2007A&A...466.1219B


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.05CEST09:15:17

2007A&A...466.1219B - Astronomy and Astrophysics, volume 466, 1219-1229 (2007/5-2)

Background modelling in very-high-energy γ-ray astronomy.

BERGE D., FUNK S. and HINTON J.

Abstract (from CDS):

Ground based Cherenkov telescope systems measure astrophysical γ-ray emission against a background of cosmic-ray induced air showers. The subtraction of this background is a major challenge for the extraction of spectra and morphology of γ-ray sources. The unprecedented sensitivity of the new generation of ground based very-high-energy γ-ray experiments such as HESS has lead to the discovery of many previously unknown extended sources. The analysis of such sources requires a range of different background modelling techniques. Here we describe some of the techniques that have been applied to data from the HESS instrument and compare their performance. Each background model is introduced and discussed in terms of suitability for image generation or spectral analysis and possible caveats are mentioned. We show that there is not a single multi-purpose model, different models are appropriate for different tasks. To keep systematic uncertainties under control it is important to apply several models to the same data set and compare the results.

Abstract Copyright:

Journal keyword(s): gamma rays: observations - methods: data analysis

Simbad objects: 6

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Number of rows : 6

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 M 1 SNR 05 34 31.94 +22 00 52.2           ~ 5594 4
2 NAME Vela Jr SN SNR 08 52.0 -46 20           ~ 399 2
3 PSR J1301-6305 Psr 13 01 45.76 -63 05 33.9           ~ 101 2
4 NAME Lupus SN SNR 15 02 22.1 -42 05 49           ~ 1207 1
5 SNR G347.3-00.5 SNR 17 12 27 -39 41.2           ~ 607 1
6 QSO B2155-304 BLL 21 58 52.0651817803 -30 13 32.120657891   13.36 13.09 12.62   ~ 1560 1

    Equat.    Gal    SGal    Ecl

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2020.07.05-09:15:17

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