Search Results - "Grießmeier, J M"
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Searching for star–planet interactions within the magnetosphere of HD 189733
Published in Monthly notices of the Royal Astronomical Society (21-07-2010)“…HD 189733 is a K2 dwarf, orbited by a giant planet at 8.8 stellar radii. In order to study magnetospheric interactions between the star and the planet, we…”
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THE SEARCH FOR SIGNATURES OF TRANSIENT MASS LOSS IN ACTIVE STARS
Published in The Astrophysical journal (10-10-2016)“…ABSTRACT The habitability of an exoplanet depends on many factors. One such factor is the impact of stellar eruptive events on nearby exoplanets. Currently…”
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Scattering analysis of LOFAR pulsar observations
Published in Monthly notices of the Royal Astronomical Society (21-09-2017)“…Abstract We measure the effects of interstellar scattering on average pulse profiles from 13 radio pulsars with simple pulse shapes. We use data from the LOFAR…”
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LOFAR Discovery of a 23.5 s Radio Pulsar
Published in The Astrophysical journal (10-10-2018)“…We present the discovery of PSR J0250+5854, a radio pulsar with a spin period of 23.5 s. This is the slowest-spinning radio pulsar known. PSR J0250+5854 was…”
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Determining the Beaming of Io Decametric Emissions: A Remote Diagnostic to Probe the Io‐Jupiter Interaction
Published in Journal of geophysical research. Space physics (01-04-2022)“…We investigate the beaming of 11 Io‐Jupiter decametric (Io‐DAM) emissions observed by Juno/Waves, the Nançay Decameter Array, and NenuFAR. Using an up‐to‐date…”
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What makes a planet habitable?
Published in The Astronomy and astrophysics review (01-06-2009)“…This work reviews factors which are important for the evolution of habitable Earth-like planets such as the effects of the host star dependent radiation and…”
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A DEEP CAMPAIGN TO CHARACTERIZE THE SYNCHRONOUS RADIO/X-RAY MODE SWITCHING OF PSR B0943+10
Published in The Astrophysical journal (01-11-2016)“…ABSTRACT Observations of PSR B0943+10 with XMM-Newton and the LOFAR, LWA, and Arecibo radio telescopes in 2014 November confirm the synchronous X-ray/radio…”
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Mass estimates from optical modelling of the new TRAPUM redback PSR J1910−5320
Published in Monthly notices of the Royal Astronomical Society (01-03-2024)“…ABSTRACT Spider pulsars continue to provide promising candidates for neutron star mass measurements. Here we present the discovery of PSR J1910−5320, a new…”
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How expanded ionospheres of Hot Jupiters can prevent escape of radio emission generated by the cyclotron maser instability
Published in Monthly notices of the Royal Astronomical Society (11-08-2017)“…Abstract We present a study of plasma conditions in the atmospheres of the Hot Jupiters HD 209458b and HD 189733b and for an HD 209458b like planet at orbit…”
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Low-frequency Faraday rotation measures towards pulsars using LOFAR: probing the 3D Galactic halo magnetic field
Published in Monthly notices of the Royal Astronomical Society (11-04-2019)“…ABSTRACT We determined Faraday rotation measures (RMs) towards 137 pulsars in the northern sky, using Low-Frequency Array (LOFAR) observations at 110–190 MHz…”
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Discovery of synchronous X-ray and radio moding of PSR B0823+26
Published in Monthly notices of the Royal Astronomical Society (01-11-2018)“…Simultaneous observations of PSR B0823+26 with ESA’s XMM–Newton, the Giant Metrewave Radio Telescope and international stations of the Low Frequency Array…”
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The extreme physical properties of the CoRoT-7b super-Earth
Published in Icarus (New York, N.Y. 1962) (01-05-2011)“…► We discuss the extreme physical properties possible for CoRoT-7b and Kepler-10b. ► We make the working hypothesis that the planets are rocky, with no…”
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Second Data Release from the European Pulsar Timing Array: Challenging the Ultralight Dark Matter Paradigm
Published in Physical review letters (27-10-2023)“…Pulsar Timing Array experiments probe the presence of possible scalar or pseudoscalar ultralight dark matter particles through decade-long timing of an…”
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On the usefulness of existing solar wind models for pulsar timing corrections
Published in Monthly notices of the Royal Astronomical Society (21-07-2019)“…Dispersive delays due to the solar wind introduce excess noise in high-precision pulsar timing experiments, and must be removed in order to achieve the…”
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The low-frequency radio eclipses of the black widow pulsar J1810+1744
Published in Monthly notices of the Royal Astronomical Society (11-05-2018)“…Abstract We have observed and analysed the eclipses of the black widow pulsar J1810+1744 at low radio frequencies. Using LOw-Frequency ARray (LOFAR) and…”
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Can radio emission escape from the magnetosphere of υ Andromedae b – a new method to constrain the minimum mass of Hot Jupiters
Published in Monthly notices of the Royal Astronomical Society (10-04-2022)“…ABSTRACT We investigate the atmospheric and magnetospheric conditions of the massive, close-in exoplanet υ Andromedae b (hereafter ups And b). In particular,…”
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A targeted radio pulsar survey of redback candidates with MeerKAT
Published in Monthly notices of the Royal Astronomical Society (06-05-2024)“…ABSTRACT Redbacks are millisecond pulsar binaries with low-mass, irradiated companions. These systems have a rich phenomenology that can be used to probe…”
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MAGNETOSPHERES OF “HOT JUPITERS”: THE IMPORTANCE OF MAGNETODISKS IN SHAPING A MAGNETOSPHERIC OBSTACLE
Published in The Astrophysical journal (01-01-2012)“…Weak intrinsic magnetic dipole moments of tidally locked close-in giant exoplanets ('hot Jupiters') have been shown in previous studies to be unable to provide…”
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Low-frequency pulse profile variation in PSR B2217+47: evidence for echoes from the interstellar medium
Published in Monthly notices of the Royal Astronomical Society (11-05-2018)“…Abstract We have observed a complex and continuous change in the integrated pulse profile of PSR B2217+47, manifested as additional components trailing the…”
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Simultaneous radio and X-ray observations of PSR B0611+22
Published in Monthly notices of the Royal Astronomical Society (01-11-2016)“…We report results from simultaneous radio and X-ray observations of PSR B0611+22 which is known to exhibit bursting in its single-pulse emission. The pulse…”
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