Dr. Hannelore Hämmerle
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MPI for Astrophysics

All News

Teaser 1568113061

X-ray emission from Warm-Hot Intergalactic Medium

July 01, 2019
The Warm-Hot Intergalactic Medium contributes substantially to the matter budget in the Universe – but it is only poorly studied, as it is very difficult to observe. Researchers at MPA have now predicted how it can be explored using heavier elements as tracers. Due to scattering of the cosmic X-ray background some of this line emission can be boosted substantially and should be accessible by the upcoming X-ray survey missions. [more]
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Biermann Lectures 2019: Kinetic modeling of astrophysical plasmas

June 03, 2019
By Professor Anatoly Spitkovsky, Department of Astrophysical Sciences at Princeton University [more]
Teaser 1568113061

Heat conduction in the Interstellar Medium

June 01, 2019
A team of researchers from the Max Planck Institute for Astrophysics, the University Observatory Munich, and collaborators have investigated the effect of heat conduction on the evolution of supernova blast waves and the structure of the supernova-driven interstellar medium (ISM). They find that thermal conduction has a strong impact on the volume filling fractions of cold, warm and hot gas. Thermal conduction also plays an important role for an accurate description of the hot ISM phase structure and the chemical composition of the cold phase of the turbulent ISM. [more]
Teaser 1568113062

Towards a complete model of the interstellar medium

May 01, 2019
For the first time MPA scientists and European collaborators have simulated the solar neighborhood interstellar medium (ISM), including physical processes following all major thermal and non-thermal components - ionized, neutral and molecular gas, dust, interstellar radiation, magnetic fields, and cosmic rays in the presence of star formation. As the different processes strongly influence each other, the simulations highlight the importance of including them all, in particular radiation and cosmic rays, for a realistic model of the star-forming ISM. Within the Gauss Center for Supercomputing (GCS) project SuperSILCC the team will use SuperMUC-NG, one of the world’s fastest supercomputers, to reveal the physical origins of the ISM structure also in extreme environments at high redshift. [more]
Teaser 1568113062

Sloshed and shocked: diagnosing gas motion in galaxy clusters

April 01, 2019
Recent high-resolution microwave and X-ray observations of the galaxy cluster RX J1347-1145 offer a new diagnosis tool of gas motion. Probing different parameters of the hot gas in galaxy clusters, these observations allow the MPA scientists to distinguish between gentle and violent motion of gas stirred by encounters with smaller sub-clusters. [more]
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Girls as researchers

March 28, 2019
Tricky questions, recalcitrant computers, working not in your mother tongue – the girls visiting MPA for this year’s Girls’ Day were faced with many challenges. Fortunately, MPA scientists supported them in their tasks so that at the end of a very busy day, all groups not only finished their tasks but also got an insight into what it means to be working at a scientific institute. [more]
Teaser 1568113061

Galaxy physics beyond the halo boundary

March 01, 2019
Models of the large-scale structure of galaxies in the Universe suffer from serious limitations, when artificial boundaries are imposed at the virial radius of the dark matter halo. As MPA scientists demonstrate, environmental effects vary smoothly across the traditionally adopted halo boundary and need to be taken into account even in low-density environments. [more]
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