High-Latitude Galactic Dust Emission in the BOOMERANG Maps

S. Masi, P. A. R. Ade, J. J. Bock, A. Boscaleri, B. P. Crill, P. de Bernardis, M. Giacometti, E. Hivon, V. V. Hristov, A. E. Lange, P. D. Mauskopf, T. Montroy (+5 others)
2001 Astrophysical Journal  
We present mm-wave observations obtained by the BOOMERanG experiment of Galactic emission at intermediate and high (b < -20 deg) Galactic latitudes. We find that this emission is well correlated with extrapolation of the IRAS-DIRBE maps, and is spectrally consistent with thermal emission from interstellar dust (ISD). The ISD brightness in the 410 GHz map has an angular power spectrum c_l = A l^-beta with 2 < beta < 3. At 150 GHz and at multipoles ell ∼ 200 the angular power spectrum of the
more » ... correlated dust signal is estimated to be l(l+1)c_l/2 pi = (3.7 ± 2.9) uK^2. This is negligible with respect to the CMB signal measured by the same experiment l(l+1)c_l/2 pi = (4700 ± 540) uK^2. For the uncorrelated dust signal we set an upper limit to the contribution to the CMB power at 150GHz and l ∼ 200 of l(l+1)c_l/2 pi < 3 uK^2 at 95
doi:10.1086/320679 fatcat:pup77nv2xzaefhobzew7wl2oha