Home » Event Details

Event Details

Warm Ionized Medium (WIM) Workshop


October 6-9, 2019

We are happy to announce a workshop on the Warm Ionized Medium (WIM) in Galaxies to be held at the Green Bank Observatory in Green Bank, WV from October 6-9, 2019. A similar meeting was held twenty years ago in Green Bank in September 1999. A summary of that meeting can be found in PASP: https://iopscience.iop.org/article/10.1086/316537/pdf.

This workshop will be provide ample time for discussion, several review talks, and posters for 50 participants. Registration will be open on this site between July 1 and August 1. Scientific rationale, proposed topics, and travel instructions can be found below.

Scientific Rationale

The warm ionized medium, also called diffuse ionized gas, is a major component of the Galactic interstellar medium and is clearly important in other galaxies as well. In the twenty years since our previous workshop, understanding on the ionization, heating, cooling and overall dynamics of this gas has remained challenging. With several new Galactic surveys, the wealth of extragalactic data, and the advances in theoretical and computational models in the past few decades a workshop to reevaluate our understanding of the warm ionized medium is timely.

Topics to be discussed:

  1. The WIM in our Galaxy
  2. The WIM in other galaxies
  3. Optical/UV observations of the WIM
    a. H-alpha surveys
    b. He I, [NII], [SII], etc.
  4. Radio and sub-mm observations of the WIM
    a. Pulsar and FRB observations
    b. Radio recombination lines
    c. Radio polarimetry
  5. Infrared observations of the WIM
    a. Fine-structure transitions ([CII], [NII], etc.)
  6. Theory and simulations
    a. Ionization of the WIM
    b. Distribution and dynamics of the WIM
    c. Heating of the WIM
  7. Relationship to other ISM components
  8. Future WIM surveys

Structure of the Workshop

In the tradition of past Green Bank Workshops the total number of participants will be limited (50 people) which allows for candid discussions. The workshop will be held from the evening of Sunday, October 6 through the afternoon of Wednesday, October 9. Only a limited number of talks will be given which will allow ample time for discussion. Talks given will focus on new results and general reviews.

There will be space and time for poster presentations. The detailed schedule of the workshop, including the date, the number of talks, the length of each talk, etc., will be determined at a later date. There are no planned proceedings for this workshop other than a review summary in PASP.

Tentative Schedule

On 10/6/2019, we will begin at 5:00 p.m. and run into the evening

The workshop will end at 1:00 p.m. on 10/9/2019


Local Organizing Committee

  • Will Armentrout, Postdoc at Green Bank Observatory

Science Organizing Committee

  • Dana Balser, National Radio Astronomy Observatory
  • Kat Barger, Texas Christian University
  • Susan Clark, Hubble Fellow at the Institute for Advanced Study in Princeton
  • Ralf-Juergen Dettmar, Ruhr-Universitaet Bochum
  • Matt Haffner, Embry-Riddle Aeronautical University
  • Kathryn Kreckel, Postdoc at the Max Planck Institute for Astronomy in Heidelberg
  • Rebecca Levy, University of Maryland Graduate Student
  • Matteo Luisi, Postdoc at West Virginia University
  • Jorge Pineda, Jet Propulsion Laboratory
  • Dan Stinebring, Oberlin College
  • Kenny Wood, University of St. Andrews

For more information, please contact Will Armentrout (warmentr@nrao.edu), Postdoctoral Fellow at the Green Bank Observatory.


Registration will be open from July 1 to August 1.

The number of participants is limited to 50. If the workshop is oversubscribed, the SOC will use submitted abstracts to determine workshop participants. We highly encourage you to submit a poster or talk abstract, as registrants with abstracts will be more likely to be selected to attend if the meeting is oversubscribed. Please do not book travel before acceptances are sent out in mid-August.

There is a fee for this event set at $250 / person which will cover meals, lodging, and incidental expenses. The registration fee can be paid in person at the workshop in October or billed afterwards.

You will not be billed at the time of registration, so the amount due at registration is $0.00.

Price: $0.00

Start Time: 8:00 am
End Time: 5:00 pm

Start Date: 2019-10-06
End Date: 2019-10-09

Green Bank Observatory
155 Observatory Road
Box 2
Green Bank, West Virginia
United States
Map and Directions

Registration Details

Personal Information

Travel and Lodging

Housing is provided on-site. As there are a limited number of beds, some shared accommodations will be necessary.

Presentation Information


Anti-Spam Measure: Please enter the following phrase