Search Publications
Simulation of CSST's astrometric capability
Liao, Shi-Long; Qi, Zhao-Xiang; Shao, Li +5 more
Introduction: The China Space Station Telescope (CSST) will enter a low Earth orbit around 2024 and operate for 10 years, with seven of those years devoted to surveying the area of the median-to-high Galactic latitude and median-to-high Ecliptic latitude of the sky. To maximize the scientific output of CSST, it is important to optimize the survey …
Heliospheric 3-D MHD ENLIL simulations of multi-CME and multi-spacecraft events
Odstrcil, Dusan
Interpreting multi-spacecraft heliospheric observations of the evolving solar wind (SW) streams with propagating and interacting coronal mass ejections (CMEs) is challenging. Numerical simulations can provide global context and suggest what may and may not be observed. The heliospheric three-dimensional (3D) magnetohydrodynamic (MHD) ENLIL model c…
The SunPy Project: An interoperable ecosystem for solar data analysis
Ryan, Daniel F.; Ireland, Jack; Hayes, Laura A. +6 more
The SunPy Project is a community of scientists and software developers creating an ecosystem of Python packages for solar physics. The project includes the sunpy core package as well as a set of affiliated packages. The sunpy core package provides general purpose tools to access data from different providers, read image and time series data, and t…
MORPHOFIT: An automated galaxy structural parameters fitting package
Tortorelli, Luca; Mercurio, Amata
In today's modern wide-field galaxy surveys, there is the necessity for parametric surface brightness decomposition codes characterised by accuracy, small degree of user intervention, and high degree of parallelisation. We try to address this necessity by introducing \textsc{morphofit}, a highly parallelisable \textsc{python} package for the estim…
Review and outlook of solar energetic particle measurements on multispacecraft missions
Reames, Donald V.
The earliest evidence of spatial distributions of solar energetic particles (SEPs) compared events from many different source longitudes on the Sun, but the early Pioneers provided the first evidence of the large areas of equal SEP intensities across the magnetically confined "reservoirs" late in the events. More detailed measurements of the impor…
The high energy X-ray probe (HEX-P): studying extreme accretion with ultraluminous X-ray sources
Maitra, Chandreyee; Mori, Kaya; Wolter, Anna +25 more
Introduction: Ultraluminous X-ray sources (ULXs) represent an extreme class of accreting compact objects: from the identification of some of the accretors as neutron stars to the detection of powerful winds travelling at 0.1–0.2 c, the increasing evidence points towards ULXs harbouring stellar-mass compact objects undergoing highly super-Eddington…
Evaluating the performance of empirical models of total electron density and whistler-mode wave amplitude in the Earth's inner magnetosphere
Ma, Qianli; Shen, Xiao-Chen; Li, Wen +4 more
Empirical models have been previously developed using the large dataset of satellite observations to obtain the global distributions of total electron density and whistler-mode wave power, which are important in modeling radiation belt dynamics. In this paper, we apply the empirical models to construct the total electron density and the wave ampli…
Multi-wavelength observations and modeling of a microflare: constraining non-thermal particle acceleration
Reeves, Katharine K.; Polito, Vanessa; Yu, Sijie +5 more
In this work we analyze a small B-class flare that occurred on 29 April 2021 and was observed simultaneously by the Interface Region Imaging Spectrograph (IRIS) and the Nuclear Spectroscopic Telescope Array (NuSTAR) X-ray instrument. The IRIS observations of the ribbon of the flare show peculiar spectral characteristics that are typical signatures…
Full-wave modeling of EMIC wave packets: ducted propagation and reflected waves
Ma, Qianli; Shen, Xiao-Chen; Hanzelka, Miroslav +4 more
Electromagnetic ion cyclotron (EMIC) waves can scatter radiation belt electrons with energies of a few hundred keV and higher. To accurately predict this scattering and the resulting precipitation of these relativistic electrons on short time scales, we need detailed knowledge of the wave field's spatio-temporal evolution, which cannot be obtained…
On the phenomenology of magnetosheath jets with insight from theory, modelling, numerical simulations and observations by Cluster spacecraft
Voitcu, Gabriel; Echim, Marius; Munteanu, Costel +5 more
During recent years magnetosheath plasma structures called "jets" are identified in spacecraft data as localized regions in the magnetosheath where the dynamic pressure is enhanced compared to the background. Although the nomenclature and detection algorithms vary from author to author, magnetosheath jets are part of a larger class of phenomena wh…