The search for radio emission from exoplanets using LOFAR beam-formed observations
International audience The detection of exoplanetary magnetic fields is one of the most elusive hunts in exoplanet science today. Observing the magnetic field of an exoplanet will give valuable information to constrain their interior structure, atmospheric escape, and the nature of any star-planet i...
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ftunivorleans:oai:HAL:insu-03563835v1 2024-09-09T19:47:44+00:00 The search for radio emission from exoplanets using LOFAR beam-formed observations Turner, Jake D. Griessmeier, Jean-Mathias Zarka, Philippe Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E) Observatoire des Sciences de l'Univers en région Centre (OSUC) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales Paris (CNES) Unité Scientifique de la Station de Nançay (USN) Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA (UMR_8109)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Reykjavik, Iceland 2019-08-19 https://insu.hal.science/insu-03563835 en eng HAL CCSD insu-03563835 https://insu.hal.science/insu-03563835 BIBCODE: 2019ESS.433317T American Astronomical Society Extreme Solar Systems 4 https://insu.hal.science/insu-03563835 American Astronomical Society Extreme Solar Systems 4, Aug 2019, Reykjavik, Iceland [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/conferenceObject Conference papers 2019 ftunivorleans 2024-06-24T23:57:30Z International audience The detection of exoplanetary magnetic fields is one of the most elusive hunts in exoplanet science today. Observing the magnetic field of an exoplanet will give valuable information to constrain their interior structure, atmospheric escape, and the nature of any star-planet interactions. Additionally, the magnetic fields on Earth-like exoplanets might help contribute to their sustained habitability by deflecting energetic stellar wind particles. The most promising method to detect exoplanet magnetic fields is radio emission observations since this method is not susceptible to false positives. All the magnetized planets and moons in our Solar System emit in the radio using the Cyclotron Maser Instability (CMI) mechanism. To date, many ground-based observations conducted to find exoplanet radio emission have resulted in non-detections. In this talk, we discuss our ongoing observational campaign searching for exoplanetary radio emissions using beam-formed observations with the Low Band of the Low-Frequency Array (LOFAR). To date we have observed three exoplanetary systems: 55 Cnc, Upsilon Andromedae, and Tau Boötis. These planets were selected according to theoretical predictions, which indicated them as among the best candidates for an observation. Data analysis is currently ongoing. In order to test, validate, and quantify the sensitivity reached with our LOFAR pipeline, we apply it to a LOFAR observation of Jupiter's magnetospheric radio emission in which the signal from Jupiter is attenuated. The idea is simple: we observe Jupiter, divide its signal by a fixed factor before adding it to an observation of sky background, thereby creating an artificial dataset best described as "Jupiter as an exoplanet". We then run our pipeline and check whether the (attenuated) radio signal from Jupiter is detected. The maximum factor by which we can divide Jupiter's signal and still achieve a detection gives the sensitivity of our setup. We find that circularly polarized exoplanetary radio bursts can ... Conference Object Iceland Université d'Orléans: HAL Jupiter ENVELOPE(101.133,101.133,-66.117,-66.117) |
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Université d'Orléans: HAL |
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English |
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[SDU]Sciences of the Universe [physics] |
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[SDU]Sciences of the Universe [physics] Turner, Jake D. Griessmeier, Jean-Mathias Zarka, Philippe The search for radio emission from exoplanets using LOFAR beam-formed observations |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience The detection of exoplanetary magnetic fields is one of the most elusive hunts in exoplanet science today. Observing the magnetic field of an exoplanet will give valuable information to constrain their interior structure, atmospheric escape, and the nature of any star-planet interactions. Additionally, the magnetic fields on Earth-like exoplanets might help contribute to their sustained habitability by deflecting energetic stellar wind particles. The most promising method to detect exoplanet magnetic fields is radio emission observations since this method is not susceptible to false positives. All the magnetized planets and moons in our Solar System emit in the radio using the Cyclotron Maser Instability (CMI) mechanism. To date, many ground-based observations conducted to find exoplanet radio emission have resulted in non-detections. In this talk, we discuss our ongoing observational campaign searching for exoplanetary radio emissions using beam-formed observations with the Low Band of the Low-Frequency Array (LOFAR). To date we have observed three exoplanetary systems: 55 Cnc, Upsilon Andromedae, and Tau Boötis. These planets were selected according to theoretical predictions, which indicated them as among the best candidates for an observation. Data analysis is currently ongoing. In order to test, validate, and quantify the sensitivity reached with our LOFAR pipeline, we apply it to a LOFAR observation of Jupiter's magnetospheric radio emission in which the signal from Jupiter is attenuated. The idea is simple: we observe Jupiter, divide its signal by a fixed factor before adding it to an observation of sky background, thereby creating an artificial dataset best described as "Jupiter as an exoplanet". We then run our pipeline and check whether the (attenuated) radio signal from Jupiter is detected. The maximum factor by which we can divide Jupiter's signal and still achieve a detection gives the sensitivity of our setup. We find that circularly polarized exoplanetary radio bursts can ... |
author2 |
Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E) Observatoire des Sciences de l'Univers en région Centre (OSUC) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales Paris (CNES) Unité Scientifique de la Station de Nançay (USN) Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA (UMR_8109)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Conference Object |
author |
Turner, Jake D. Griessmeier, Jean-Mathias Zarka, Philippe |
author_facet |
Turner, Jake D. Griessmeier, Jean-Mathias Zarka, Philippe |
author_sort |
Turner, Jake D. |
title |
The search for radio emission from exoplanets using LOFAR beam-formed observations |
title_short |
The search for radio emission from exoplanets using LOFAR beam-formed observations |
title_full |
The search for radio emission from exoplanets using LOFAR beam-formed observations |
title_fullStr |
The search for radio emission from exoplanets using LOFAR beam-formed observations |
title_full_unstemmed |
The search for radio emission from exoplanets using LOFAR beam-formed observations |
title_sort |
search for radio emission from exoplanets using lofar beam-formed observations |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://insu.hal.science/insu-03563835 |
op_coverage |
Reykjavik, Iceland |
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ENVELOPE(101.133,101.133,-66.117,-66.117) |
geographic |
Jupiter |
geographic_facet |
Jupiter |
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Iceland |
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Iceland |
op_source |
American Astronomical Society Extreme Solar Systems 4 https://insu.hal.science/insu-03563835 American Astronomical Society Extreme Solar Systems 4, Aug 2019, Reykjavik, Iceland |
op_relation |
insu-03563835 https://insu.hal.science/insu-03563835 BIBCODE: 2019ESS.433317T |
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1809917141528346624 |