Michael C. H. Yeung
Michael C. H. Yeung

PhD student in the High Energy Group

About Me

I am a PhD student in astronomy at the Max Planck Institute for Extraterrestrial Physics in Garching, Germany. I was born and raised in Hong Kong and my name is 楊鎮熙 in Chinese.
My primary research revolves around X-ray diffuse emissions of various physical scales, and making use of X-ray spectroscopy to infer properties of the constituents of the diffuse X-ray background. Recently, I have been a ‘cartographer’ of the Local Hot Bubble, creating 3D map of the hot plasma in the solar neighbourhood.
In addition to my full-time research in X-ray astronomy, I have been a lifelong fan of the beautiful game ⚽ which I play regularly with friends.

Interests
  • Interstellar Medium
  • Diffuse X-ray Background
  • Solar Wind Charge Exchange
  • Galactic Outflows
Education
  • PhD in Astronomy

    Max Planck Institute for Extraterrestrial Physics

  • MPhil in Astrophysics

    University of Hong Kong

  • BSc in Astronomy & Physics

    University of Hong Kong

📚 My Research
My current research focuses on diffuse emissions and large-scale structures in the X-ray sky, ranging from the physical scale of the Solar System (~AU) to large-scale outflow in the Galaxy (~kpc).

Recently, I concern myself with the properties the local interstellar medium (LISM): our Solar System lives in a low density environment called the Local Hot Bubble (LHB), generally believed to be created by a sucession of supernova explosions a few to tens of million years ago. These explosions heated the bubble to ~106 Kelvin (~0.1 keV) today, a temperature at which the gas emits thermally in the X-ray band.
Looking from the inside, a X-ray all-sky survey instrument is therefore able to capture a holistic view of the LHB. This dataset is available in the form of the eROSITA All-Sky Surveys (eRASSs), which I rely on to decompose the diffuse X-ray background into its physical constitutes including the LHB, and to constrain their physical properties.
Featured Publications
Recent Publications
(2024). The Distance to Dobashi 6193—A Dark Cloud Shadowing the eROSITA Bubbles. RNAAS.
(2024). The SRG/eROSITA diffuse soft X-ray background: I. The local hot bubble in the western Galactic hemisphere. A&A.
(2023). SRG/eROSITA X-ray shadowing study of giant molecular clouds. A&A.