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VarStar Detect is a Python package available on PyPI optimized for the detection of variability inside photometric measurements. Based off of the Least Squares method of regression, VarStar Detect calculates the amplitude of a Fourier…

Instrumentation and Methods for Astrophysics · Physics 2023-01-16 Jorge Perez Gonzalez , Nicolas Carrizosa Arias , Andres Cadenas Blanco

Solar radio bursts (SRBs) are intense emissions observed in radio wavelengths most frequently during solar transients, such as coronal mass ejections (CMEs) and flares. SRBs are direct signatures of accelerated electrons in the solar…

The Solar Radiospectrograph of the University of Athens (ARTEMIS-IV) is in operation at the Thermopylae Satellite Communication Station since 1996. The observations extend from the base of the Solar Corona (650 MHz) to about 2 Solar Radii…

Earth-based observations are complicated by the opacity of Earth's ionosphere at very low frequencies and strong man-made radio frequency interference. This explains long standing interest in building a low frequency radio telescope on the…

Scanning transmission electron microscopy (STEM) allows for imaging, diffraction, and spectroscopy of materials on length scales ranging from microns to atoms. By using a high-speed, direct electron detector, it is now possible to record a…

Gamma-ray polarimetry is a new powerful tool to study the processes responsible for the emission from astrophysical sources and the environments in which this emission takes place. Few successful polarimetric measurements have however been…

The Cosmological Advanced Survey Telescope for Optical and UV Research (CASTOR) is a planned flagship space telescope, covering the blue-optical and UV part of the spectrum. Here we introduce the CASTOR image simulator, a Python GalSim…

The very nature of the solar chromosphere, its structuring and dynamics, remains far from being properly understood, in spite of intensive research. Here we point out the potential of chromospheric observations at millimeter wavelengths to…

Astrophysics · Physics 2009-06-23 M. A. Loukitcheva , S. K. Solanki , S. White

Studying the vocalisations of wild animals can be a challenge due to the limitations of traditional computational methods, which often are time-consuming and lack reproducibility. Here, I present pykanto, a new software package that…

Sound · Computer Science 2023-06-12 Nilo Merino Recalde

We have reprocessed a set of observations of 75 bright, unidentified, steep-spectrum polarized radio sources taken with the Green Bank 43-m telescope to find previously undetected sub-millisecond pulsars and radio bursts. The (null) results…

High Energy Astrophysical Phenomena · Physics 2021-02-03 F. Crawford , J. Margeson , B. Nguyen , T. Saigal , O. Young , D. Agarwal , K. Aggarwal

A new generation of observational science instruments is dramatically increasing collected data volumes in a range of fields. These instruments include the Square Kilometre Array (SKA), Large Synoptic Survey Telescope (LSST), terrestrial…

Instrumentation and Methods for Astrophysics · Physics 2013-07-24 David R. Thompson , Sarah Burke-Spolaor , Adam T. Deller , Walid A. Majid , Divya Palaniswamy , Steven J. Tingay , Kiri L. Wagstaff , Randall B. Wayth

The VST Telescope Control Software logs continuously detailed information about the telescope and instrument operations. Commands, telemetries, errors, weather conditions and anything may be relevant for the instrument maintenance and the…

Instrumentation and Methods for Astrophysics · Physics 2021-01-05 Salvatore Savarese , Pietro Schipani , Giulio Capasso , Mirko Colapietro , Sergio D'Orsi , Laurent Marty , Francesco Perrotta

We present a numerical code to simulate maps of Galactic emission in intensity and polarization at microwave frequencies, aiding in the design of Cosmic Microwave Background experiments. This Python code builds on existing efforts to…

Cosmology and Nongalactic Astrophysics · Physics 2017-06-21 Ben Thorne , Jo Dunkley , David Alonso , Sigurd Naess

Source imaging of solar radio bursts can be used to track energetic electrons and associated magnetic structures. Here we present a combined analysis of data at different wavelengths for an eruption associated with a moving type-IV (t-IVm)…

Solar and Stellar Astrophysics · Physics 2019-01-09 V. Vasanth , Yao Chen , Maoshui Lv , Hao Ning , Chuangyang Li , Shiwei Feng , Zhao Wu , Guohui Du

DUSTY solves the problem of radiation transport in a dusty environment. The code can handle both spherical and planar geometries. The user specifies the properties of the radiation source and dusty region, and the code calculates the dust…

Astrophysics · Physics 2007-05-23 Zeljko Ivezic , Maia Nenkova , Moshe Elitzur

The Spectro-Polarimeter (SP) is a new instrument installed at the upgraded Andrei B. Severny Solar Tower Telescope (STT) at the Crimean Astrophysical Observatory. The instrument is a traditional echelle slit dual-beam spectropolarimeter…

Drift-pair bursts are an unusual type of solar low-frequency radio emission, which appear in the dynamic spectra as two parallel drifting bright stripes separated in time. Recent imaging spectroscopy observations allowed for the…

Solar and Stellar Astrophysics · Physics 2020-07-30 Alexey A. Kuznetsov , Nicolina Chrysaphi , Eduard P. Kontar , Galina Motorina

Asteroseismology is well-established in astronomy as the gold standard for determining precise and accurate fundamental stellar properties like masses, radii, and ages. Several tools have been developed for asteroseismic analyses but many…

Solar and Stellar Astrophysics · Physics 2021-09-08 Ashley Chontos , Daniel Huber , Maryum Sayeed , Pavadol Yamsiri

Radio halos are diffuse, extended sources of radio emission detected primarily in massive, merging galaxy clusters. In smaller and/or relaxed clusters, where no halos are detected, one can instead place upper limits to a possible radio…

Instrumentation and Methods for Astrophysics · Physics 2021-02-10 Lijo T. George , Ruta Kale , Yogesh Wadadekar

MASER (Measurements, Analysis, and Simulation of Emission in the Radio range) is a comprehensive infrastructure dedicated to time-dependent low frequency radio astronomy (up to about 50 MHz). The main radio sources observed in this spectral…