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Aims. With the purpose of determining the orbital parameters of exoplanetary systems from observational data, we have developed a software, named TRADES (TRAnsits and Dynamics of Exoplanetary Systems), to simultaneously fit observed radial…

Earth and Planetary Astrophysics · Physics 2014-11-05 Luca Borsato , Francesco Marzari , Valerio Nascimbeni , Giampaolo Piotto , Valentina Granata , Luigi Rolly Bedin , Luca Malavolta

The error in the Solar system ephemeris will lead to dipolar correlations in the residuals of pulsar timing array for widely separated pulsars. In this paper, we utilize such correlated signals, and construct a Bayesian data-analysis…

Instrumentation and Methods for Astrophysics · Physics 2018-02-16 Y. J. Guo , K. J. Lee , R. N. Caballero

The state of the art in electromagnetic Finite Element Particle-in-Cell (EM-FEMPIC) has advanced significantly in the last few years. These have included understanding function spaces that must be used to represent sources and fields…

Computational Physics · Physics 2022-08-29 Omkar H. Ramachandran , Zane D. Crawford , Scott O'Connor , John Luginsland , B. Shanker

We present the third data release from the Parkes Pulsar Timing Array (PPTA) project. The release contains observations of 32 pulsars obtained using the 64-m Parkes "Murriyang" radio telescope. The data span is up to 18 years with a typical…

We present timing models for 20 millisecond pulsars in the Parkes Pulsar Timing Array. The precision of the parameter measurements in these models has been improved over earlier results by using longer data sets and modelling the…

We present a detailed transit photometric analysis of the ultra-hot Jupiter WASP-12 b using data from the Transiting Exoplanet Survey Satellite (TESS). The study is based on publicly available calibrated light curves and target pixel files…

Earth and Planetary Astrophysics · Physics 2026-01-09 Chinedu Jude Nnaji

We examine the capacity to identify binary systems from astrometric errors and deviations alone. Until the release of the fourth Gaia data release we lack the full astrometric time series that the satellite records, but as we show can still…

Solar and Stellar Astrophysics · Physics 2022-04-27 Zephyr Penoyre , Vasily Belokurov , N. Wyn Evans

The Green Bank North Celestial Cap survey is one of the largest and most sensitive searches for pulsars and transient radio objects. Observations for the survey have finished; priorities have shifted toward long-term monitoring of its…

Data from the Kepler space telescope have led to the discovery of thousands of planet candidates. Most of these candidates are likely to be real exoplanets, but a significant number of false positives still contaminate the sample,…

Earth and Planetary Astrophysics · Physics 2024-05-08 Drake A. Lehmann , Andrew Vanderburg

Here we present a Bayesian method of including discrete measurements of dispersion measure due to the interstellar medium in the direction of a pulsar as prior information in the analysis of that pulsar. We use a simple simulation to show…

Instrumentation and Methods for Astrophysics · Physics 2013-12-10 Lindley Lentati , Paul Alexander , Michael P. Hobson

We report on long-term monitoring of anomalous X-ray pulsars (AXPs) using the Rossi X-ray Timing Explorer. Using phase-coherent timing, we find a wide variety of behaviors among the sources, ranging from high stability (in 1E 2259.1+586 and…

Astrophysics · Physics 2009-09-25 Fotis P. Gavriil , Victoria M. Kaspi , Deepto Chakrabarty

An automatic Bayesian Kepler periodogram has been developed for identifying and characterizing multiple planetary orbits in precision radial velocity data. The periodogram is powered by a parallel tempering MCMC algorithm which is capable…

Astrophysics · Physics 2008-11-26 P. C. Gregory

We introduce ASSIST, a software package for ephemeris-quality integrations of test particles. ASSIST is an extension of the REBOUND framework and makes use of its IAS15 integrator to integrate test particle trajectories in the field of the…

Earth and Planetary Astrophysics · Physics 2023-03-30 Matthew J. Holman , Arya Akmal , Davide Farnocchia , Hanno Rein , Matthew J. Payne , Robert Weryk , Daniel Tamayo , David M. Hernandez

While short-term models such as the Short-Term Earthquake Probability (STEP) and Epidemic-Type Aftershock Sequence (ETAS) are well established and supported by open-source software, medium- to long-term models, notably the Every Earthquake…

Geophysics · Physics 2025-12-17 Szu-Chi Chung , Chien-Hong Cho , Strong Wen

Any unambiguous detection of a stochastic gravitational wave background by a pulsar timing array will rest on the measurement of a characteristic angular correlation between pulsars. The ability to measure this correlation will depend on…

High Energy Astrophysical Phenomena · Physics 2019-05-27 Elinore Roebber

Pulsar binaries, in particular redback systems, provide good sources to study the pulsar wind flow and its interaction with the companion stars. {\it Fermi}-LAT have proposed probable pulsar binary candidates in its catalogs. To identify…

High Energy Astrophysical Phenomena · Physics 2020-06-14 Partha Sarathi Pal , P. H. T. Tam , Weitang Liang , Chengye Cao , K. L. Li , C. Y. Hui , A. K. H. Kong

Abstract abridged. Eclipsing binary systems provide the opportunity to measure the fundamental parameters of their component stars in a stellar-model-independent way. This makes them ideal candidates for testing and calibrating theories of…

Instrumentation and Methods for Astrophysics · Physics 2024-02-12 Luc W. IJspeert , Andrew Tkachenko , Cole Johnston , Andrej Prša , Mark A. Wells , Conny Aerts

The algorithm of the ensemble pulsar time scale (PT$_{\rm ens}$) based on the optimal Wiener filtration method has been proposed. This algorithm allows the separation of the contributions to the post-fit pulsar timing residuals of the…

Instrumentation and Methods for Astrophysics · Physics 2011-09-20 Alexander E. Rodin

Over the past 13 years, the Parkes radio telescope has observed a large number of pulsars using digital filterbank backends with high time and frequency resolution and the capability for Stokes recording. Here we use archival data to…

High Energy Astrophysical Phenomena · Physics 2017-12-27 Simon Johnston , Matthew Kerr

The ability to make independent detections of the signatures of exoplanets with complementary telescopes and instruments brings a new potential for robust identification of exoplanets and precision characterization. We introduce PEXO, a…

Earth and Planetary Astrophysics · Physics 2019-11-21 Fabo Feng , Maksym Lisogorskyi , Hugh R. A. Jones , Sergei M. Kopeikin , R. Paul Butler , Guillem Anglada-Escude , Alan P. Boss