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http://www.cv.nrao.edu/~sransom/presto/ | ||
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PRESTO is a large suite of pulsar search and analysis software | ||
developed by Scott Ransom mostly from scratch. It was primarily | ||
designed to efficiently search for binary millisecond pulsars from | ||
long observations of globular clusters (although it has since been | ||
used in several surveys with short integrations and to process a lot | ||
of X-ray data as well). It is written primarily in ANSI C, with many | ||
of the recent routines in Python. According to Steve Eikenberry, | ||
PRESTO stands for: **PulsaR Exploration and Search TOolkit**! | ||
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**To date, PRESTO has discovered over 300 pulsars, including | ||
more than 150 recycled pulsars, most of which are in binaries!** | ||
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## New in Version 2: | ||
* WAPP, BCPM, Spigot, and 1-bit analog filterbank data are deprecated! | ||
(see below) | ||
* Dramatically improved internal handling (giving better dynamic | ||
range and RFI removal) of PSRFITS and SIGPROC filterbank data | ||
* Massive speed-ups (factors of 2 or more) of `accelsearch` when | ||
all of the F-Fdot plane can fit into core memory (that can be set | ||
by changing values in `include/meminfo.h`) | ||
* Many bug fixes and several new scripts (including new orbit fitters) | ||
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developed by Scott Ransom mostly from scratch, and released under the | ||
GPL (v2). It was primarily designed to efficiently search for binary | ||
millisecond pulsars from long observations of globular clusters | ||
(although it has since been used in several surveys with short | ||
integrations and to process a lot of X-ray data as well). It is | ||
written primarily in ANSI C, with many of the recent routines in | ||
Python. According to Steve Eikenberry, PRESTO stands for: PulsaR | ||
Exploration and Search TOolkit! | ||
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||
**PRESTO has discovered over 600 pulsars, including more than 230 | ||
recycled and/or binary pulsars!** | ||
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## New in Version 2.1: | ||
* `accelsearch` now has a "jerk" search capability (thanks to UVA | ||
undergrad Bridget Anderson for help with this!). This makes | ||
searches take a *lot* longer, but definitely improves sensitivity | ||
when the observation duration is 5-15% of the duration of the orbital | ||
period. Typically -wmax should be set to 3-5x -zmax (and you probably | ||
never need to set -zmax to anything larger than 300). | ||
* Ability to ignore bad channels on the command line (-ignorechan) | ||
(see `rfifind_stats.py` and `weights_to_ignorechan.py`) | ||
* Lots of new python utilities (such as for handling RFI, showing | ||
bandpasses, making waterfall plots, ...) | ||
* New wrappers for the python interface (will make the transition | ||
to Python 3.X much smoother later this year) | ||
* Many bug fixes and minor improvements | ||
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## About PRESTO: | ||
PRESTO is written with portability, ease-of-use, and memory efficiency | ||
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from Parkes) | ||
* 1-, 2-, 4-, 8-, and 32-bit (float) filterbank format from SIGPROC | ||
* A time series composed of single precision (i.e. 4-byte) | ||
floating point data | ||
floating point data (with a text ".inf" file describing it) | ||
* Photon arrival times (or events) in ASCII or double-precision | ||
binary formats | ||
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Notice that the following formats which *used* to be supported are not: | ||
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* Wideband Arecibo Pulsar Processor (WAPP) at Arecibo | ||
* The Parkes and Jodrell Bank 1-bit filterbank formats | ||
* SPIGOT at the GBT (may it RIP...) | ||
* Berkeley-Caltech Pulsar Machine (BCPM) at the GBT (may it RIP...) | ||
* SPIGOT at the GBT | ||
* Berkeley-Caltech Pulsar Machine (BCPM) at the GBT | ||
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If you need to process them, you can either checkout the "classic" | ||
branch of PRESTO (see below), which is not being actively developed. | ||
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1. Data Preparation: Interference detection (`rfifind`) and removal | ||
(`zapbirds`) , de-dispersion (`prepdata`, `prepsubband`, and | ||
`mpiprepsubband`), barycentering (via TEMPO). | ||
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2. Searching: Fourier-domain acceleration (`accelsearch`), single-pulse | ||
(`single_pulse_search.py`), and phase-modulation or sideband searches | ||
(`search_bin`). | ||
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3. Folding: Candidate optimization (`prepfold`) and Time-of-Arrival | ||
(TOA) generation (`get_TOAs.py`). | ||
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4. Misc: Data exploration (`readfile`, `exploredat`, `explorefft`), | ||
de-dispersion planning (`DDplan.py`), date conversion (`mjd2cal`, | ||
`cal2mjd`), tons of python pulsar/astro libraries, average pulse | ||
creation, flux density estimation, and more... | ||
5. Post Single Pulse Searching Tools: Grouping algorithm (`rrattrap.py`), | ||
Production and of single pulse diagnostic plots (`make_spd.py` and | ||
`plot_spd.py`). | ||
Production and of single pulse diagnostic plots (`make_spd.py`, | ||
`plot_spd.py`, and `waterfaller.py`). | ||
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Many additional utilities are provided for various tasks that are | ||
often required when working with pulsar data such as time conversions, | ||
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usage when you call it with no arguments. I am also willing to | ||
provide limited support via email or telephone (434-296-0320). | ||
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**Tutorial**: Note that in the "docs" directory there is a now a | ||
tutorial which walks you through all the main steps of finding pulsars | ||
using PRESTO. This will need some small modifications given that | ||
PRESTO can't currently process one of the example files (BCPM!). | ||
**Tutorial**: Note that in the "docs" directory there is a tutorial | ||
which walks you through all the main steps of finding pulsars using | ||
PRESTO. | ||
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## Getting it: | ||
The PRESTO source code is released under the GPL and | ||
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then build as per the (old) INSTALL file. | ||
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### Development: | ||
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If you plan to tweak the code, I highly suggest that you use git and | ||
clone the directory (or fork it using an account on github). Read the | ||
following "living document" on how to develop and collaborate in a | ||
relatively sane way using git: | ||
http://docs.scipy.org/doc/numpy/dev/gitwash/index.html | ||
If you plan on doing any significant development, please let me know | ||
and I'll either add you as a developer, or we can push/pull changes | ||
via git/github (see the "gitwash" document above). | ||
clone the directory (or fork it using an account on github). And if | ||
you want to contribute your changes back, please give me a "pull | ||
request"! | ||
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*Code contributions and/or patches to fix bugs are most welcome!* | ||
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@@ -151,13 +149,13 @@ above is appropriate. Thanks! | |
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### Acknowledgements: | ||
Big thanks go to Steve Eikenberry for his help developing the | ||
algorithms, Dunc Lorimer for the basic code which was used to process | ||
BCPM and WAPP data, David Kaplan for lots of help with the GBT SPIGOT | ||
code, Jason Hessels for many contributions to the Python routines, and | ||
a bunch of other contributions of various kinds from (alphabetical): | ||
Anne Archibald, Cees Bassa, Slavko Bogdanov, Fernando Camilo, Paul | ||
Demorest, Paulo Freire, Chen Karako, Mike Keith, Patrick Lazarus, Maggie | ||
Livingstone, Chitrang Patel, Paul Ray, Paul Scholz, Ingrid Stairs, and | ||
Kevin Stovall for many comments, suggestions and patches! | ||
algorithms, Dunc Lorimer and David Kaplan for help with (retired) code | ||
to process BCPM, SCAMP, and Spigot data, Jason Hessels for many | ||
contributions to the Python routines, and (alphabetical): Bridget | ||
Anderson, Anne Archibald, Cees Bassa, Matteo Bachetti, Slavko | ||
Bogdanov, Fernando Camilo, Paul Demorest, Paulo Freire, Chen Karako, | ||
Mike Keith, Patrick Lazarus, Maggie Livingstone, Chitrang Patel, Paul | ||
Ray, Paul Scholz, Ingrid Stairs, Kevin Stovall, Joeri van Leeuwen for | ||
many comments, suggestions and patches! | ||
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Scott Ransom <[email protected]> |