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Sep 16 – 20, 2019
University of Stuttgart, Campus Vaihingen
Europe/Berlin timezone

Cosmic Masers


Wednesday, September 18, 14:00-18:30

Room: 9.12

Anna Bartkiewicz (Nicolaus Copernicus University, Torun)
Elizabeth Humphreys (European Southern Observatory, Garching)
Bringfried Stecklum (Thueringer Landessternwarte Sternwarte, Tautenburg)
Wouter Vlemmings (Chalmers University of Technology, Gothenburg)

Cosmic masers naturally occur in the interstellar medium, stars and as extragalactic mega-masers. The most popular ones in the radio and (sub)millimetre wavelength range are formed by OH, water, SiO and methanol molecules. Due to their high brightness and compact nature, masers are one of the best existing tools for studying the kinematics and the physical conditions of regions that are hidden in dense environments. In our Galaxy, maser emission is typically found in
star-forming regions and evolved stars, and enables us to reach the smallest regions of neutral gas lying close to the central objects like protostars or AGB stars.

In the AG 2019 splinter session "Cosmic Masers" we want to present a diversity of maser studies, summarizing the newest discoveries in this field, presenting recent observations of high-frequency masers, magnetic field studies via polarization measurements, variability behaviours of emission and the scenarios behind them, as well as studying infrared counterparts.

We invite you to join the session, where we can uncover the invisible!


14:00 – 14:20 Anna BARTKIEWICZ (Nicolaus Copernicus University Torun)
Masers as the best tool in kinematics studies - review

14:20 – 14:50 Andrey SOBOLEV (Ural Federal University)
Discovery of new maser transitions of methanol during the flare in G358.931-0.030 - invited

14:50 – 15:10 Pawel WOLAK (Nicolaus Copernicus University Torun)
Contribution of maser line spectroscopy to testing hypotheses about the processes of high-mass star

15:10-15:50 coffee break (Building 47)

15:50 – 16:10 Boy LANKHAAR, (Chalmers University of Technology)
From maser polarization to magnetic fields

16:10 – 16:30 Bringfried STECKLUM (TLS Tautenburg)
Infrared observations of Class II methanol maser sources

16:30 – 16:50 Anastasia BISYARINA (Ural Federal University)
Near infrared K-band monitoring of young stellar objects in vicinity of flaring maser sources

16:50 – 17:10 Michał DURJASZ (Nicolaus Copernicus University Torun)
Variable methanol maser in G111.256-0.770

17:10 – 17:40 Anita RICHARDS
Measuring molecular gas on scales showing evolution in action with (sub-)mm masers

17:40 – 18:00 Daniel TAFOYA (Chalmers Sweden)
Masers in the envelopes of evolved stars

18:00 – 18:30 Dieter ENGELS (Hamburger Sternwarte, Universität Hamburg)
Variability of water masers in evolved stars on the timescale of decades