Recently, a research team from the Purple Mountain Observatory, Chinese Academy of Sciences, in collaboration with the University of Michigan, Tsinghua University, and the University of Massachusetts Amherst, combined deep X ray observations from the European Space Agency’s (ESA) XMM Newton satellite and microwave measurements of the Sunyaev-Zel’dovich (SZ) effect from another ESA mission, Planck. The team has uncovered a long overlooked, massive reservoir of hot gas surrounding the Sombrero Galaxy. The findings indicate that the hot galactic halo of the Sombrero Galaxy is far more extensive and energetic than what is directly revealed by X ray observations.

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