Activities in the last quarter
Sixth annual CHANG-ES collaboration meeting
30 July – 4 August 2018, Calgary, Canada
CHANG-ES is the Continuum HAlos in Nearby Galaxies – an Evla Survey. CHANG-ES is a survey of edge-on spiral galaxies that reveals the interaction between the star forming disk and the extended halo. CHANG-ES observed 35 edge-on galaxies in the local universe with the Jansky Very Large Array in L band (1-2 GHz) and in C band (5-7 GHz). Follow-up observations at other wavelengths have been made or are in preparation. The 6th annual CHANG-ES collaboration meeting was held in Calgary, from July 30 to August 4, 2018.
Link: https://phas.ucalgary.ca/galaxies/chang-es-2018
IAU General Assembly Focus Meeting 8: New Insights in Extragalactic Magnetic Fields
29-31 August 2018, Vienna, Austria
The coming years and decades will see a burst in our information and understanding of extragalactic magnetic fields due to the next generation of radio astronomy facilities, especially the SKA and its precursors, as well as major advances in MHD numerical simulations and algorithmic improvements to extract magnetism information from the databases. This Focus Meeting discussed the challenges and opportunities for understanding the magnetized Universe from scales of galaxies to the cosmic web, and connected information across the spectrum. The meeting was concluded by an entertaining and engaging summary presentation. Science highlights were submitted by meeting participants and fed into a summary contribution for the IAU proceedings, which will be published soon and shared in the next eNews.
Link: https://iau2018fm8magnetism.wordpress.com/
LOFAR Magnetism Key Science Project annual meeting
10-14 September 2018, Kraków, Poland
The 2018 Annual Meeting of the LOFAR Magnetism Key Science Project took place in Kraków, Poland. The meeting included two days of science presentations, and 3 Busy Days. The meeting was organised by the Astronomical Observatory of the Jagiellonian University, and was hosted in the main building of the Faculty of Physics, Astronomy, and Applied Computer Science. The purpose of this meeting was to present recent science results obtained with LOFAR including with the ongoing LoTSS survey, discuss future work of the MKSP within the LOFAR project, as well as other related tasks.
Link: http://mksp2018.oa.uj.edu.pl/
Forthcoming events
POSSUM Busy Week
10-14 December 2018, Perth, Western Australia
The ASKAP POSSUM survey team (further information: http://askap.org/possum/Main/HomePage) is developing the resources to produce science-quality polarization data from ASKAP early science observations performed as the precursor telescope moves toward full survey science operations. The development activities for magnetism research will be furthered during a busy week being organised in Perth during December 2018. We will focus on advanced techniques for reliable polarization calibration using PAFs, accurate determination of polarized source properties, and preparation for pilot survey activities with ASKAP during 2019.
Link: http://askap.org/possum/Meetings/BusyWeekIII
New Perspectives on Galactic Magnetism
10-14 June 2019, Newcastle, UK
Rapid improvements in the observing capabilities of radio telescopes and in the physical realism of numerical simulations, as well as growing activities due to the Square Kilometre Array and its pathfinders all call for a timely meeting on galactic magnetism. “New Perspectives on Galactic Magnetism” aims to provide a platform to facilitate effective communication between observers, theorists and simulators to foster new collaborations and advance our field in new directions. We plan to have critical reviews accessible to all participants and presentations on new, ongoing studies in all aspects of galactic magnetism. We particularly welcome contributions on new observational techniques; the connection with other components of the interstellar medium, including cosmic rays; recent advances in numerical simulations; the use of numerical simulations to help interpret observations; and revisiting and addressing common assumptions in the field. For more details of the meeting, please visit the website (below) and send any inquiries to galacticmagnetism2019@gmail.com
Link: http://conferences.ncl.ac.uk/galacticmagnetism/
Recent publications
- Akahori et al (2018) PASJ, in press
“Optimum Frequency of Faraday Tomography to Explore the Inter-Galactic Magnetic Field in Filaments of Galaxies”
http://adsabs.harvard.edu/abs/2018arXiv180810546A - Banfield et al (2018) MNRAS in press
“Faraday rotation study of NGC 612 (PKS 0131-36): a hybrid radio source and its magnetised circumgalactic environment”
http://adsabs.harvard.edu/doi/10.1093/mnras/sty3108 - Brown et al (2018) MNRAS in press
“Classifying Complex Faraday Spectra with Convolutional Neural Networks”
http://adsabs.harvard.edu/doi/10.1093/mnras/sty2908 - Knuettel et al (2018) MNRAS in press
“The magnetic field strength of the Faraday screen surrounding the radio galaxy Coma A”
http://adsabs.harvard.edu/doi/10.1093/mnras/sty3018 - Krachmalnicoff et al (2018) A&A 618, 166
“S-PASS view of polarized Galactic synchrotron at 2.3 GHz as a contaminant to CMB observations”
http://adsabs.harvard.edu/abs/2018A%26A…618A.166K - Machida et al (2018) MNRAS 480, 17
“Radio broad-band visualization of global three-dimensional magnetohydrodynamical simulations of spiral galaxies – I. Faraday rotation at 8 GHz”
http://adsabs.harvard.edu/abs/2018MNRAS.480…17M - Machida et al (2019) MNRAS 482, 3394
“Radio broad-band visualization of global three-dimensional magnetohydrodynamical simulations of spiral galaxies – II. Faraday depolarization from 100 MHz to 10 GHz”
http://adsabs.harvard.edu/abs/2019MNRAS.482.3394M - Miskolczi et al (2019) A&A in press
“CHANG-ES XII: A LOFAR and VLA view of the edge-on star-forming galaxy NGC 3556”
http://adsabs.harvard.edu/abs/2018arXiv181104015M - Nikiel-Wroczyński et al (2019) A&A in press
“Exploring the properties of low-frequency radio emission and magnetic fields in a sample of compact galaxy groups using the LOFAR Two-Metre Sky Survey (LoTSS)”
http://adsabs.harvard.edu/abs/2018arXiv181008708N - O’Sullivan et al (2019) A&A in press
“The intergalactic magnetic field probed by a giant radio galaxy”
http://adsabs.harvard.edu/abs/2018arXiv181107934O - Riseley et al (2018) PASA in press
“The POlarised GLEAM Survey (POGS) I: First Results from a Low-Frequency Radio Linear Polarisation Survey of the Southern Sky”
http://adsabs.harvard.edu/abs/2018arXiv180909327R - Robishaw & Heiles (2019) Chapter to appear in The WSPC Handbook of Astronomical Instrumentation, Volume 1, Radio Astronomical Instrumentation: Radio Telescopes
“The Measurement of Polarization in Radio Astronomy”
http://adsabs.harvard.edu/abs/2018arXiv180909327R
- Sridhar, Heald, & van der Hulst (2018) Astronomy & Computing 25, 205
“cuFFS: A GPU-accelerated code for Fast Faraday rotation measure Synthesis”
http://adsabs.harvard.edu/abs/2018A%26C….25..205S - Thomson et al (2018) MNRAS 479, 5620
“Ghost of a shell: magnetic fields of Galactic supershell GSH 006-15+7”
http://adsabs.harvard.edu/abs/2018MNRAS.479.5620T - Vacca et al (2018) MNRAS 479, 776
“Observations of a nearby filament of galaxy clusters with the Sardinia Radio Telescope”
http://adsabs.harvard.edu/abs/2018MNRAS.479..776V
Report provided by Magnetism SWG