39 citations · 55 across the 11 of their papers we have counts for
11 papers
Lynx2030 Science Analysis Group: Final Report
Lynx2030 Science Analysis Group, Simon R. Bandler, Laura W. Brenneman +51
The Lynx2030 Science Analysis Group (SAG) was convened to reassess the scientific goals and technical drivers of the Lynx mission concept amid a rapidly evolving astrophysics lands…
A comparison of methods for Poisson regression in the presence of background
Massimiliano Bonamente, Vinay Kashyap, Xiaoli Li +1
This paper provides a statistical analysis of three common methods of regression for Poisson data in the presence of Poisson background, namely the joint fit with two parametric mo…
Detecting stellar flares in the presence of a deterministic trend and stochastic volatility
Qiyuan Wang, Giovanni Motta, Genaro Sucarrat +1
We develop a new and powerful method to analyze time series to rigorously detect flares in the presence of an irregularly oscillatory baseline, and apply it to stellar light curves…
XRISM view of a stellar flare: High-resolution Fe K spectra of HR 1099, an RS CVn-type star
Miki Kurihara, Masahiro Tsujimoto, Michael Loewenstein +21
A high-resolution X-ray spectroscopic observation was made of the RS CVn-type binary star HR 1099 using the Resolve instrument onboard XRISM for its calibration purposes. During th…
A simple, flexible method for timing cross-calibration of space missions
Matteo Bachetti, Yukikatsu Terada, Megumi Shidatsu +25
The timing (cross-)calibration of astronomical instruments is often done by comparing pulsar times-of-arrival (TOAs) to a reference timing model. In high-energy astronomy, the choi…
Representation Learning for Time-Domain High-Energy Astrophysics: Discovery of Extragalactic Fast X-ray Transient XRT 200515
Steven Dillmann, Juan Rafael Martínez-Galarza, Roberto Soria +2
We present a novel representation learning method for downstream tasks like anomaly detection, unsupervised classification, and similarity searches in high-energy data sets. This e…
International Astrophysical Consortium for High-energy Calibration: Summary of the 15th IACHEC Workshop
K. K. Madsen, V. Burwitz, K. Forster +8
In this report, we summarize the activities of the International Astronomical Consortium for High Energy Calibration (IACHEC) from the 15th IACHEC Workshop in Pelham, Germany. Sixt…
Spectral fit residuals as an indicator to increase model complexity
Anshuman Acharya, Vinay L. Kashyap
Spectral fitting of X-ray data usually involves minimizing statistics like the chi-square and the Cash statistic. Here we discuss their limitations and introduce two measures based…
Front-row seat of the recent R Aqr periastron passage: X-ray multi-epoch spectral and spatial analysis
A. Sacchi, M. Karovska, J. Raymond +7
We report on the X-ray spectral and spatial evolution of the Symbiotic star R Aqr. Through a multi-epoch observational campaign performed with Chandra between 2017 and 2022, we stu…
Summary of the 14th IACHEC Meeting
K. K. Madsen, Y. Terada, V. Burwitz +8
We summarize the 14th meeting of the International Astronomical Consortium for High Energy Calibration (IACHEC) held at \textit{Shonan Village} (Kanagawa, Japan) in May 2019. Sixty…
The high-energy environment in the super-earth system CoRoT-7
K. Poppenhaeger, S. Czesla, S. Schröter +3
High-energy irradiation of exoplanets has been identified to be a key influence on the stability of these planets' atmospheres. So far, irradiation-driven mass-loss has been observ…