Astrophysics and Space Science

, Volume 309, Issue 1–4, pp 51–55 | Cite as

Gamma-ray source stacking analysis at low galactic latitudes

  • Analía N. Cillis
  • Olaf Reimer
  • Diego F. Torres
Original Article


We studied the problematic of uncertainties in the diffuse gamma radiation apparent in stacking analysis of EGRET data at low Galactic latitudes. Subsequently, we co-added maps of counts, exposure and diffuse background, and residuals, in varying numbers for different sub-categories of putatively and known source populations (like PSRs). Finally we tested for gamma-ray excess emission in those maps and attempt to quantify the systematic biases in such approach. Such kind of an analysis will help the classification processes of sources and source populations in the GLAST era.


Gamma rays Observations Pulsars Methods: data analysis 


95.85.Pw 98.70.Rz 97.60.Gb 95.75.-z 


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Copyright information

© Springer Science+Business Media B.V. 2007

Authors and Affiliations

  • Analía N. Cillis
    • 1
  • Olaf Reimer
    • 2
  • Diego F. Torres
    • 3
  1. 1.Goddard Space Flight Center/NASAGreenbeltUSA
  2. 2.W.W. Hansen Experimental Physics LaboratoryStanford UniversityStanfordUSA
  3. 3.Institució de Recerca i Estudis Avançats (ICREA) & Institut de Ciències de l’Espai (IEEC-CSIC), Facultat de CienciesUniversitat Autònoma de BarcelonaBarcelonaSpain

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