2022 Berkeley

5th Global 21-cm Workshop

October 17-20, 2022


Hybrid Format: In-Person + Virtual


The Global 21-cm signal from neutral hydrogen in the intergalactic medium is expected to shed light on the appearance and evolution of the first stars, galaxies, and black holes in the Universe. It will thus represent a key probe of the Dark Ages, Cosmic Dawn, and the Epoch of Reionization. In 2018, the EDGES experiment reported an exotic tentative detection of this signal. Recently, other experiments have made steady progress toward testing this tentative detection, including SARAS3, which has reported the first non-detection. Understanding the origin of the EDGES signal and reaching a conclusive, high-precision detection of the global 21-cm signal from the early Universe motivates the 21-cm cosmology community to keep improving on our experimental (including ground- and space-based), theoretical, and modelling efforts. This workshop will serve as a forum to discuss all the recent progress and results. We will have talks and sessions discussing the most important aspects, as well as raising and addressing the key concerns. We look forward to enlightening interactions, debates, and lessons.

This workshop is sponsored by the UC Berkeley Space Sciences Laboratory (SSL).

In-kind support provided by The Lawrence Hall of Science.

Scientific Organizing Committee

  • Raul Monsalve (SSL, UC Berkeley, Chair)
  • Stuart Bale (SSL, UC Berkeley)
  • Isabella Carucci (Università degli Studi di Torino)
  • Aaron Ewall-Wice (Astronomy, UC Berkeley)
  • Adélie Gorce (McGill University)
  • Steven Murray (Arizona State University)
  • Aaron Parsons (Astronomy, UC Berkeley)
  • Kaja Rotermund (Lawrence Berkeley National Laboratory)
  • Peter Sims (McGill University / Arizona State University)
  • Mayuri S. Rao (Raman Research Institute)
  • Yidong Xu (National Astronomical Observatories, Chinese Academy of Sciences)

Local Organizing Committee

  • Raul Monsalve (SSL, UC Berkeley, Chair)
  • Ilia Roussev (SSL, UC Berkeley)
  • Lissvett Garcia Fields (SSL, UC Berkeley)
  • Paul La Plante (University of Nevada, Las Vegas)
  • Christian Hellum Bye (Astronomy, UC Berkeley)
  • Jensine Irasusta (SSL, UC Berkeley)
  • Darby McCauley (Astronomy, UC Berkeley)


The workshop will take place at the
Lawrence Hall of Science
1 Centennial Dr, Berkeley, CA 94720, USA

Transportation to Venue

The workshop organization has arranged bus transportation, every day, between the UC Berkeley campus and the Lawrence Hall of Science. There will be one uphill trip in the morning and one downhill trip in the afternoon.

Morning Pick-Up on UC-Berkeley Campus:
Monday-Thursday, 9:00am, Intersection of Crescent Lawn and University Dr, West Entrance

Evening Pick-Up at Lawrence Hall of Science:
Monday-Wednesday, 6:00pm, Lawrence Hall of Science
Thursday, 5:15pm, Lawrence Hall of Science

Map of Workshop Bus Stops

Coordinates of Workshop Bus Stops:
– On Campus: 37°52’18.1″N 122°15’54.0″W
– Lawrence Hall of Science: 37°52’45.4″N 122°14’45.6″W

Additionally, several UC Berkeley Campus Shuttles run around and on the UC Berkeley campus. The fare for external visitors is USD $1 CASH per ride. In particular, the Hill Line goes to the Lawrence Hall of Science (and beyond), and leaves from the Hearst Mining Circle stop on campus (across the street from the Department of Astronomy). Here is the Hill Line Schedule. The Central, Perimeter, and Reverse Perimeter Lines run between Downtown Berkeley and the Hearst Mining Circle with many stops along the way. Here is the website for the UC Berkeley Campus Shuttles.

COVID19 Protocols

The use of masks in the Lawrence Hall of Science and on the bus is voluntary, not required.


Information about parking on the UC Berkeley campus and next to the Lawrence Hall of Science can be found here:

Informal Dinner

An informal dinner will be held on Tuesday October 18, 2022, 7-9pm, at Jupiter pizza restaurant/brewhouse.


San Francisco and Oakland airports are served by many U.S. and international airlines. They are both within a short drive from Berkeley.

There are several ground transportation options from the San Francisco and Oakland airports. The Bay Area Rapid Transit system (BART) is the cheapest option, but you may find shuttle vans more convenient. Additional transit information is available at the airport web sites above.


Below are some suggested hotels in Berkeley.

Accommodation options near SF Airport.