A bright long-period radio transient shows periodic X-ray emission at the same 44.2-minute period, making it the first LPT detected in X-rays and establishing a new class of hour-scale periodic X-ray transients.
A Python Calculator for Supernova Remnant Evolution
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abstract
A freely available Python code for modelling SNR evolution has been created. This software is intended for two purposes: to understand SNR evolution; and to use in modelling observations of SNR for obtaining good estimates of SNR properties. It includes all phases for the standard path of evolution for spherically symmetric SNRs. In addition, alternate evolutionary models are available, including evolution in a cloudy ISM, the fractional energy loss model, and evolution in a hot low-density ISM. The graphical interface takes in various parameters and produces outputs such as shock radius and velocity vs. time, SNR surface brightness profile and spectrum. Some interesting properties of SNR evolution are demonstrated using the program.
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Detection of X-ray Emission from a Bright Long-Period Radio Transient
A bright long-period radio transient shows periodic X-ray emission at the same 44.2-minute period, making it the first LPT detected in X-rays and establishing a new class of hour-scale periodic X-ray transients.