Max Planck Institute for Astrophysics

Multiphase Gas (MPRG)

Publications of Michele Compostella

All genres

Journal Article (2)

1.

Journal Article

Garaldi, E.; Compostella, M.; Porciani, C.: The Goldilocks problem of the quasar contribution to reionization. Monthly Notices of the Royal Astronomical Society 483 (4), pp. 5301 - 5314 (2018)

MPG.PuRe

2.

Journal Article

Kakiichi, K.; Graziani, L.; Ciardi, B.; Meiksin, A.; Compostella, M.; Eide, M. B.; Zaroubi, S.: The concerted impact of galaxies and QSOs on the ionization and thermal state of the intergalactic medium. Monthly Notices of the Royal Astronomical Society 468 (3), pp. 3718 - 3736 (2017)

MPG.PuRe

Conference Paper (2)

3.

Conference Paper

Garaldi, E.; Compostella, M.; Porciani, C.: Quasars at the Cosmic Dawn: effects onReionization properties in cosmologicalsimulations. In: Peering towards Cosmic Dawn, Vol. 333, pp. 56 - 59 (Eds. Jelić , V.; van der Hulst, T.). 333rd Symposium of the International-Astronomical-Union (IAU), Dubrovnik, Croatia, October 02, 2017 - October 06, 2017. (2018)

MPG.PuRe

4.

Conference Paper

Garaldi, E.; Compostella, M.; Porciani, C.: Quasars at the Cosmic Dawn: effects on Reionization properties in cosmological simulations. In: Peering towards Cosmic Dawn (IAU Symposium 333), pp. 56 - 59 (Eds. Jelic, V.; Hulst, T. v. d.). 333rd Symposium of the International Astronomical Union, Dubrovnik, Croatia, October 02, 2017 - October 06, 2017. Cambridge University Press, Cambridge, UK (2017)

MPG.PuRe

News

How do Lyman-alpha photons escape from Galactic Labyrinths?

August 01, 2024

With the recent advancements in the Lyman-alpha observations, it becomes more and more important to have theoretical models to help us decode the intricate Lyman-alpha spectral line. Scientists at MPA developed a theoretical approach to describe the escape of Lyman-alpha from scenarios where there is an empty hole to emulate the porous gas around galaxies.

more

Probing Cold Gas with the Resonance Doublet of Singly Ionized Magnesium

April 01, 2024

Traditional studies of the gas around galaxies rely in particular on absorption and emission features of neutral hydrogen, the simplest and most abundant element in the universe. MPA researchers have now investigated alternative tracers, in particular the resonance doublet of singly ionized magnesium and found that analyzing this emission can lead to significant advances in studying the circum-galactic medium. They showed the potential of the magnesium doublet as an alternative to Lyman-alpha emission through a new radiative transfer code and suggest that the magnesium doublet ratio could even be used as a tracer of the Lyman-continuum escape.

more

Magnetic fields in multiphase gas: A turbulent tango

November 01, 2023

Space is filled with gases of vastly different temperatures and it is important to understand how these interact. A group of scientists at MPA has now looked into the mixing of gases with and without magnetic fields. Surprisingly, they find that the outcome depends on whether turbulence is already present at the beginning. Without turbulence, magnetic fields can suppress the mixing by suppressing turbulence, while if the turbulence is already present, magnetic fields have a marginal effect.

more

Max Grönke starts new research group at MPA

December 09, 2021

There are still many unanswered questions in galaxy formation and evolution, especially on small scales, thinks Max Grönke, who leads the research group “Multiphase Gas” at the Max Planck Institute for Astrophysics since November 1, 2021.

more

Group meeting

We meet regularly in our group meeting to discuss related topics and welcome new participants.

Multiphase Gas meeting

Time: each Wednesday 14:00
Location: Music room (402)
Contact: Max Gronke
Webpage: Current schedule

Publications

Bolamperti, A.; Chang, S. -.; Vernet, J.; Zanella, A.; Gronke, M.; Arrigoni Battaia, F.; Calura, F.; Iani, E.; Vanzella, E.: Constraining the geometry of the gas surrounding a typical galaxy at z=3.4 with Lyα polarization. ASTRONOMY & ASTROPHYSICS 695, A119 (2025)

MPG.PuRe

Nikolis, C.; Gronke, M.: Strength in numbers: A multiphase wind model with multiple cloud populations. Monthly Notices of the Royal Astronomical Society 530 (4), pp. 4597 - 4613 (2024)

MPG.PuRe

Apostolovski, Y.; Aravena, M.; Anguita, T.; Bethermin, M.; Burgoyne, J.; Chapman, S.; Breuck, C. D.; Gonzalez, A.; Gronke, M.; Guaita, L. et al.; Hezaveh, Y.; Hill, R.; Jarugula, S.; Johnston, E.; Malkan, M.; Narayanan, D.; Reuter, C.; Solimano, M.; Spilker, J.; Sulzenauer, N.; Vieira, J.; Vizgan, D.; Weiß, A.: Extended Lyman-α emission towards the SPT2349-56 protocluster at z = 4.3. Astronomy and Astrophysics 683, A64 (2024)

MPG.PuRe