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$\textit{Context.}$ The magnetized Solar System planets are strong radio emitters and theoretical studies suggest that the radio emission from nearby exoplanets in close-in orbits could reach intensity levels $10^{3}-10^{7}$ times higher…

地球与行星天体物理 · 物理学 2019-04-10 Jake D. Turner , Jean-Mathias Grießmeier , Philippe Zarka , Iaroslavna Vasylieva

AIMS: To demonstrate and test the capability of the next generation of low-frequency radio telescopes to perform high resolution observations across intra-continental baselines. Jupiter's strong burst emission is used to perform broadband…

天体物理学 · 物理学 2008-09-17 A. Nigl , P. Zarka , J. Kuijpers , H. Falcke , L. Baehren , L. Denis

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…

地球与行星天体物理 · 物理学 2018-05-02 Eamon O'Gorman , Colm P. Coughlan , Wouter Vlemmings , Eskil Varenius , Sandeep Sirothia , Tom P. Ray , Hans Olofsson

We report on results of imaging and spectral studies of X-ray emission from Jupiter observed by Suzaku. In 2006 Suzaku had found diffuse X-ray emission in $1\unicode{x2013}5$ keV associated with Jovian inner radiation belts. It has been…

We present a technique for creating a longitude-resolved image of Jupiter's thermal radio emission. The technique has been applied to VLA data taken on 25 January 1996 at a wavelength of 2 cm. A comparison with infrared data shows a good…

天体物理学 · 物理学 2009-11-11 R. J. Sault , C. Engel , Imke de Pater

We observed Jupiter four times over a full rotation (10 hrs) with the upgraded Karl G. Jansky Very Large Array (VLA) between December 2013 and December 2014. Preliminary results at 4-17 GHz were presented in de Pater et al. (2016); in the…

地球与行星天体物理 · 物理学 2019-02-21 I. de Pater , R. J. Sault , M. H. Wong , L. N. Fletcher , D. DeBoer , B. Butler

We present the first X-ray observation of Jupiter by XMM-Newton. Images taken with the EPIC cameras show prominent emission, essentially all confined to the 0.2-2.0 keV band, from the planet's auroral spots; their spectra can be modelled…

天体物理学 · 物理学 2009-11-10 G. Branduardi-Raymont , R. F. Elsner , G. R. Gladstone , G. Ramsay , P. Rodriguez , R. Soria , J. H. Waite

All the giant planets in the solar system generate radio emission via the electron cyclotron maser instability, most notably giving rise to Jupiter's decametric emissions. An interaction with the solar wind is at least partially responsible…

地球与行星天体物理 · 物理学 2021-01-04 F. de Gasperin , T. J. W. Lazio , M. Knapp

Radiation belts are present in all large-scale Solar System planetary magnetospheres: Earth, Jupiter, Saturn, Uranus, and Neptune. These persistent equatorial zones of trapped high energy particles up to tens of MeV can produce bright radio…

地球与行星天体物理 · 物理学 2024-03-15 Melodie M. Kao , Amy J. Mioduszewski , Jackie Villadsen , Evgenya L. Shkolnik

We report the discovery of diffuse hard (1-5 keV) X-ray emission around Jupiter in a deep 160 ks Suzaku XIS data. The emission is distributed over ~16x8 Jovian radius and spatially associated with the radiation belts and the Io Plasma…

地球与行星天体物理 · 物理学 2015-05-14 Yuichiro Ezoe , Kumi Ishikawa , Takaya Ohashi , Yoshizumi Miyoshi , Naoki Terada , Yasunobu Uchiyama , Hitoshi Negoro

Hot Jupiters have been proposed as a likely population of low frequency radio sources due to electron cyclotron maser emission of similar nature to that detected from the auroral regions of magnetized solar system planets. Such emission…

地球与行星天体物理 · 物理学 2015-06-11 G. Hallinan , S. K. Sirothia , A. Antonova , C. H. Ishwara-Chandra , S. Bourke , J. G. Doyle , J. Hartman , A. Golden

Radio observations of ultracool dwarfs, objects comprising brown dwarfs and the very lowest mass stars, have mainly focused on analyzing their light-curve and spectral energy distributions providing valuable insights into their magnetic…

太阳与恒星天体物理 · 物理学 2023-09-29 J. B. Climent , J. C. Guirado , M. Pérez-Torres , J. M. Marcaide , L. Peña-Moñino

Radio U-bursts and J-bursts are signatures of electron beams propagating along magnetic loops confined to the corona. The more commonly observed type III radio bursts are signatures of electron beams propagating along magnetic loops that…

太阳与恒星天体物理 · 物理学 2017-11-01 Hamish A. S. Reid , Eduard P. Kontar

We have conducted a mini-survey for low-frequency radio emission from some of the closest brown dwarfs to the Sun with rapid rotation rates: SIMP J013656.5+093347, WISEPC J150649.97+702736.0, and WISEPA J174124.26+255319.5. We have placed…

We have obtained long-slit, infrared spectra of Jupiter with the Anglo Australian Telescope in the K and H bands at a resolving power of 2260. Using a line-by-line, radiative transfer model with the latest, improved spectral line data for…

太阳与恒星天体物理 · 物理学 2015-05-27 Lucyna Kedziora-Chudczer , Jeremy Bailey

Low-frequency radio observations are revealing an increasing number of diffuse synchrotron sources from galaxy clusters, dominantly in the form of radio halos or radio relics. The existence of this diffuse synchrotron emission indicates the…

We have conducted a deep survey (with a central rms of $55\mu\textrm{Jy}$) with the LOw Frequency ARray (LOFAR) at 120-168 MHz of the Bo\"otes field, with an angular resolution of $3.98^{''}\times6.45^{''}$, and obtained a sample of 10091…

We study the spatial and temporal variability in Jupiter's atmosphere by comparing longitude-resolved brightness temperature maps from the Very Large Array (VLA) radio observatory and NASA's Juno spacecraft Microwave Radiometer (MWR) taken…

地球与行星天体物理 · 物理学 2024-12-31 Joanna Hardesty , Chris Moeckel , Imke de Pater

We present the first sub-mJy ($\approx0.7$ mJy beam$^{-1}$) survey to be completed below 100 MHz, which is over an order of magnitude deeper than previously achieved for widefield imaging of any field at these low frequencies. The high…

We observed Jupiter at wavelengths near 2 cm with the Karl G. Jansky Very Large Array in February 2015. These frequencies are mostly sensitive to variations in ammonia abundance and probe between ~0.5-2.0 bars of pressure in Jupiter's…

地球与行星天体物理 · 物理学 2017-01-23 Richard Cosentino , Bryan Butler , Bob Sault , Raul Morales-Juberias , Amy Simon , Imke de Pater
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