Oscar Barragán
@exoscar.bsky.social
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📥 43
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| Astrophysicist | exoplanets | Open source lover
reposted by
Oscar Barragán
Planets @ Oxford
28 days ago
Congratulations to Dr Oscar Barragán (
@exoscar.bsky.social
) on the publication of his solo-authored paper, "A Model Selection Criterion for Multidimensional Gaussian Processes: Application to Radial Velocities". You can read it here:
arxiv.org/abs/2606.04875
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A Model Selection Criterion for Multidimensional Gaussian Processes: Application to Radial Velocities
Multidimensional Gaussian Process (multi-GP) regression is widely used to disentangle stellar and planetary signals in radial velocities (RVs) by jointly modelling ancillary activity indicators. Howev...
https://arxiv.org/abs/2606.04875
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Happy to share my first single-author paper, now published! 🎉📄✨🙏 The paper introduces MGIC 🪄, a new criterion for comparing multidimensional Gaussian Process models 📈 If you would like to know more, feel free to get in touch.
doi.org/10.1093/mnra...
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A Model Selection Criterion for Multidimensional Gaussian Processes: Application to Radial Velocities
Abstract. Multidimensional Gaussian Process (multi-GP) regression is widely used to disentangle stellar and planetary signals in radial velocities (RVs) by
https://doi.org/10.1093/mnras/stag1054
about 1 month ago
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reposted by
Oscar Barragán
Planets @ Oxford
4 months ago
Congratulations to Dr Tobias Meier (
@tgmeier.bsky.social
) on the publication of his paper "Mantle Convection and Nightside Volcanism on Lava World K2-141 b" featuring 12 former and current Oxoplanet members! You can read the paper here:
arxiv.org/abs/2603.02408
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Mantle Convection and Nightside Volcanism on Lava World K2-141 b
Ultra-short period lava worlds offer a unique window into the coupled evolution of planetary interior and atmospheres under extreme irradiation. In this study, we investigate the mantle dynamics, nigh...
https://arxiv.org/abs/2603.02408
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reposted by
Oscar Barragán
Planets @ Oxford
6 months ago
Congratulations to Dr Oscar Barragán (
@exoscar.bsky.social
) on his latest publication that has been accepted to the journal MNRAS! He uses multi-GP techniques to obtain mass estimates of the transiting planets around the young star TOI-451. Read more here:
arxiv.org/abs/2601.09438
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Mass estimates of the young TOI-451 transiting planets: Multidimensional Gaussian Process on stellar spectroscopic and photometric signals
The young TOI-451 planetary system, aged 125 Myr, provides a unique opportunity to test theories of planetary internal structures and atmospheric mass loss through examination of its three transiting ...
https://arxiv.org/abs/2601.09438
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reposted by
Oscar Barragán
Planets @ Oxford
11 months ago
Despite some technical hitches, we had a very entertaining and informative Oxoplanets journal club by
@exoscar.bsky.social
and
@astroklein.bsky.social
, all about the mysteries surrounding AU Mic and its planets
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reposted by
Oscar Barragán
Suzanne Aigrain
6 months ago
This week we are hosting the
@terrahunting.bsky.social
science team in Oxford. Terra Hunting will use HARPS3 which is right now being installed on the Isaac Newton Telescope in La Palma to search for nearby Earth analogues. Exciting times!
@oxfordphysics.bsky.social
@oxoplanets.bsky.social
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