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The cosmic microwave background bispectrum as a test of the physics of inflation and probe of the astrophysics of the low-redshift universe
Eiichiro Komatsu, David N. Spergel
Why is non-Gaussianity interesting? One of generic predictions from inflationary scenarios is that primordial fluctuations are exactly Gaussian in linear order; however, the non-li…
CMB anisotropy from spatial correlations of clusters of galaxies
Eiichiro Komatsu, Tetsu Kitayama, Alexandre Refregier +2
The SZ effect from clusters of galaxies is a dominant source of secondary CMB anisotropy in the low-redshift universe. We present analytic predictions for the CMB power spectrum fr…
The Coalescence Rate of Double Neutron Star Systems
V. Kalogera, R. Narayan, D. N. Spergel +1
We estimate the coalescence rate of close binaries with two neutron stars (NS) and discuss the prospects for the detection of NS-NS inspiral events by ground-based gravitational-wa…
Gravitational Lens Statistics for Generalized NFW Profiles: Parameter Degeneracy and Implications for Self-Interacting Cold Dark Matter
J. S. B. Wyithe, E. L. Turner, D. N. Spergel
Strong lensing is a powerful probe of the distribution of matter in the cores of clusters of galaxies. Recent studies suggest that the cold dark matter model predicts cores that ar…
Self-Interacting Dark Matter
Benjamin D. Wandelt, Romeel Dave, Glennys R. Farrar +3
Spergel and Steinhardt have recently proposed the concept of dark matter with strong self-interactions as a means to address numerous discrepancies between observations of dark mat…
Halo Properties in Cosmological Simulations of Self-Interacting Cold Dark Matter
Romeel Davé, David N. Spergel, Paul J. Steinhardt +1
We present a comparison of halo properties in cosmological simulations of collisionless cold dark matter (CDM) and self-interacting dark matter (SIDM) for a range of dark matter cr…