A signicant number of the parameters of a gamma-ray burst (GRB) and its host galaxy are calculated from the afterglow. There are various methods obtaining extinction values for the necessary correction for galactic foreground. These are: galaxy counts, from HI 21 cm surveys, from spectroscopic measurements and colors of nearby Galactic stars, or using extinction maps calculated from infrared surveys towards the GRB. We demonstrate that AKARI Far-Infrared Surveyor sky surface brightness maps are useful uncovering the ne structure of the galactic foreground of GRBs. Galactic cirrus structures of a number of GRBs are calculated with a 2 arcminute resolution, and the results are compared to that of other methods.

ABSTRACT
1. INTRODUCTION
2. ANALYSIS OF THE AKARI FIS ALL SKY SURVEYIMAGES
3. FIR FOREGROUND
    3.1. The foreground galaxy of GRB 060117
    3.2. Structure of the Galactic foreground of GRBs in theHercules Corona Borealis Great Wall
    3.3. Galactic foreground and the hydrogen column densityof the GRB host galaxies
4. CONCLUSIONS
REFERENCES

• L. Viktor Toth(Department of Astronomy, Eotvos University Budapest)
• Yasuo Doi(University of Tokyo)
• Sarolta Zahorecz(Department of Astronomy, Eotvos University Budapest/European Southern Observatory, Garching bei Munchen)
• Marton Agas(Department of Astronomy, Eotvos University Budapest/Konkoly Observatory, Budapest)
• Lajos G. Balazs(Department of Astronomy, Eotvos University Budapest/Konkoly Observatory, Budapest)
• Adrienn Forro(Department of Astronomy, Eotvos University Budapest)
• Istvan I. Racz(Department of Astronomy, Eotvos University Budapest)