Events this week

Monday, October 20

Theoretical Astrophysics Seminars
Location: UCB – Hearst Field Annex B5, 12:10 p.m.
Speaker: Matteo Cantiello (KITP)
Title: “The Physics of Stellar Angular Momentum Transport”

Special INPA Seminar
Location: LBNL – INPA Common Room (50-5026), 12:00 p.m.
Speaker:  Joulien Tatar (U. of Washington & UC-Irvine)
Title:  “Toward Completion of the Hexagonal Prototype Antarctic Ross Ice-shelf ANtenna Neutrino Array (ARIANNA)
Abstract: ARIANNA aims to push the boundaries of extremely high energy neutrino physics, by achieving at least an orders of magnitude better sensitivity to extragalactic neutrinos with energies between 10^17 and 10^20 eV relative to any other experiment to date.
ARIANNA is a surface array detector. The full array will span ~1300 km^2 of the vast Ross Ice Shelf (RIS), and have a ~0.7 teraton fiducial volume. ARIANNA uses a unique method to monitor such a vast area. It listens for sub-nanosecond radio frequency pulses, reflected off the water-ice interface at the bottom of the RIS, which reach the surface. The viability of the detection technique has been confirmed.
The experiment is currently in its R&D stage with the goal of successfully running seven stations in a hexagonal array configuration. Three second generation stations have been deployed and operated during the 2013-2014 season, collecting excellent quality data that are indicative of the performance and capability of a full array. The final four stations will be deployed in a few months, completing the demonstration phase of the experiment.

4D Seminars
Location: UCB – 402 Old Le Conte, 2:30 p.m.
Speaker: Yue Zhao (Stanford)
Title: “Explicitly Broken Supersymmetry with Exactly Massless Moduli”

RAL seminar
Location: UCB,  Hearst Field Annex B1, 3:10 p.m.
Speaker: Tabitha Voytek (Carnegie Mellon University)
Title: Hydrogen and the First Stars: First Results from the SCI-HI 21-cm all-sky spectrum experiment
Abstract: I will be introducing the 
Sonda Cosmologica de las Islas para la Deteccion de Hidrogeno Neutro” (SCI-HI) experiment. This experiment is an all-sky 21-cm brightness temperature spectrum experiment studying the cosmic dawn (z~15-35) through the temporal evolution of the IGM. The experiment is a collaboration between Carnegie Mellon University (CMU) and Instituto Nacional de Astrofísica, Óptica y Electrónica (INAOE) in Mexico. Initial deployment of the SCI-HI experiment occurred in June 2013 on Guadalupe; a small island about 250 km off of the Pacific coast of Baja California in Mexico. I will discuss the preliminary measurements from this deployment, placing first constraints on the 21-cm all-sky spectrum around 70 MHz (z~20), see Voytek et al (2014). I will also discuss the current work to improve the experiment; including both instrumental improvements and deployment locations.

Physics Department Colloquium
Location: UCB, 1 Le Conte Hall – 4:15 p.m.
Speaker: Eddie Farhi (MIT)
Title: “Physics Based Approaches to Quantum Computing”

Tuesday, October 21

Berkeley Cosmology Seminars
Location: UCB – Hearst Field Annex B1, 1:10 p.m. (also videoconferenced to LBNL 50-5026)
Speaker: Josh Dillon, MIT
Title: “Chasing the Cosmic Dawn with 21 cm Tomography”
Abstract: Realizing the promise of 21 cm cosmology to provide an exquisite probe of astrophysics and cosmology during the cosmic dark ages and the epoch of reionization has proven extremely challenging. We’re looking for a small signal buried under foregrounds orders of magnitude stronger. We know that we’re going to need very sensitive, and thus very large, low frequency interferometers, which present their own set of difficulties. And, as I will explain, we’re going to need a rigorous statistical analysis of the maps we make to extract interesting cosmological information. I will discuss the steps we’ve taken to overcome these obstacles with prototype data from the Murchison Widefield Array by isolating foregrounds to a region of Fourier space outside a clean “epoch of reionization window.” Additionally, I will present some of most recent and exciting predictions for what 21 cm cosmology can tell us as we move to larger telescopes like the Hydrogen Epoch of Reionization Array and higher redshifts.

String Seminar
Location: UCB – 402 Old Le Conte, 3:40 p.m.
Speaker: Brian Swingle (Stanford)
Title: “The Information Theoretic Interpretation of the Length of a Curve”

Physics RPM – no RPM today

Wednesday, October 22

BOSS Lunch
Location: LBNL – 50B-4205; featuring Nikhil Padmanabhan

Particle Theory Seminar
Location: LBNL – 50A-5132, 2:00 p.m.
Speaker:  Ken Van Tilburg (Stanford)
Title: “Searching for Dilaton Dark Matter with Atomic Clocks”

String Group Meeting
Location: UCB – 402 Old LeConte, 3:40 p.m.
Speaker: Thomas Bachlechner (Cornell)
Title: “Naturally Aligned Chaotic Inflation”

CANDi
Location: LBNL, 50-5026, 3:30 p.m.
Speaker: Discussion

Thursday, October 23

Astronomy Lunch
Location: UCB, B5 Hearst Field Annex – 12:30 p.m.
Speakers: *
Melissa Graham (UC Berkeley) “SN2014J with APF” / * Daniel Lecoanet (UC Berkeley)  “Dedalus: A Flexible, Open-Source PDE Solver” / * Eve Ostriker (Princeton)  “Formation of magnetized prestellar cores”

Physics Research Progress Meeting – no RPM today

Astronomy Colloquium
Location: UCB, 2 LeConte Hall, 4:10 p.m.
Speaker: Eve Ostriker (Princeton)
Title: tba
Abstract: tba

Friday, October 24

INPA Seminar
Location: LBNL, 50-5026, 12 p.m.
Speaker: Joulien Tatar (U. of Washington & UC-Irvine)

Title: “Toward Completion of the Hexagonal Prototype Antarctic Ross Ice-shelf ANtenna Neutrino Array [ARIANNA]“
Abstract:  tba

SSL Colloquium
Location: SSL Addition Conference Room (#105) – 3:00 p.m.
Speaker: tba
Title: tba

BCCP Seminars

Monday, October 20
RAL seminar

Location: UCB,  Hearst Field Annex B1, 3:10 p.m.
Speaker: Tabitha Voytek (Carnegie Mellon University)
Title: Hydrogen and the First Stars: First Results from the SCI-HI 21-cm all-sky spectrum experiment
Abstract: I will be introducing the 
Sonda Cosmologica de las Islas para la Deteccion de Hidrogeno Neutro” (SCI-HI) experiment. This experiment is an all-sky 21-cm brightness temperature spectrum experiment studying the cosmic dawn (z~15-35) through the temporal evolution of the IGM. The experiment is a collaboration between Carnegie Mellon University (CMU) and Instituto Nacional de Astrofísica, Óptica y Electrónica (INAOE) in Mexico. Initial deployment of the SCI-HI experiment occurred in June 2013 on Guadalupe; a small island about 250 km off of the Pacific coast of Baja California in Mexico. I will discuss the preliminary measurements from this deployment, placing first constraints on the 21-cm all-sky spectrum around 70 MHz (z~20), see Voytek et al (2014). I will also discuss the current work to improve the experiment; including both instrumental improvements and deployment locations.

Tuesday October 21
Berkeley Cosmology Seminars
Location: UCB – Hearst Field Annex B1, 1:10 p.m. (also videoconferenced to LBNL 50-5026)
Speaker: Josh Dillon, MIT
Title: “Chasing the Cosmic Dawn with 21 cm Tomography”
Abstract: Realizing the promise of 21 cm cosmology to provide an exquisite probe of astrophysics and cosmology during the cosmic dark ages and the epoch of reionization has proven extremely challenging. We’re looking for a small signal buried under foregrounds orders of magnitude stronger. We know that we’re going to need very sensitive, and thus very large, low frequency interferometers, which present their own set of difficulties. And, as I will explain, we’re going to need a rigorous statistical analysis of the maps we make to extract interesting cosmological information. I will discuss the steps we’ve taken to overcome these obstacles with prototype data from the Murchison Widefield Array by isolating foregrounds to a region of Fourier space outside a clean “epoch of reionization window.” Additionally, I will present some of most recent and exciting predictions for what 21 cm cosmology can tell us as we move to larger telescopes like the Hydrogen Epoch of Reionization Array and higher redshifts.

 

Upcoming Events

Tuesday, October 28
Cosmology/BCCP
Location: UCB,
Hearst Field Annex B-1, 1:10 p.m.
Speaker:
Joseph Clampitt, Penn
Title: tba

Friday, October 31
INPA/Cosmology/BCCP
Location: LBNL,
50-5026, 12 p.m.
Speaker: Liang Dai, JHU
Title: tba

 

BCCP events this week

 Tuesday October 21
Berkeley Cosmology Seminars
Location: UCB – Hearst Field Annex B1, 1:10 p.m. (also videoconferenced to LBNL 50-5026)
Speaker: Josh Dillon, MIT
Title: “Chasing the Cosmic Dawn with 21 cm Tomography”
Abstract: Realizing the promise of 21 cm cosmology to provide an exquisite probe of astrophysics and cosmology during the cosmic dark ages and the epoch of reionization has proven extremely challenging. We’re looking for a small signal buried under foregrounds orders of magnitude stronger. We know that we’re going to need very sensitive, and thus very large, low frequency interferometers, which present their own set of difficulties. And, as I will explain, we’re going to need a rigorous statistical analysis of the maps we make to extract interesting cosmological information. I will discuss the steps we’ve taken to overcome these obstacles with prototype data from the Murchison Widefield Array by isolating foregrounds to a region of Fourier space outside a clean “epoch of reionization window.” Additionally, I will present some of most recent and exciting predictions for what 21 cm cosmology can tell us as we move to larger telescopes like the Hydrogen Epoch of Reionization Array and higher redshifts.

People

Executive Director
Oliver Zahn

Directors

Uros Seljak

Saul Perlmutter, Nobel Laureate

Founding Director
George Smoot, Nobel Laureate

Current BCCP-affiliated Postdocs

Florian Beutler

Andreu Font

Brian Hayden

Adrian Liu

Michael Mortonson

Claire Poppett

Marcel Schmittfull

Blake Sherwin

BCCP-affiliated graduate and undergraduate students

Nick Hand

Casey Stark

Erik Aldape

 

Cosmology Data Science (CDS) Fellows
Beth Reid

Kyle Barbary

Yu Feng

Other BCCP-affiliated faculty and LBL scientists

Greg Aldering

Steven Bailey

Chris Bebek

Julian Borril

Joanne Cohn

Bob Cahn

William Holzapfel

Alex Kim

Adrian Lee

Michael Levi

Eric Linder

Pat McDonald

Peter Nugent

Natalie Roe

David Schlegel

Rollin Tomas

Martin White

 

Former BCCP Postdocs
Sudeep DasHee-Jong Seo

Anze Slosar

Tristan Smith

Jeremy Tinker

System Admin

Bryan Abshier

Aspen conference winter 2015

Program and application information coming soon!