Zoom Link

IPMU Astro Day�2023 November 8 , Wed. 10:00-12:00, Lecture Hall

Self-introduction

(1 slide/person, please include your name, a photo, �info about your work and personal interest)

+LiteBIRD and LSST

Khee-Gan (K.G.) Lee

Office: A57 (5th floor)

​

Scientific Research:

• IGM tomography of z~2-3 Cosmic Web
• Galaxy Protoclusters, Large-Scale Structure in general
• Subaru PFS (Galaxy evolution co-chair)
• Probing Missing Baryons with FRBs (FLIMFLAM Survey on AAT)

​

Non-Scientific Research:

• Road cycling
• Sumo (watching only!)
• Nice restaurants + bars
• Video games

Credit: D. Kashino

Cartoon of Subaru PFS GE Survey

Jia Liu (A37, 4F)

liuxx479.github.io/

jia.liu@ipmu.jp�

2011 Columbia (PhD)

2016 Princeton (Postdoc)

2019 Berkeley (Postdoc)

2021 IPMU (Faculty)

Science:

Topics: see the top-right rainbow

Welcome to collaborate and/or co-advise students with me

“Cosmology x ML” group meeting: Wed 11am-12pm (🙏🏻Joaquin)

CD3 Hack Fridays: code, experiment, connect!

Rooftop telescope (8 inch) observations (🙏🏻 Hideki & Boris)

Life:

IPMU-social slack channel #kids (a new nursing room on 4F!)

IPMU choir: therapeutic & free (expect an email from Rieko)

Plus: Rock climbing (peak 5.12a, now 5.10d…), dance, �skiing (converted from snowboard), swimming (only in pool), electronic music (trip-hop, downtempo, dubstep)…

Tomotake Matsumura/松村知岳(3F/A09)

• Faculty at Kavli IPMU, working on CMB experiments, mostly LiteBIRD, but also Simons Observatory, POLARBEAR and more.

​

• Univ. of Minnesota, Twin Cities (PhD) -> Caltech -> KEK -> JAXA -> now IPMU

​

• In the past and now, I've involved in the following CMB experiments: MAXIMA/MAXIPOL/EBEX/Planck/BICEP/PB/LiteBIRD/SO/PILOT/PICO

​

• I like to …
• bridge among science, analysis, and instrumentation
• play soccer (at least I used to)
• play music (at least I used to play the bass guitar, and now more on piano
• travel to various places (pretty much all as a part of the work trip) but including Atacama Chile, South Pole...
• drinks with you!

Sorry I'm in the telecon behind this time slot, and so I won't be able to make it...

I signed up for a full marathon happening at the end of this month in Tsukuba. I had a perfect plan to prepare for it, but ...

Takumi Tanaka (Room 313 @ back building)

• M1 graduate student in John’s group�U.Tokyo (undergrad in Shimasaku-san’s group)�
• Science: Galaxy evolution
• Evolution of SMBHs and their host galaxies.�Using 2D decomposition analysis on JWST (COSMOS-Web) data!�To be submitted this month…?
• Search for rejuvenation galaxy (just accepted!! ↓)
• ML on HSC imaging data�
• Hobbies
• Cycling and watching bicycle race!
• Skiing
• Watching stars, geological spots
• Cheap shark movies

Sorry I won't be there due to another conference..

Akira Tokiwa (D2 student)

Supervisor: Masahiro Takada, (Technically Jia Liu)

Research Interest:

• Milkyway Archaeology
• Computational astrophysics
• Machine learning

Hobbies:

• Classical Guitar
• Game, anime, cosplay

Dongdong Zhang

• Visiting student from University of Science and Technology of China;
• Third year Ph.D student (2021-today) supervised by Yi-Fu Cai (USTC) and Elisa Ferreira (IPMU).

​

Research interests

• Particle cosmology
• Inflation
• Primordial gravitational waves
• Primordial black holes
• Axion
• Dark sector
• CMB Science
• CMB primordial B-modes
• Cosmic birefringence
• CMB spectral distortions

Toshiya Namikawa

• Research Interests: Observational Cosmology

• Working for several international CMB collaborations

Leading lensing-related analysis groups for SO and LiteBIRD

Project Assistant Professor, A42, Arrived in Aug 2021�(Kyoto -> Tokyo (PhD student) -> Kyoto -> Stanford -> Taiwan -> Cambridge -> now)

Mostly interested in CMB data analysis for gravitational lensing, cosmic birefringence, reionization, SZ, and gravitational-wave standard sirens

Masahiro Takada 高田昌広 (A06, 3F)

• Fukushima ⇒ PhD at Tohoku U. (Sendai) ⇒ UPenn (2001) �⇒ Tohoku U. (2004) ⇒ Kavli IPMU (2008-)
• Subaru HSC & PFS, and then LSST & Roman
• Currently, the S8-tension is the most important problem for me. We should figure out if it is true or not!
• Main interests: dark matter (inc. PBH), dark energy, neutrino mass, and PNG, using observables of weak lensing, �galaxy clustering, RSD, IA (PS, Bisp, …)
• Want to make the parameter �inference MUCH faster (HMC)
• Non-science: family, drinking, travel, …

before

after (at Kyoto)

me

HSC Year 3 results

Clément (紅令門) Leloup (レル)

• IPMU Postdoc since November 2022
• Research interests:
• CMB science (mostly data analysis)
• Inflation
• Modified Gravity�
• Personal interests:
• Cooking
• Climbing
• Japanese

Xuheng Ding (丁旭恒) (Postdoc, A48)

Research interests: Galaxy evolution, high-z quasars. �The SMBH growth with host galaxy evolution using HST, and JWST.

​

After work:

• Music

Guitar

Keyboard

• Other activities

Video Games, Tennis, Camping

​

Evolution history of Xuheng:

Ph.D. @BNU → Postdoc @UCLA → @IPMU

After 2024 Jan, moving to Wuhan University as a faculty

Masafusa, John and I, we discovered the first z>6 QSO host stellar light using JWST:

Pet in Japan

Name: Venti�3.5 years old

Benjamin Zhang: visiting PhD student, University of Southern California

Work

• At USC, w/ Kris Pardo: gravitational wave detection with stellar astrometry
• Holding a lunch talk next Tuesday about this!
• Here (until Dec), with KG: galaxy-Lyman alpha forest cross-correlation

Hobbies

• Going to concerts (indie music in the US, anime here)
• Hiking
• Reading too much science fiction

Ryo Terasawa (D1 PhD student)

Nagano => Tokyo (undergrad, UTokyo) => Kashiwa (IPMU)

Supervisor : Masahiro Takada

Research interests: Cosmology

• HSC cosmic shear analysis (S8 tension, Baryon, etc)
• Primordial non-Gaussianity w/ LSS
• Previous works:�-- Spatial curvature �-- Super sample covariance (SSC)

Member of HSC, PFS, LSST

Hobbies

Movies, Sitcoms (Now: The Big Bang Theory)

​

Tom Melia (faculty) theoretical particle physics

undergrad/phd oxford 2012 -> CERN fellow -> UC berkeley -> IPMU 2017

• What are the fundamental laws of the universe?
• What is the nature of the dark components of the universe?

I try to answer these questions at intersection of pheno and more mathematical QFT

Recently, I’ve been exploring some ‘loopholes’ in gauge theories: in GR this leads to a ‘shadow matter’ background (which looks an awful lot like dark matter)

I like

Composing/playing music of various types

Sewing

Surfing (badly)

Drawing

Hiking

Going out

Jingjing Shi (史晶晶) - A25, 4F

Henan (河南), China -> USTC, Hefei -> SISSA, Trieste -> KIAA, Peking -> IPMU

• Project assistant professor
• Research: Large-scale structure cosmology (systematics, modeling accuracy, novel statistics and probes); galaxy evolution (cosmological simulations - IllustrisTNG, EAGLE, SAM, etc.); Machine Learning; Subaru PFS & HSC
• Hobbies: Hiking, Cycling, Ramen, Delicious stuff, Zelda

PFS & HSC

Vicharit Yingcharoenrat – Postdoc

Postdoc: arrived in Nov 2021, Office:A16

​

PhD (2017-2021): SISSA, Trieste, Italy

​

Research interests:

• Modified Gravity —

Dark energy/Black hole/GWs

• Early Universe — Inflation/Primordial magnetogenesis/Bubble nucleation

​

Other interests:

• Guitar
• Series/Movies/Anime
• Ping-pong
• Travels + food

Sorry for missing Astro day

Andrew Eberhardt - postdoc since Aug 2023, office A10

Research

• Ultra light dark matter
• Quantum simulations
• Simulation methods

Interests

• Backpacking/ hiking/ climbing
• Billiards
• movies/ video games/ sci-fi/ other nerd things

Angela Chen (A62) – Postdoc since 2021/11

Research:

Galaxy survey data analysis

Beyond LCDM model

Tensions

QFTCS

Quantum aspect of gravity

Interests:

Music (singing)

Games

Badminton

Cat rubbing

Masafusa Onoue 尾上匡房 (PD, room A07)

NAOJ (PhD) -> MPIA -> KIAA -> IPMU (from Nov 2023)

Research interest: early growth of supermassive black holes and host galaxies

Tool: JWST, Subaru + other 8m-class telescopes

Hobbies: ski, cooking, On-sen

​

z>6 MBH vs Lbol

Faint z>5 AGN discovery with JWST

Matthew Thorne (PhD Visiting from UK for 1 Year )

Hobbies:

Historical Reenactment

Homebrewing (Ale ,wine, mead, cider)

Hiking/Fresh water swimming

Baking

Pottery

Football

​

​

​

Lancaster University

Selection effects in the BH - stellar mass relation.

Secular SMBH growth.

​

IPMU

Visiting John Silvermans Group

Host galaxy decomposition for AGN at z<0.35 in HSC

Tian Qiu (邱天 A32, 4F)

PhD@UTokyo, IPMU=> PD@IPMU

Research:

• Proper motion of stars
• White dwarfs (luminosity function)
• Galaxy structure

(streams, dwarf galaxies)

• Machine learning

Hobbies:

• Hiking/Cycling/Skiing
• Photography
• Looking for nice food

and cooking

ANAMARIA HELL

PROJECT RESEARCHER ( 23. 10. )

​

RESEARCH INTERESTS:

-MASSIVE GAUGE THEORIES

-MODIFIED THEORIES OF GRAVITY

→The ghosts and the strong coupling

-DARK ENERGY, DARK MATTER

​

​

​

-PhD at LMU MUNICH

​

Scott Hagen

• Visitor (until new year) - John Silvermans group
• PhD Student at Durham (UK)

Research Interests:

• High (ish) energy astrophysics
• Accretion onto compact objects
• Mostly black holes
• Modelling the emission properties (spectra) and temporal properties (variability)

Non-Research Interests

• Skiing, Snowboarding, anything related to snow…
• Rock and Ice climbing
• Hiking, general outdoors stuff

Tomoko Suzuki / 鈴木智子 (Postdoc, A18)

• PhD at NAOJ → … → Kavli IPMU (Oct 2021-)
• Research interests
• Galaxy formation around Cosmic Noon

Dust/Gas content in galaxies with ALMA

Stellar structures with JWST

• Catalog construction for PFS-SSP GE survey
• in charge of Nespresso machines

z ~ 1.5 star-forming galaxies

(Postdoc, A17)

Shintaro Nakano (M1)

• 1st year grad student at Masahiro’s group

• Saitama > Tokyo Tech (undergrad) > IPMU

​

• Research:

• Working on Fiber assignment

and tiling strategy for Subaru PFS

• Also interested in PNG and LSS

​

• Hobbies:

• Music (listen & make; EDM, trance, House, …)
• Game (NieR, Fortnite, DARK SOULS , …)
• 3DCG

My interests

Boris Kalita

My question: Why do galaxies look the way they do?

​

My tools: Multi-wavelength observations and coffee

​

My journey so far: Pune ➡️ Hawaii ➡️ Paris ➡️ Tokyo

​

Zhaoxuan Liu (M2 Student @ Room 313, R.C.2)

Research with John:

Star formation and galaxy evolution

->starburst galaxies around Cosmic Noon

​

Tools:

JWST+ALMA

​

Hobbies:

Bouldering

CDs and Vinyls

Concerts

Coffee

That’s me

Qinyue Fei （费勤月）

room@313 complex

qyfei@pku.edu.cn

PhD student@KIAA/PKU since 2019

Visiting IPMU supervised by Prof. John Silverman until 2024.09

Research interests:

SMBH — galaxy coevolution, galaxy dynamics, gas kinematics

Work: Mainly focus on Gas kinematics in quasar host galaxies

​

Other interests:

Badminton, Poker, Video games

Camila Novaes

Visitor (until April/2024) - Room B03

Research experience/interests:

• CMB: temperature + polarization (learning)
• primordial non-gaussianity,
• anomalies, …
• LSS:
• Cosmological principle,
• BAO (galaxies, 21 cm IM),
• 21 cm cosmology,
• …
• Application of machine learning tools.

Other interests:

• Muay Thai,
• Running (trying),
• Movies,
• Visiting different bakeries with my husband,
• …

​

[camilapnovaes@gmail.com]

• PhD (2015) @ INPE (on CMB topics)
• Postdoc @ ON (2015-2019) >> USP (2019) >> INPE (2020 - now)

Xinpeng Wang (王欣芃)

D2 (Actually Grad 2) @Tongji U (Ying-li Zhang)

Visitor and Student^2 of Misao Sasaki @IPMU

Interested in:

I.Theoretical Cosmology, basically

Inflation/Primordial Perturbations

PBH/GW(Primordial source)

II.Photography(Electronic & Film)/

Art/Travel & Walk/Puppy/Karaoke/Cook(bad)/N.Switch.

III.Drinking Coffee during the day and Alcohol at night.

​

​

オウ　キンホウ

Working @Complex 2 room 314

Email: xinpengwang@tongji.edu.cn

​

Hi, I’m Wonderful

Bruna Araujo

(Room 313 at Research Complex Building)

​

Research Student at John Silverman’s group

​

Bachelor in Physics (Brazil, 2022)

​

Research Interests:

• Galaxy interactions and its role in nuclear activity
• Galaxy evolution and co-evolution with SMBHs

​

Personal Interests:

• Music (k-pop, Coldplay)
• Crochet
• Anime, k-dramas
• Cats

​

Lina

Coldplay concert in 2017

Coldplay concert yesterday

Yue Nan (南 岳 = Southern Mountain)

​

​

yue.nan@ipmu.jp (PostDoc)�

Research Interests �(Observational Cosmology)��●Primordial non-gaussianity with MT, RT

●LSST（super-sample covariance) with MT, RT

​

●Phenomenology of dark energy inhomogeneity �●Large-scale anomalies (e.g., dipole) w/ cosmological principle

Hobbies��Ball games: Basketball, Soccer, Baseball, …�Outdoors: Hiking/Mountaineering, Nature obs., Running, ...�Others: Trains, Shrines, Movies, (Historical) Strategy Games,...

Eddington Number: 32→33 (e-index for workouts)

Dipole: Heading east, never west: 不西

c.f. 不東: Heading west, never east, until you reach the Scriptures.�奈良薬師寺　玄奘三蔵院伽藍 Nara Yakushij Temple� Genjo Sanzoin Complex (yakushiji.or.jp)）

​

(Yichang, Wuhan, Hefei (USTC), Hiroshima, Tokyo)

Ukraine (~2014)-> Germany(Munich, 2014-2019) -> Japan(2019~)

Joined IPMU in December 2022

Vovk Kateryna,

Project Researcher, A08

Research interest:

Galaxies evolution,

Co-evolution of AGNs and their host galaxies

I like

- Studying new things

- Having fun with my family, friends

- All sorts of handcrafting

- Playing with LEGO

…

Kanmi Nose

(M2 student)

・My hometown:

Kitakyushu City　→　Kagoshima

・Research theme:

Galaxy Clustering

・Interest:

Gravitational wave, Neutrino, Bispectrum

・Hobby:

Guitar, Manga, Anime (detective conan,

one piece, ...)

​

Baptiste Jost (Post-doc, room A47 5F)

Joined IPMU in February (before that: PhD at APC in Paris)

Research interests:

• CMB polarization (SO, LiteBIRD)
• Cosmic birefringence
• Galactic foreground cleaning

Personal interests / hobbies:

• Hiking, Biking, Skiing…
• Cooking
• Music (flute)
• Video games and movies
• Theatre
• Always in for a beer with friends!

Jess Cowell

​

Oxford x IPMU Phd Student, David Alonso & Jia Liu

​

• Undergrad: Warwick + year abroad at UTokyo -> Masters: Cambridge -> PhD: Oxford/IPMU
• Working on Marked Power spectra and other non-gaussian statistics to extract information from LSS
• Interested in general cosmology, always want to learn more!

​

​

• Likes: imokenpi, kendo, ghibli, going to the pub
• Dislikes: aubergines, natto, Brexit, kanji

​

Hobbies

Tea ceremony (茶道）

Kendo

Felting

Kota Hayashi

Masahiro’s student (M2)

UTokyo (undergrad) > IPMU

​

Research

Subaru PFS (data reduction pipeline)

… 2D PSF modeling

​

Hobbies

Sports, movies, music, wine & whisky, etc…

​

Ryosuke Akizawa

Master’s course at the Univ. of Tokyo,

Matsumura lab. (Kavli IPMU CMB group) M1

Hardware development for LiteBIRD

Hobbies

(Long distance)cycling

Anime

Benjamin Horowitz

Lawrence Berkeley National Lab -> IPMU (January 2024)

Main current interests:

• Dynamical forward modelling for cosmology and galaxy evolution
• Lyman Alpha forest tomography
• Galaxy - LSS relation (i.e. PFS-Galaxy Evolution LSS WG)
• Connecting hydrodynamical simulations to observations w/ ML (galaxies or gas physics)

Slice from CLAMATO Survey

Reconstruction from HyPhy

Other interests:

Rock/ice/plastic climbing, road cycling, skiing, eating

(Time conflict, might need to leave before slide)

Kota Hayashi

Masahiro’s student (M2)

UTokyo (undergrad) > IPMU

​

Research

Subaru PFS (data reduction pipeline)

… 2D PSF modeling

​

Other interests

Sports, movies, music, wine & whisky, etc…

​

Kosuke Aizawa

Research focus: Hardware development for LiteBIRD, Simons Observatory

• Manufacturing alumina half-wave plate by laser beam

​

Interests:

• Books (Capote)
• Sports
• Fruits

1st grade Master at UTokyo, Kavli IPMU ← Hokkaido Uni. (Under grad)

Carlo Baccigalupi

Radek Stompor (CPB, CNRS/UCB)

We are visiting now at IPMU!

Data analysis and scientific interpretation of the cosmic microwave background data sets.

•New statistical and numerical algorithms;

•High performance computing software and tools;

•Robust performance forecasting (including systematic and statistical errors due to instrumental, environmental and astrophysical effects) and reliable scientific optimization of future instruments;

•Preparations and analysis of actual data sets (Simons Array, Simons Observatory, CMB-S4 and LiteBIRD).

​

Orientation to the astro group

Astro group website: http://ipmuastro.wikidot.com/

(password: kashiwanoha; pls do not share)

​

​

Doing research at IPMU (Elisa)

• Mentorship
• Postdoc meetings (spring)
• Job season (help group, practice job talks)
• Give talks and attend workshops
• Regular ASJ and JPS meetings
• 3PM tea time
• Travels
• Hosting visitors
• Group meetings and mailing lists:
• John’s Galaxy meetings
• Misao’s early universe JC (Wed 1-3pm)
• Jia’s cosmology x ML group meeting (Wed 11am-12pm)
• KG’s group meeting (alternate Fridays 10-11am)
• Dark matter meeting
• CMB group meeting (Thur. 10-11am, Seminar room A, ask Tomo to join mailing list)
• PFS cosmology fiber assignment/survey simulation meeting (Wed or Thu, ask Masahiro or Jingjing)
• Astro group website: http://ipmuastro.wikidot.com/ (password: kashiwanoha; pls do not share)

Astro Journal Club (Joaquin, Hideki)

• Astro JC happens at 11 am every Friday for 1 hour with a hybrid format in Seminar Room A and on Zoom
• Two volunteers will be assigned to present papers for each week JC
• Remember to put the paper you want to discuss and your name as discussion leader on Benty-fields
• Present paper up to 15 mins, just main idea and figures
• After two speakers, we go over Benty-fields to discuss more papers
• Volunteers schedule list and in person sign-in form: form
• Remember to vote for papers on Benty-fields
• Astro group website: http://ipmuastro.wikidot.com/

​

​

Seminars & Colloquia (Yue, Boris, Kaloian, KG, Misao)

Astro seminars: A 45-minute talk (→ 20-min talk(×2) from 11/29), covering wide interest of Astro people

• Generally, from 11:00am~ Tues (Seminar Room A when on-site)
• Speakers are generally early career scientists
• Welcome speaker recommendation (Contact the organizers)
• Might be ‘taken over’ by APEC seminar if necessary
• Schedule: http://ipmuastro.wikidot.com/main:seminars

APEC seminars (KG)

• Generally, 1:30pm on Thursday (Seminar Room A) for Astro/Cosmo slot (there are also separate HEP-theory + exp APEC Seminar)
• Budget available to cover local expenses (train + accommodation + per diem) and occasionally air fare
• Can be for all career stages, but all-expenses-covered only for someone of interest to multiple faculty
• KG is scheduler. Schedule: https://docs.google.com/spreadsheets/d/1LsDwI2tXPaxjZE_c6LA6yj0WxIBEzI4btqqa5ox19e4/edit?usp=sharing

IPMU colloq

• ~1x per month
• Usually by leaders of their field who can give a broad talk of interest to the whole IPMU
• Selected by committee of senior IPMU faculty; but please make suggestions to faculty members

Galaxy survey projects (Masahiro)

What are they and how to join? Please visit our wiki http://ipmuastro.wikidot.com/main:research (make registration: join the wiki, mailing lists, etc if you are interested in)

• HSC: all data taken. The proprietary reduced data and catalog for HSC-Y3 (~500 sq. deg. for full-color data) are via the database, and the data reduction of the full dataset will happen soon. (ask Masahiro, John, …) – we have the full data right
• PFS: the survey will start in 2024. Three pillars: Cosmology, Galaxy Evolution, Galactic Archaeology. (ask Masahiro, John, KG, …) – we have the full data right
• RO LSST (2025): IPMU secured ~5 PI’s at least. Each PI can bring up to 4 junior colleagues. Yasuda-san is a contact point at Kavli IPMU for LSST
• Euclid (2023-): Jia(?) and Masahiro have PI rights. Again up to 4 junior colleagues per PI
• Roman (2027?): Subaru community members can join, via Roman-Subaru collaboration. Masahiro and Jia are members of Roman HLIS (High-latitude Imaging Survey) PIT (Project Infrastructure Team, but no money!); ask Masahiro and/or Jia
• SO, CMB-S4, LiteBIRD: ask Tomo and Jia

Telescope Observations (John)

Obtaining time on telescopes and galaxy group activities

Large surveys

Subaru Strategic Program; Prime-Focus Spectrograph

COSMOS-Web (large JWST program)

Mauna Kea Telescopes: Subaru, Keck, Gemini

Atacama Large (sub)millimeter Array

COSMOS-Web

CD3 Center for Data-Driven Discovery (Jia)

• Mission: decode the universe (with data/AI/ML)
• Projects: IPMU-led astrophysical projects (HSC, PFS, LiteBIRD, etc.), particle experiments, social science…any project with data.
• Techniques: AI/ML, data analysis, data mining, algorithms, simulations, high performance computing, and more.
• Globus is now installed on the IPMU cluster (ask IT for an account), thanks to Hideki & the IT team.
• Events
• Hack Fridays (1:30-4pm), organized by Jingjing, Cesar, Boris, Katya (new addition: 10 min crash course on recent AI/ML tools)
• Joint CD3 x astro/cmb/math/pheno.. seminars (TBA)
• Mini-workshop on time-domain cosmology (chair: Masahiro): December 7-8, 2023
• CD3 x Simons Foundation workshop: AI4(astro)physics, Jan 22-26, 2024
• Baryons in the Universe 2024 (chair: KG), Apr 8-12, 2024
• Getting involved in CD3
• Sign up on https://cd3.ipmu.jp/ or contact Katya
• Opportunities:
• Stay up to date with AI/ML with peers
• Write better/cleaner codes
• Data/AI/ML workshops/seminars, funding for travel/visitors
• Connection to ML/data science experts within/outside of IPMU
• Potential transition to non-academic career
• Expected commitments:
• Initiate/continue interdisciplinary data-driven project(s)
• Participate in center activities
• Publish under CD3 affiliation
• Help shape CD3 to be a fun & productive place!

CD3 Team

• New faculty members (welcome!)
• Jingjing Shi (Oct 2023): Weak lensing, LSS, Intrinsic Alignment, ML application to data
• Linda Blot (Dec 2023, now MPA): Clustering dark energy, Cosmological simulations
• Leander Thiele (March 2024, now Princeton): LSS, CMB, Voids, ML
• And you, and let’s work together!

Jingjing Shi

Linda Blot

Leander Thiele

CMB experiments (Tomo)

IPMU is one of the major lead institutions in LiteBIRD and Simons Observatory(SO). We are also discussing how to participate to CMB-S4 not individual basis but more coordinated way. Here is the team: https://sites.google.com/view/ipmucmb/home-jp

We meet Thursday 10am to catch up, CMB related arXiv paper and research progress, every week.

​

For LiteBIRD, IPMU is planning to be in charge of

• hardware
• science output by data analysis

​

LiteBIRD's focus is inflation, and yet there are many more things one can do with the data, e.g.

​

• Constraining SU(2) gauge field inflation
• Implications of B-mode polarization measurements for Cosmic Inflation
• Mapping the Hot Gas in the Universe
• Cross-correlation science with CMB and other large-scale structure probes
• Primordial Magnetic Fields
• Gravitational Lensing: B-mode delensing, Toshiya Namikawa
• Gravitational Lensing: LiteBIRD Lensing Reconstruction, Toshiya Namikawa
• Studies of Anomalies
• Optical Depth, Reionization of the Universe and Neutrino Masses
• Cosmic Birefringence

​

if you are interested in any of these, please let us know.

​

Sorry I'm in the telecon behind this time slot, and so I won't be able to make it...

For SO, we contributes also in hardware a bit but planning to mostly focus on data analysis. SO is now start taking the data in the commissioning phase! The nominal obs. will start soon!

SO SAT

SO SAT forebaffle from IPMU

Upcoming Astro/Cosmo conferences at IPMU

• “AI-driven discovery in Physics & Astrophysics”
• 2024 Jan 22-26
• CD3 x Simons joint workshop
• https://cd3.ipmu.jp/ai4phys/ (Registration closes 2023 Nov 30)

​

• “Baryons in the Universe 2024”
• 2024 April 8-12
• Theory x observational probes (X-ray, SZ, FRBs, QSO absorption)
• https://indico.ipmu.jp/e/baryons2024 (Registration closes 2024 Jan 14)

Life at IPMU (KG)

IPMU-Social: Unofficial Slack channel for social activities at IPMU (no records)

https://join.slack.com/t/ipmusocial/shared_invite/zt-26l91zm1x-t6Mkeh6i8ot7Kv2O468cJw

Quiet spaces:

• 2nd floor library
• 3rd floor ‘phone booth’ for telecons/interviews etc. (“Balconies” and meeting rooms are for in-person discussions)

Rooftop telescope observation (Hideki & Boris; other volunteers?)

Resources for family (IPMU-Social Slack #kids)

Info on events in Tokyo etc: Time Out Tokyo, Metropolis Japan

Townhall (aka Q&A)

Town hall (all faculty)

Previous discussion (from last year): https://docs.google.com/document/d/1tTkCeVGjwnMMH_QJWjlqSGqPCmwpw6Rp1ZGRv3GbxGA/edit#

Questions or Points to raise (please fill in):

• Jingjing: should we think moving the lunch talk to 12pm - 1pm? plp are welcomed to have lunch while listening the talks. In this case, even if we go beyond 1pm for 10 to 20 mins for discussion, it should be fine.