التفاصيل البيبلوغرافية
| العنوان: |
SEARCH FOR DARK MATTER SATELLITES USING FERMI-LAT. |
| المؤلفون: |
ACKERMANN, M., ALBERT, A., BALDINI, L., BALLET, J., BARBIELLINI, G., BASTIERI, D., BECHTOL, K., BELLAZZINI, R., BLANDFORD, R. D., BLOOM, E. D., BONAMENTE, E., BORGLAND, A. W., BOTTACINI, E., BRANDT, T. J., BREGEON, J., BRIGIDA, M., BRUEL, P., BUEHLER, R., BURNETT, T. H., CALIANDRO, G. A. |
| المصدر: |
Astrophysical Journal; Mar2012, Vol. 747 Issue 2, p1-11, 11p |
| مصطلحات موضوعية: |
DARK matter, GALAXIES, GAMMA rays, WEAKLY interacting massive particles, NATURAL satellites |
| مستخلص: |
Numerical simulations based on the ΛCDM model of cosmology predict a large number of as yet unobserved Galactic dark matter satellites. We report the results of a Large Area Telescope (LAT) search for these satellites via the γ-ray emission expected from the annihilation ofweakly interactingmassive particle (WIMP) darkmatter. Some dark matter satellites are expected to have hard γ-ray spectra, finite angular extents, and a lack of counterparts at other wavelengths. We sought to identify LAT sources with these characteristics, focusing on γ-ray spectra consistent with WIMP annihilation through the b... channel. We found no viable dark matter satellite candidates using one year of data, and we present a framework for interpreting this result in the context of numerical simulations to constrain the velocity-averaged annihilation cross section for a conventional 100GeV WIMP annihilating through the b... channel. [ABSTRACT FROM AUTHOR] |
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