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We present a new method for performing atmospheric retrieval on ground-based, high-resolution data of exoplanets. Our method combines cross-correlation functions with a random forest, a supervised machine learning technique, to overcome…

Earth and Planetary Astrophysics · Physics 2020-04-15 Chloe Fisher , H. Jens Hoeijmakers , Daniel Kitzmann , Pablo Márquez-Neila , Simon L. Grimm , Raphael Sznitman , Kevin Heng

We present our software to compute gamma-ray emission from inverse-Compton scattering by cosmic-ray leptons in the heliosphere, as well as in the photospheres of stars. It includes a formulation of modulation in the heliosphere, but it can…

Solar and Stellar Astrophysics · Physics 2015-06-15 Elena Orlando , Andrew W. Strong

astroquery is a collection of tools for requesting data from databases hosted on remote servers with interfaces exposed on the internet, including those with web pages but without formal application program interfaces (APIs). These tools…

We present dynesty, a public, open-source, Python package to estimate Bayesian posteriors and evidences (marginal likelihoods) using Dynamic Nested Sampling. By adaptively allocating samples based on posterior structure, Dynamic Nested…

Instrumentation and Methods for Astrophysics · Physics 2020-02-12 Joshua S Speagle

This paper presents gnss_lib_py, a Python library used to parse, analyze, and visualize data from a variety of GNSS (Global Navigation Satellite Systems) data sources. The gnss_lib_py library's ease of use, modular capabilities, testing…

Robotics · Computer Science 2024-08-20 Derek Knowles , Ashwin Vivek Kanhere , Daniel Neamati , Grace Gao

The question of the nature of the dark matter in the Universe remains one of the most outstanding unsolved problems in basic science. One of the best motivated particle physics candidates is the lightest supersymmetric particle, assumed to…

Astrophysics · Physics 2016-11-03 Paolo Gondolo , Joakim Edsjo , Lars Bergstrom , Piero Ullio , Edward A. Baltz

Hot Jupiters are very good targets for transmission spectroscopy analysis. Their atmospheres have a large scale height implying a high signal to noise ratio. As these planets orbit close to their stars, they often present strong thermal and…

Earth and Planetary Astrophysics · Physics 2022-02-02 William Pluriel , Jeremy Leconte , Vivien Parmentier , Tiziano Zingales , Aurelien Falco , Franck Selsis , Pascal Borde

cityseer-api is a Python package consisting of computational tools for fine-grained street-network and land-use analysis, helpful in assessing the morphological precursors to vibrant neighbourhoods. It is underpinned by network-based…

Social and Information Networks · Computer Science 2022-07-01 Gareth D. Simons

The emission lines from ionized nebulae allow us to determine their physical and chemical properties, along with the interstellar extinction. "pyEQUIB" is a pure Python open-source package including several application programming interface…

Instrumentation and Methods for Astrophysics · Physics 2024-11-25 A. Danehkar

Spectra of exoplanet atmospheres provide us the opportunity to improve our understanding of these objects just as remote sensing in our own solar system has increased our understanding of the solar system bodies. The challenge is to…

Earth and Planetary Astrophysics · Physics 2015-06-15 Michael R. Line , Aaron Wolf , Xi Zhang , Heather Knutson , Joshua Kammer , Elias Ellison , Pieter Deroo , Dave Crisp , Yuk Yung

Nested sampling is an increasingly popular technique for Bayesian computation, in particular for multimodal, degenerate problems of moderate to high dimensionality. Without appropriate settings, however, nested sampling software may fail to…

Computation · Statistics 2019-01-23 Edward Higson , Will Handley , Mike Hobson , Anthony Lasenby

Cloud computing offers an opportunity to run compute-resource intensive climate models at scale by parallelising model runs such that datasets useful to the exoplanet community can be produced efficiently. To better understand the…

Detecting and characterising exoplanet atmospheres remains challenging because atmospheric signals can be comparable to residual noise and instrumental/astrophysical systematics. Spectral features span from a few ppm for small planets up to…

It has been shown that spectroscopy of transiting extrasolar planets can potentially provide a wealth of information about their atmospheres. Herein, we set up the inverse problem in spectroscopic retrieval. We use non-linear optimal…

Earth and Planetary Astrophysics · Physics 2015-06-03 M. R. Line , X. Zhang , G. Vaisht , P. Chen , V. Natraj , P. Chen , Y. L. Yung

We present sensipy, an open-source Python toolkit for simulating observations of transient astrophysical sources, particularly in the high-energy (HE, keV-GeV) and very-high-energy (VHE, GeV-TeV) gamma-ray ranges. The most explosive events…

High Energy Astrophysical Phenomena · Physics 2026-02-16 Jarred G. Green , Barbara Patricelli , Antonio Stamerra , Monica Seglar-Arroyo

The most productive tracer of exoplanetary atmospheric escape is the measurement of excess absorption in the near-infrared metastable helium triplet during transits. Atmospheric escape of a close-in planet's atmosphere plays a role in its…

Earth and Planetary Astrophysics · Physics 2026-02-04 C. Farret Jentink , V. Bourrier , Y. Carteret

Transmission spectroscopy is the most widely used technique for studying exoplanet atmospheres. Since the planetary nightside faces the observer during a transit, highly irradiated giant exoplanets with warm nightsides emit thermal…

Earth and Planetary Astrophysics · Physics 2024-08-16 John A. Kappelmeier , Ryan J. MacDonald , Nikole K. Lewis

Exoplanets are now being discovered in profusion. However, to understand their character requires spectral models and data. These elements of remote sensing can yield temperatures, compositions, and even weather patterns, but only if…

Earth and Planetary Astrophysics · Physics 2015-06-23 Adam Burrows

Since its launch in 2008, the Fermi Large Area Telescope (LAT) allowed us to peek into the extremely energetic side of the Universe with unprecedented sensitivity and resolution. The tools available for analyzing Fermi-LAT data are the…

High Energy Astrophysical Phenomena · Physics 2022-06-24 Raniere de Menezes

DADApy is a python software package for analysing and characterising high-dimensional data manifolds. It provides methods for estimating the intrinsic dimension and the probability density, for performing density-based clustering and for…