F. Occhionero, L. Amendola, Pier Stefano Corasaniti
{"title":"Primordial Bubbles within Primordial Bubbles","authors":"F. Occhionero, L. Amendola, Pier Stefano Corasaniti","doi":"10.1017/S0074180900216847","DOIUrl":"https://doi.org/10.1017/S0074180900216847","url":null,"abstract":"Two consecutive, distinct episodes of phase transition occurring during inflation may nucleate two generations of bubbles, one inside the other. We design a model of inflation that realizes this sequence and yields bubble spectra that are bimodal and tunable functions of phenomelogical parameters in turn combinations of microphysical parameters. We argue in favor of a tuning of the parameters such that the outer and earlier generation of bubbles becomes hundreds of Mpc/h in diameter (like the local Hubble bubbles of the literature) whereas the inner and later generation becomes tens of Mpc/h in diameter (like the observed large scale voids).","PeriodicalId":403394,"journal":{"name":"Symposium - International Astronomical Union","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117335600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Analysis of the CFA “Great Wall” Using the Minimal Spanning Tree","authors":"S. Bhavsar, D. Lauer","doi":"10.1017/S007418090011054X","DOIUrl":"https://doi.org/10.1017/S007418090011054X","url":null,"abstract":"MST analysis shows the “Great Wall” as a statistically significant linear feature in the galaxy distribution. It is not as long as visual impressions may suggest. Another “Wall” extends radially, perpendicular to the GW. These two walls intersect at the Coma cluster.","PeriodicalId":403394,"journal":{"name":"Symposium - International Astronomical Union","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123546456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}