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From: Anish Ghoshal anishghoshal1@gmail.com Subject: Re: Gravitational Waves with PTA Online Workshop on July 14 Date: 14 July 2023 at 08:51:41 GMT+2 To: Tathagata Ghosh ghoshtatha@gmail.com, Tarak Nath Maity tarak.maity.physics@gmail.com Cc: Terada Takahiro takahiro.terada.hepc@gmail.com, Graham White G.A.White@soton.ac.uk, Debika Chowdhury debika.chowdhury@swansea.ac.uk, juan.urrutia@kbfi.ee, Marek Lewicki marek.lewicki@fuw.edu.pl, Soubhik Kumar soubhik@berkeley.edu

Dear all,

Gentle reminder for today's workshop on Gravitational Waves at PTA.

Zoom link is now available on the website: https://sites.google.com/view/nanograv-epta-workshop-july-23/home https://sites.google.com/view/nanograv-epta-workshop-july-23/home

• • See you all today at 14.00 CEST / 17.30 IST time.

Thanks Anish

On Wed, 12 Jul 2023 at 05:00, Anish Ghoshal <anishghoshal1@gmail.com mailto:anishghoshal1@gmail.com> wrote: Dear all,

In light of the excitement regarding the first evidence of stochastic gravitational background (SGWB) detection in Pulsar Timing Array (PTA) experiments, we are organizing an online workshop on this topics: Ideas on first evidence on Stochastic GW from PTA https://sites.google.com/view/nanograv-epta-workshop-july-23/home https://sites.google.com/view/nanograv-epta-workshop-july-23/home

On July 14 (Friday) we will start at 2 pm CEST/5.30 pm IST with Andrea Mitigate (DESY) introducing PTA and supermassive black hole binary (SMBHB) mergers (~ 1 hour), and then we will pass on to a series of small talks (~ 20m each) about possible cosmological and astrophysical explanations of the detection. Finally we will end with a panel discussion session discussing some of the raised and open questions on the topics.

In particular, we are extremely happy to have Takahiro Terada, Marek Lewicki, Juan Urrutia, Graham White, Debika Chowdhury, and Soubhik Kumar.

Friday, 14th of July

2pm CEST/5.30 pm IST Andrea Mitigate, Nano-Hz gravitational waves in PTA

From 3pm CEST/6.30 pm IST on the same day

1)Takahiro Terada (IBS, Daejeon), The detected Stochastic Gravitational Waves and sub-solar Primordial Black Holes

2. Marek Lewicki (University of Warsaw),

Cosmic Superstrings Revisited in Light of NANOGrav 15-Year Data

3. Juan Urrutia (NICPB, Talinn),

Gravitational Waves from SMBH binaries in Light of the NANOGrav 15-Year Data

4. Graham White (University of Southampton),

Did we hear the sound of the Universe boiling ?

5. Debika Chowdhury (University of Swansea, UK)

Dark Energy, D branes and Pulsar Timing Arrays

6. Soubhik Kumar (UK Berkeley) Gravitational Waves from Stochastic Scalar Fluctuations

7. Panel Discussion

Zoom link will be available on the website on Friday.

You are welcome to participate in the online workshop. Kindly circulate the notification to all who may be interested in joining the workshop online in your institute.

Thanks On behalf of the organizers

Tathagata Ghosh (HRI, India) Anish Ghoshal (University of Warsaw, Poland) Tarak Maity (HRI, India)

-- Dr. Anish Ghoshal Adjunct Researcher Institute of Theoretical Physics University of Warsaw Poland

Profile: https://inspirehep.net/authors/1422123 https://inspirehep.net/authors/1422123 Website: https://sites.google.com/view/joint-seminars-salerno-kolkata/home https://sites.google.com/view/joint-seminars-salerno-kolkata/home