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200 papers

Type II radio bursts are the indicator of adverse space weather in a stellar system. These radio bursts are the consequence of shock wave acceleration due to the coronal mass ejection (CME). In this study, we conduct a series of…

Earth and Planetary Astrophysics · Physics 2025-05-02 Soumitra Hazra , Ofer Cohen , Igor V. Sokolov

I present a review of astrometric techniques and instrumentation utilized to search for, detect, and characterize extra-solar planets. First, I briefly summarize the properties of the present-day sample of extrasolar planets, in connection…

Astrophysics · Physics 2009-11-11 A. Sozzetti

We study the challenges to detect the cosmic web at radio wavelengths with state-of-the-art cosmological simulations of extragalactic magnetic fields. The incoming generation of radio surveys operating at low frequency, like LOFAR, SKA-LOW…

Cosmology and Nongalactic Astrophysics · Physics 2016-02-25 F. Vazza , M. Brueggen , C. Gheller , C. Ferrari , A. Bonafede

Astronomical surveys have identified numerous exoplanets with bulk compositions that are unlike the planets of the Solar System, including rocky super-Earths and gas-enveloped sub-Neptunes. Observing the atmospheres of these objects…

Earth and Planetary Astrophysics · Physics 2025-10-13 Tim Lichtenberg , Oliver Shorttle , Johanna Teske , Eliza M. -R. Kempton

The nearby M dwarf WX UMa has recently been detected at radio wavelengths with LOFAR. The combination of its observed brightness temperature and circular polarisation fraction suggests that the emission is generated via the…

Solar and Stellar Astrophysics · Physics 2022-06-15 Robert D. Kavanagh , Aline A. Vidotto , Harish K. Vedantham , Moira M. Jardine , Joseph R. Callingham , Julien Morin

Radio observations provide a window into a planet's interior and play a crucial role in studying its atmosphere and surface, key factors to find potential habitability. The discovery of thousands of exoplanets, together with advances in…

Earth and Planetary Astrophysics · Physics 2025-10-23 Mahdiyar Mousavi-Sadr , Fatemeh S. Tabatabaei , Alexander Wolszczan , Ghassem Gozaliasl

The requirements on space missions designed to study Terrestrial exoplanets are discussed. We then investigate whether the design of such a mission, specifically the Darwin nulling interferometer, can be carried out in a simplified…

Astrophysics · Physics 2011-03-17 L Kaltenegger , M. Fridlund , A. Karlsson

X-ray emission traces the gaseous environments of radio sources. The medium must be present for jet confinement, but what are its influence on jet fuelling, dynamics, propagation, and disruption? The observational situation is both…

Astrophysics · Physics 2009-10-31 D. M. Worrall

The magnetosphere of an exoplanet has yet to be unambiguously detected. Investigations of star-planet interaction and neutral atomic hydrogen absorption during transit to detect magnetic fields in hot Jupiters have been inconclusive, and…

The astrometric and radial velocity techniques of extra-solar planet detection attempt to detect the periodic reflex motion of the parent star by extracting this periodic signal from a time-sampled set of observations. The extraction is…

Astrophysics · Physics 2009-11-07 J. A. Eisner , S. R. Kulkarni

The number of exoplanets detected using gravitational microlensing technique is currently larger than 200, which enables population studies. Microlensing is uniquely sensitive to low-mass planets orbiting at separations of several…

Earth and Planetary Astrophysics · Physics 2024-06-05 P. Mroz , R. Poleski

Eclipse exoplanet spectroscopy has yielded detection of H_2O, CH_4, CO_2 and CO in the atmosphere of hot jupiters and neptunes. About 40 large terrestrial planets are announced or confirmed, two of which are transiting, and another deemed…

Earth and Planetary Astrophysics · Physics 2015-05-19 A. R. Belu , F. Selsis , J-C. Morales , I. Ribas , C. Cossou , H. Rauer

The intense star formation in starburst galaxies results in the formation of intense winds that sweep matter up to several kpc out of the galactic plane. These winds can be detected in many bands of the electromagnetic spectrum. In this…

Astrophysics of Galaxies · Physics 2024-08-01 C. A. Galante , J. Saponara , G. E. Romero , P. Benaglia

Direct detection and detailed characterization of exoplanets using extreme adaptive optics (ExAO) is a key science goal of future extremely large telescopes (ELTs). However, wavefront errors will limit the sensitivity of this endeavor.…

Instrumentation and Methods for Astrophysics · Physics 2019-10-11 Benjamin L. Gerard , Christian Marois , Raphaël Galicher , Pierre Baudoz , Polychronis Patapis , Jonas Kühn

Much of the focus of exoplanet atmosphere analysis in the coming decade will be at infrared wavelengths, with the planned launches of the James Webb Space Telescope (JWST) and the Wide-Field Infrared Survey Telescope (WFIRST). However,…

Earth and Planetary Astrophysics · Physics 2019-03-27 Eric D. Lopez , Vladimir Airapetian , Jessie Christiansen , Luca Fossati , Kevin France

The study of extrasolar planets has rapidly expanded to encompass the search for new planets, measurements of sizes and masses, models of planetary interiors, planetary demographics and occurrence frequencies, the characterization of…

Instrumentation and Methods for Astrophysics · Physics 2016-04-25 I. J. M. Crossfield

Precise and, if possible, accurate characterization of exoplanets cannot be dissociated from the characterization of their host stars. In this chapter we discuss different methods and techniques used to derive fundamental properties and…

Earth and Planetary Astrophysics · Physics 2017-11-29 Vardan Adibekyan , Sérgio G. Sousa , Nuno C. Santos

A variety of terrestrial planets with different physical parameters and exotic atmospheres might plausibly exist outside our Solar System, waiting to be detected by the next generation of space-exploration missions. Some of these planets…

Exoplanetary science is on the verge of an unprecedented revolution. The thousands of exoplanets discovered over the past decade have most recently been supplemented by discoveries of potentially habitable planets around nearby low-mass…

Earth and Planetary Astrophysics · Physics 2019-09-11 Nikku Madhusudhan

Correct distributions of extrasolar systems for their orbital parameters (semi-major axes, period, eccentricity) and physical characteristics (mass, spectral type of parent star) are received. Orbital resonances in extrasolar systems are…

Earth and Planetary Astrophysics · Physics 2013-01-22 B. R. Mushailov , L . M. Ivanovskaya , V. S. Teplitskaya