Séminaire / Seminar GReCO |
| « Large-scale Clustering of Voids » |
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K. C. Chan |
| Cosmic voids also exhibit clustering properties similar to their halo counterparts. This opens up a channel to extract cosmological information from void clustering. In this talk, I will discuss the clustering of void, especially the void bias, which is the analog of the halo bias. I will demonstrate that accounting for both void biasing and void exclusion, we can model the void power spectrum well. Because of the large size of voids, the exclusion effect is important and it is modeled using the hard sphere model. Besides, I will also show that the hard sphere model can be applied to halo clustering to model the noise in the low-k part of the halo power spectrum. |
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lundi 13 octobre 2014 - 11:00 Salle des séminaires Évry Schatzman Institut d'Astrophysique de Paris |
| Pages web du séminaire / Seminar's webpage |