SourceCatalogSNRcat

class gammapy.catalog.SourceCatalogSNRcat(cache=False)

Bases: gammapy.catalog.SourceCatalog

SNRcat supernova remnant catalog.

SNRcat is a census of high-energy observations of Galactic supernova remnants.

This function downloads the following CSV-format tables and adds some useful columns and unit information:

• http://www.physics.umanitoba.ca/snr/SNRcat/SNRdownload.php?table=SNR
• http://www.physics.umanitoba.ca/snr/SNRcat/SNRdownload.php?table=OBS

This only represents a subset of the information available in SNRcat, to get at the rest we would have to scrape their web pages.

• table (Table) – SNR info table
• obs_table (Table) – High-energy observation info table

Each table has a version string containing the download date in the table.meta dictionary.

Attributes Summary

description
name
positions	SkyCoord

Methods Summary

copy()	Copy catalog
info()	Print info string.
row_index(name)	Look up row index of source by name.
select_image_region(image)	Select all source within an image
source_name(index)	Look up source name by row index.

Attributes Documentation

description = 'SNRcat supernova remnant catalog.'

name = 'snrcat'

positions

SkyCoord

Methods Documentation

copy()

Copy catalog

info()

Print info string.

row_index(name)

Look up row index of source by name.

Parameters:

name : str

Source name

Returns:

index : int

Row index of source in table

select_image_region(image)

Select all source within an image

Parameters:

image : SkyImage

Sky image

Returns:

catalog : SourceCatalog

Source catalog selection.

source_name(index)

Look up source name by row index.

Parameters:

index : int

Row index of source in table