas M. O, Offringa, Andre R, Callingham, Joseph R, Hindson, Luke, Wu, Chen, Bell, Martin E, For, Bi-Qing, Johnston-Hollitt, Melanie, Kapinska, Anna D, Morgan, John, Murphy, Tara, McKinley, Benjamin, Procopio, Pietro, Staveley-Smith, Lister, Wayth, Randall B, Zheng, Cathie Q

“…We have detected 27 new supernova remnants (SNRs) using a new data release of the GLEAM survey from the Murchison Widefield Array (MWA) telescope, including…”
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Candidate radio supernova remnants observed by the GLEAM survey over $345^\circ < l < 60^\circ$ and $180^\circ < l < 240^\circ by Hurley-Walker, Natasha, Gaensler, Bryan M, Leahy, Denis A, Filipovic, Miroslav D, Hancock, Paul J, Franzen, Thomas M. O, Offringa, Andre R, Callingham, Joseph R, Hindson, Luke, Wu, Chen, Bell, Martin E, For, Bi-Qing, Johnston-Hollitt, Melanie, Kapinska, Anna D, Morgan, John, Murphy, Tara, McKinley, Benjamin, Procopio, Pietro, Staveley-Smith, Lister, Wayth, Randall B, Zheng, Cathie Q

“…We examined the latest data release from the GaLactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) survey covering $345^\circ < l < 60^\circ$,…”
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GaLactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) survey II: Galactic Plane $345^\circ < l < 67^\circ$, $180^\circ < l < 240^\circ by Hurley-Walker, Natasha, Hancock, Paul J, Franzen, Thomas M. O, Callingham, Joseph R, Offringa, Andre R, Hindson, Luke, Wu, Chen, Bell, Martin E, For, Bi-Qing, Gaensler, Bryan M, Johnston-Hollitt, Melanie, Kapinska, Anna D, Morgan, John, Murphy, Tara, McKinley, Benjamin, Procopio, Pietro, Staveley-Smith, Lister, Wayth, Randall B, Zheng, Cathie Q

“…This work makes available a further 2,860deg$^2$ of the GLEAM survey, covering half of the accessible Galactic Plane, across twenty frequency bands sampling…”
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Searching for Dark Matter Signals from Local Dwarf Spheroidal Galaxies at Low Radio Frequencies in the GLEAM Survey by Cook, Robin H. W, Seymour, Nick, Spekkens, Kristine, Hurley-Walker, Natasha, Hancock, Paul J, Bell, Martin E, Callingham, Joseph R, For, Bi-Qing, Franzen, Thomas M. O, Gaensler, Bryan M, Hindson, Luke, Jackson, Carole A, Johnston-Hollitt, Melanie, Kapińska, Anna D, Morgan, John, Offringa, André R, Procopio, Pietro, Staveley-Smith, Lister, Wayth, Randall B, Wu, Chen, Zheng, Qian

“…The search for emission from weakly interacting massive particle (WIMP) dark matter annihilation and decay has become a multi-pronged area of research not only…”
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