To find and download HEASARC data in the cloud, you can use astroquery.heasarc or download our new tool, hark.
The HEASARC and NuSTAR teams are greatly saddened by the sudden passing of Katja Pottschmidt. Most recently Katja was the lead scientist for the NuSTAR Guest Observer Facility (GOF), a role she had supported for many years. During her science career she worked on many other high energy astrophysics missions and played an integral role in advancing our knowledge of the universe. She was a wonderful colleague and friend and will be keenly missed by all who knew her.
XPI
This is the command line interface used in Xselect. It has some useful features for listing the available commands, their parameters, and the current defaults. It also has scripting and alias facilities. It is not case sensitive, and does command completion for both command names and parameter names, so you need enter only the shortest unique string for any command.
The UNIX version also inherits the nice command line editing features of the READLINE library, which has an EMACS like syntax for command line searches, and supports up and down arrow history recall, and filename completion using the tab key.
It has some magic characters, which are captured in the parser, and so they must be surrounded by double quotes to get past XPI.
In most cases, XPI is fairly forgiving, so you do not need too detailed a knowledge of it. For all practical purposes, you only need to know what the magic characters are (see magic), and the general syntax of the command line.
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