Aug 27 – 31, 2018
LVH, Luisenstraße 58, 10117 Berlin
Europe/Berlin timezone

Boosting the Annihilation Rate with Ultracompact Minihalos

Aug 28, 2018, 3:45 PM
LVH, Luisenstraße 58, 10117 Berlin

LVH, Luisenstraße 58, 10117 Berlin

<a href="" target="_blank"><b>LANGENBECK VIRCHOW HAUS</b></a> Luisenstraße 58, 10117 Berlin
Board: DM15
Poster (A0 portrait) Dark Matter Poster Session and Coffee Break


Mr Joshua Foster (University of Michigan)


Cosmological inflation generates primordial density perturbations which are scale-free on observable scales but that may be considerably larger on smaller scales. The boosted power spectrum at small scales leads to increased formation of dense, small-scale structure at early times, enhancing the present-day annihilation rate of annihilating dark matter. In this work, we show how to compute the impact of a power spectrum predicted by an inflationary model on WIMP indirect detection, leading to constraints on the WIMP-inflation parameter space within the context of axion inflation and establishing a procedure for similar future inquiries.

Primary author

Mr Joshua Foster (University of Michigan)


Prof. Benjamin Safdi (University of Michigan) Ms Valerie Domcke (DESY)

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