00336nas a2200121 4500000000100000000000100001008004100002100001700043700001500060245012300075300000800198490000800206 2010 d1 aT. Johannsen1 aD. Psaltis00aTesting the No-hair Theorem with Observations in the Electromagnetic Spectrum. I. Properties of a Quasi-Kerr Spacetime a1870 v716