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Measurement of halo properties with weak lensing shear and flexion
Xinzhong Er, Ismael Tereno, Shude Mao
We constrain properties of cluster haloes by performing likelihood analysis using lensing shear and flexion data. We test our analysis using two mock cluster haloes: an isothermal…
Charge Exchange X-ray Emission of Nearby Star-forming Galaxies
Jiren Liu, Q. Daniel Wang, Shude Mao
Properties of hot gas outflows from galaxies are generally measured from associated X-ray line emission assuming that it represents atomic transitions in thermally excited hot gas.…
Lensing by a singular isothermal sphere and a black hole
Shude Mao, Hans Witt
Most galaxies host central supermassive black holes. As two galaxies merge, the black holes also merge. The final single black hole may suffer a kick due to asymmetric gravitationa…
Influence of baryons on the orbital structure of dark matter haloes
S. E. Bryan, S. Mao, S. T. Kay +3
We explore the dynamical signatures imprinted by baryons on dark matter haloes during the formation process using the OverWhelmingly Large Simulations (OWLS), a set of state-of-the…
Estimate of halo ellipticity as a function of radius with flexions
Xinzhong Er, Shude Mao, Dandan Xu +1
The cold dark matter theory predicts triaxial dark matter haloes. The radial distribution of halo ellipticity depends on baryonic processes and the nature of dark matter particles…
Rapidly Rotating Lenses: Repeating features in the lightcurves of short period binary microlenses
Matthew T. Penny, Eamonn Kerins, Shude Mao
Microlensing is most sensitive to binary lenses with relatively large orbital separations, and as such, typical binary microlensing events show little or no orbital motion during t…