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Showing 1–9 of 9 results
Advanced filters: Author: Matteo Guainazzi Clear advanced filters

  • Kinematic measurements of the Perseus galaxy cluster reveal two drivers of gas motions: a small-scale driver in the inner core associated with black-hole feedback and a large-scale driver in the outer core powered by mergers.

    • Marc Audard
    • Hisamitsu Awaki
    • Elena Bellomi
    Research
    Nature
    P: 1-5

  • XRISM observations show the presence of odd-numbered elements chlorine and potassium in Cas A. These findings suggest that stellar activity plays an important role in cosmic chemical evolution, enriching space with elements vital for planets and life.

    • Marc Audard
    • Hisamitsu Awaki
    • Manan Agarwal
    ResearchOpen Access
    Nature Astronomy
    Volume: 10, P: 144-153

  • This Perspective looks forwards to the next decade of X-ray astronomy, explaining how it will contribute to better understanding of the high-energy Universe. In this context, the authors describe the NewAthena mission, a concept led by the European Space Agency.

    • Mike Cruise
    • Matteo Guainazzi
    • Eleonora Troja
    Reviews
    Nature Astronomy
    Volume: 9, P: 36-44

  • Observations of a luminous quasar from the high-resolution spectrometer Resolve aboard XRISM revealed highly inhomogeneous wind structure outflowing from a supermassive black hole, which probably consists of up to a million clumps.

    • Marc Audard
    • Hisamitsu Awaki
    • Yerong Xu
    Research
    Nature
    Volume: 641, P: 1132-1136

  • X-ray spectroscopic observations of the Centaurus galaxy cluster with the X-Ray Imaging and Spectroscopy Mission satellite show that the hot gas flows along the line of sight relative to the central galaxy.

    • Marc Audard
    • Hisamitsu Awaki
    • Anwesh Majumder
    Research
    Nature
    Volume: 638, P: 365-369

  • This Review Article summarizes our current understanding of ionized outflows in active galactic nuclei, observed in absorption in the ultraviolet and X-ray wavelengths, including the most relevant observations as well as their origin and acceleration mechanisms.

    • Sibasish Laha
    • Christopher S. Reynolds
    • Daniel Proga
    Reviews
    Nature Astronomy
    Volume: 5, P: 13-24

  • X-ray observations of the core of the Perseus cluster reveal a remarkably quiescent atmosphere in which the gas has a line-of-sight velocity dispersion of about 164 kilometres per second in the region 30–60 kiloparsecs from the central nucleus; turbulent pressure support in the gas is four per cent of the thermodynamic pressure, necessitating only a small correction to the total cluster mass determined from hydrostatic equilibrium.

    • Felix Aharonian
    • Hiroki Akamatsu
    • Abderahmen Zoghbi
    Research
    Nature
    Volume: 535, P: 117-121

  • High-resolution X-ray spectra show near-solar abundances of chromium, manganese and nickel with respect to iron in the Perseus cluster, suggesting that the progenitors of type Ia supernovae could be near- and sub-Chandrasekhar-mass white dwarfs.

    • Felix Aharonian
    • Hiroki Akamatsu
    • Abderahmen Zoghbi
    Research
    Nature
    Volume: 551, P: 478-480