Title: Primordial Black Holes in Light of LIGO/Virgo Observations
Abstract: Assuming that a fraction of dark matter is in primordial black holes (PBHs), a population of PBH binaries is formed before matter-radiation equality from large Poisson fluctuations in their spatial distribution. In this talk I will show that many of these binaries are disrupted by a nearby PBH or a small cluster of PBHs, yet a large fraction of them survives until they merge. I will present a derivation for a lower bound on the PBH merger rate and show that the LIGO/Virgo observations give the strongest constraint on the abundance of O(10) solar mass PBHs. I will also show that the PBH binaries can be responsible for the LIGO/Virgo events if 0.2% of dark matter is in PBHs with a narrow mass function that peaks at ~20 solar mass.
#BooksofDIAS: Principles of Continuum Mechanics
by Zdeněk Martinec (2019)
This book addresses the basic concepts of continuum mechanics, that is, the classical field theory of deformable bodies.
More: springer.com/gp/book/978303…#DBF2020#DIASdiscovers
#BooksofDIAS: The MacEgan Legal Treatise (2020)
edited by Fergus Kelly
This Treatise is of special importance as it provides a professional lawyer’s account of Irish ‘Brehon’ law in the period after the Anglo-Norman invasion of 1169.
See more: shop.dias.ie/product/the-ma…#DBF2020
DIAS School of Theoretical Physics is hiring!
-Postdoctoral Scholarship in Theoretical Physics
-Schrödinger Fellowship in Theoretical Physics
Application closes on 10 January 2021.
More details and how to apply is on our website: dias.ie/positions/#jobfairy#physics
Job Opportunity!
DIAS is recruiting for a Senior IT Administrator/Systems Administrator. It is an initial 5 year fixed term contract, with the possibility of a permanent appointment.
Closing Date 11 December
linkedin.com/jobs/view/seni…#DIASdiscovers#jobfairy#sysadmin#itadmin
Congratulations to Tom Ray on his appointed as a Senior Professor in Astronomy & Astrophysics at DIAS. Read all about his career and research achievements at https://t.co/aYfGg2vtP6#DIASDiscovers
Welcome to the Research Leaders appointed to DIAS's Council and School Governing Boards. Their individual track records as leaders in their respective fields, will be a great source of insight and inspiration for the wider DIAS community.
▶️ dias.ie/2020/11/23/res…#DIASdiscovers
What a great and inspiring talk!!! Apparently lots of small mars-quakes and very week ambient noise on Mars. Shoutout to the organizers @DIAS_Dublinhttps://t.co/D1SM4QRsjS
..., be appointed Director of the School of Theoretical Physics”, which was seconded by Professor A. J. McConnell and carried unanimously. (4/4)
Read more: dias.ie/2010/09/15/stp…
The 21 November, will mark the 80th Anniversary of the first meeting of the Governing Board of the School of Theoretical Physics. The first item on the agenda was a proposal by the Chairman of the Board, Dr. Conway, “that Professor Erwin Schrödinger,
(3/4)
During the lunch De Valera outlined his plan for an Institute for Advanced Studies embracing a School of Celtic Learning, a School of Theoretical Physics, and a School of Medical Research, with possible additional sections to be added on later. (2/4)
#OTD in 1903 long serving @StpDias Board member Professor Albert Joseph McConnell was born. Coincidently also #OTD in 1938 McConnell attended a luncheon hosted by then Taoiseach Eamon DeValera in @LeinsterHouse with Erwin Schrödinger (1/4)
*picture from 1942
This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may affect your browsing experience.
Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.
Leave a Comment
Last Updated: 23rd November 2020 by Denjoe O'Connor
Ville Vaskonen (King’s College London)
Title: Primordial Black Holes in Light of LIGO/Virgo Observations
Abstract: Assuming that a fraction of dark matter is in primordial black
holes (PBHs), a population of PBH binaries is formed before matter-radiation
equality from large Poisson fluctuations in their spatial distribution. In
this talk I will show that many of these binaries are disrupted by a nearby
PBH or a small cluster of PBHs, yet a large fraction of them survives until
they merge. I will present a derivation for a lower bound on the PBH merger
rate and show that the LIGO/Virgo observations give the strongest constraint
on the abundance of O(10) solar mass PBHs. I will also show that the PBH
binaries can be responsible for the LIGO/Virgo events if 0.2% of dark matter
is in PBHs with a narrow mass function that peaks at ~20 solar mass.
Talk – Video
Talk – Slides
Category: Uncategorised
#BooksofDIAS: Principles of Continuum Mechanics by Zdeněk Martinec (2019) This book addresses the basic concepts of continuum mechanics, that is, the classical field theory of deformable bodies. More: springer.com/gp/book/978303… #DBF2020 #DIASdiscovers
#BooksofDIAS: The MacEgan Legal Treatise (2020) edited by Fergus Kelly This Treatise is of special importance as it provides a professional lawyer’s account of Irish ‘Brehon’ law in the period after the Anglo-Norman invasion of 1169. See more: shop.dias.ie/product/the-ma… #DBF2020
DIAS School of Theoretical Physics is hiring! -Postdoctoral Scholarship in Theoretical Physics -Schrödinger Fellowship in Theoretical Physics Application closes on 10 January 2021. More details and how to apply is on our website: dias.ie/positions/ #jobfairy #physics
DIAS's bookshop is offering some great discounts today. See more on our website: shop.dias.ie #DIASdiscovers #BlackFriday #books #BlackFriday2020
Job Opportunity! DIAS is recruiting for a Senior IT Administrator/Systems Administrator. It is an initial 5 year fixed term contract, with the possibility of a permanent appointment. Closing Date 11 December linkedin.com/jobs/view/seni… #DIASdiscovers #jobfairy #sysadmin #itadmin
Congratulations @TomRayDIAS! A fantastic career to date with more exciting projects on the horizon 👏 twitter.com/DIASAstronomy/…
Welcome to the Research Leaders appointed to DIAS's Council and School Governing Boards. Their individual track records as leaders in their respective fields, will be a great source of insight and inspiration for the wider DIAS community. ▶️ dias.ie/2020/11/23/res… #DIASdiscovers
Glad you enjoyed! twitter.com/krjonsdottir/s…
Tonight! Some tickets still available for @dias_geophysics Statutory public lecture MARSQUAKES! presented by Dr John Clinton of @ETH . Online starting at 16:30pm. #DIASdiscovers eventbrite.ie/e/128258411361
@TurloughDownes @SimonHarrisTD @IrishResearch Congratulations!
..., be appointed Director of the School of Theoretical Physics”, which was seconded by Professor A. J. McConnell and carried unanimously. (4/4) Read more: dias.ie/2010/09/15/stp…
The 21 November, will mark the 80th Anniversary of the first meeting of the Governing Board of the School of Theoretical Physics. The first item on the agenda was a proposal by the Chairman of the Board, Dr. Conway, “that Professor Erwin Schrödinger, (3/4)
During the lunch De Valera outlined his plan for an Institute for Advanced Studies embracing a School of Celtic Learning, a School of Theoretical Physics, and a School of Medical Research, with possible additional sections to be added on later. (2/4)
#OTD in 1903 long serving @StpDias Board member Professor Albert Joseph McConnell was born. Coincidently also #OTD in 1938 McConnell attended a luncheon hosted by then Taoiseach Eamon DeValera in @LeinsterHouse with Erwin Schrödinger (1/4) *picture from 1942