A toolkit for pulsar hunters.

update log 1. residuals_plot.py; this code generates publication-quality pulsar timing residual plots from TEMPO (https://tempo.sourceforge.net/tempo_idx.html) resid2.tmp files. 2. ACCEL_sift.py; a modified version of PRESTO (https://www.cv.nrao.edu/~sransom/presto/) toolkit’s original script, allowing users to run the sifting routine directly with command-line input parameters for more flexible and convenient use. 3. FAST_tracking.py; this script calculates and plots the altitude tracks (also tracking time) of celestial sources observed by the Five-hundred-meter Aperture Spherical radio Telescope (FAST, https://fast.bao.ac.cn/) for a given date and specified source(s). 4. PulsarHub.md; a catalog of several pulsar catalogs. 5. Note.md; a personal note. 6. candidate.py and dmiter.py are used in FFA search package riptide (https://github.com/v-morello/riptide) for generating customized candidate plots and ignoring optimal DM step plan. 7. PulsarPICK, a simple pipeline adapted from PRESTO's ACCEL_sift.py for processing accelsearch results. It also generates user-friendly candidate diagnostic plots by combining the standard time-series folding plot with a trial-DM versus detection-significance curve, where real pulsars typically show a bell-shaped peak around the optimal DM. 8. Astronomy_Alerts; a simple pipeline for aggregating ATel (The Astronomer's Telegram, https://www.astronomerstelegram.org/) and GCN Circular (NASA's Time-Domain and Multimessenger Alert System, https://gcn.nasa.gov/circulars) emails using a Tencent email address (QQ). 9. ATNF_PSRcat_download.ipynb; a simple PulsarCAT download tutorial with the psrqpy package (https://psrqpy.readthedocs.io/en/latest/index.html). ...