The galactic foreground angular spectra
نویسندگان
چکیده
منابع مشابه
Angular Spectra of Polarized Galactic Foregrounds
It is believed that magnetic field lines are twisted and bend by turbulent motions in the Galaxy. Therefore, both Galactic synchrotron emission and thermal emission from dust reflects statistics of Galactic turbulence. Our simple model of Galactic turbulence, motivated by results of our simulations, predicts that Galactic disk and halo exhibit different angular power spectra. We show that obser...
متن کاملThe angular power spectra of polarized Galactic synchrotron
aDipartimento di Fisica G. Occhialini, Università di Milano, Bicocca bI.N.F.N., Sezione di Milano, Via Celoria 16, I-20133 Milano, Italy cI.Te.S.R.E.-C.N.R., Via P. Gobetti 101, I-40129 Bologna, Italy dDipartimento di Fisica, Università di Firenze, Via S. Marta 3, I-50139 Firenze, Italy eDipartimento di Astronomia, Università di Bologna, Via Ranzani 1, I-40127 Bologna, Italy fDepartment of Phys...
متن کاملThe Galactic Gravitational wave foreground
I present an overview of the Galactic binaries that form the foreground for the ESA/NASA Laser Interferometer Space Antenna (LISA). The currently known population is discussed, as well as current and near-future large-scale surveys that will find new systems. The astrophysics that can be done when the LISA data becomes available is presented, with particular attention to verification binaries, ...
متن کاملPolarization angular spectra of Galactic synchrotron emission on arcminute scales
We study the angular power spectra of the polarized component of the Galactic synchrotron emission in the 28–deg Test Region of the Southern Galactic Plane Survey at 1.4 GHz. These data were obtained by the Australia Telescope Compact Array and allow us to investigate angular power spectra down to arcminute scales. We find that, at this frequency, the polarization spectra for E– and B–modes see...
متن کاملThe power-law behaviours of angular spectra of polarized Galactic synchrotron
We study the angular power spectra of polarized Galactic synchrotron in the range 10 <∼ l ≤ 800, at several frequencies between 0.4 and 2.7 GHz and at several Galactic latitudes up to near the North Galactic Pole. Electricand magnetic-parity polarization spectra are found to have slopes around αE,B = 1.4− 1.5 in the Parkes and Effelsberg Galactic-Plane surveys, but strong local fluctuations of ...
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ژورنال
عنوان ژورنال: Astronomical & Astrophysical Transactions
سال: 1999
ISSN: 1055-6796,1476-3540
DOI: 10.1080/10556799808232095