Symposium S4  29 – 30 June 2017

Astrophysical Jets and Outflows - Synergies from compact objects to protostars

Both Registration and abstract submission is open!

  • 27 December 2016: Registration and abstract submission open!
  • 15 December 2016: Poster created.
  • 14 December 2016: Invited speakers added.
  • 21 November 2016: Webpage created

Aims and scope

Astrophysical jets are produced by a wealth of objects, from stars being born, to stars collapsing and dying, to various flavours of dead stars. The collimated outflows in each scenario are launched due to the process of accretion, whether it be onto a young stellar object, from a magnetized hot flow around a black hole, or during a stellar collapse and the production of a gamma-ray burst. After the birth of jets, they accelerate, escape the gravitational field of their birthplace, before injecting energy into and drive chemistry in their surroundings. In planet forming protostellar disks the outflowing material might even affect planet migration. Thus there are a multitude of processes taking place at various stages and on different scales. Many of the identified processes are important in both jets from compact objects, protostellar sources and other astrophysical jets. Some efforts have been taken to bridge the various communities to maximize the synergy. Therefore we aim to continue this with a meeting where astronomical researchers from any community will present their latest findings on astrophysical jets and outflows.

We aim to discuss the latest advances, theoretical and observational, and future prospects in understanding the role of astrophysical jets and outflows in all types of sources, bringing together the different jet communities, from protostars, to accreting black holes (supermassive, stellar-mass and intermediate-mass), evolved stars, neutron stars, white dwarfs, gamma-ray bursts (GRBs), tidal disruption events (TDEs) and ultraluminous X-ray sources (ULXs). In terms of feedback, black hole jets energise large-scale synchrotron lobes, and protostellar jets/outflows mix disk-processed species and grains into the surrounding cloud and also act as regulators of star masses and the global star formation timescales. Common physics exists across the power scale of relativistic jets, starting with the Fundamental Plane of black hole activity, to more recent advancements linking jets in black holes to those in GRBs, CVs, YSOs, and TDEs. Jets and outflows are regulators of feedback - in terms of star formation (especially in the case of protostellar jets) and of galaxy growth in the early Universe (AGN).

Clearly a tight connection between theory and observations is required in order to bridge the large span of physical scales involved (size, density, temperature), as well as a coupling with the chemistry. Furthermore, there are several cases where the different communities can work together and share advances to increase the understanding of jets and outflows. We believe that bringing together experts on theory and observations to discuss these topics and questions will be beneficial for the general understanding of the importance and impact of astrophysical jets and outflows. The structure of the meeting will allow experts from different fields to better understand outflow physics under different conditions and to encourage new thinking in each field and collaborations between fields.

Therefore we invite you to submit your contributed talk to participate in this opportunity to bridge several astronomical communities.

The symposium will run over 6 blocks of 1.5 hours each, where the talks will organised in terms of topic and focus on commonalities (and differences) to further discussion and synergy between the communities.


  • Ubiquity and properties of jets/outflows from compact objects to protostars: possible synergies
  • Jet formation/launching, inflow - outflow connection
  • Composition, power, dynamics and chemistry of jets/outflows
  • Interactions with surrounding medium and feedback on the driving system
  • Future outlook and facilities

Invited speakers
Confirmed invited speakers, review and contributed (more to come):

  • Dr. Sylvie Cabrit (Observatoire de Paris LERMA)
  • Dr. Claudio Codella (INAF Arcetri Observatory)
  • Prof. Jonathan Ferreira (Institute of Planetology and Astrophysics of Grenoble)
  • Prof. Gabriele Ghisellini (INAF Osservatorio Astronomico di Brera)
  • Prof. Sebastian Heinz (Univ. Wisconsin-Madison)
  • Prof. Sera Markoff (Anton Pannekoek Institute for Astronomy)
  • Dr. Francesca Panessa (IAPS-INAF, Rome)
  • Prof. Tom Ray (Dublin Institute for Advanced Studies)
  • Dr. Daniel Tafoya (Chalmers University of Technology)
  • Dr. Sasha Tchekhovskoy (UC Berkeley)

Scientific organisers

  • Magnus Persson (Chalmers University of Technology) (co-chair)
  • Dave Russell (NYU Abu Dhabi) (co-chair)
  • Simone Migliari (ESAC) (co-chair)
  • Odysseas Dionatos (University of Vienna)
  • Lars Kristensen (University Copenhagen)
  • Linda Podio (Arcetri Observatory)
  • Simone Antoniucci (Rome Observatory)

Magnus Persson (magnpe @, Dave Russell (dave.russell @, Simone Migliari (smigliari @

Updated on Sun Jan 22 07:38:18 CET 2017