A new template background estimate for source searching in TeV gamma-ray 
astronomy

Rowell, Gavin

doi:10.1051/0004-6361:20031194

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

A new template background estimate for source searching in TeV gamma-ray astronomy

MPS-Authors

/persons/resource/persons30959

Rowell, Gavin
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Rowell, G. (2003). A new template background estimate for source searching in TeV gamma-ray astronomy. Astronomy & Astrophysics, 410(1), 389-396. doi:10.1051/0004-6361:20031194.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-8E09-9

Abstract

A new method is described that permits quickly and easily, a 2-dimensional search for TeV gamma-ray sources over large fields of view (~6°) with instruments utilising the imaging atmospheric Cerenkov technique. It employs as a background estimate, events normally rejected according to a cosmic-ray background rejection criterion based on image shape, but with reconstructed directions overlapping the source of interest. This so-called template background model is demonstrated using example data taken with the stereoscopic HEGRA System of Cerenkov Telescopes. Discussion includes comparisons with a conventional background estimate and limitations of the model. The template model is well suited to the search for point-like, moderately extended sources and combinations thereof, and compensates well for localised systematic changes in cosmic-ray background response.