Concepedia

Hardness-intensity Relations

Hardness-Intensity Relations is a diagnostic plot or graphical representation in X-ray astronomy that characterizes the spectral evolution of X-ray sources by correlating their hardness ratio, which reflects the relative flux in different energy bands, with their total X-ray intensity, thereby revealing physical changes in emission mechanisms or absorptions over time.

133

Publications

6.3K

Citations

357

Authors

214

Institutions

Publications per year

2017–2026

31

Variants

Hardness-intensity DiagramHid

Parents

Publications

133

X-ray variability of GX 339 - 4 in its very high state

Sigenori Miyamoto, Kazuhiro Kimura, Shunji Kitamoto et al. · The Astrophysical Journal · 1991 · 415 citations

, , +12

A global spectral study of black hole X-ray binaries

Robert Dunn, R. P. Fender, Elmar Körding et al. · Monthly Notices of the Royal Astronomical Society · 2010 · 303 citations · Full text

, , +14

Hysteresis in the light curves of soft X-ray transients

Thomas J. Maccarone, P. Coppi · Monthly Notices of the Royal Astronomical Society · 2003 · 208 citations · Full text

, , +16

Accretion states and radio loudness in active galactic nuclei: analogies with X-ray binaries

Monthly Notices of the Royal Astronomical Society · 2006 · 206 citations · Full text

, , +13

THE FAINT “HEARTBEATS” OF IGR J17091−3624: AN EXCEPTIONAL BLACK HOLE CANDIDATE

The Astrophysical Journal Letters · 2011 · 159 citations · Full text

, , +15

1–5 of 133

Authors

357

  1. MV
    M. van der Klis

    University of Amsterdam, Netherlands

    12 publications · 762 citations

    12

    h-index

  2. TB
    T. Belloni

    Brera Astronomical Observatory, Italy

    11 publications · 854 citations

    11

    h-index

  3. EK
    E. Kuulkers

    European Space Astronomy Centre, Spain

    11 publications · 449 citations

    10

    h-index

  4. JH
    J. Homan

    University of Amsterdam, Netherlands

    10 publications · 668 citations

    10

    h-index

  5. MM
    Mariano Méndez

    University of Groningen, Netherlands

    9 publications · 465 citations

    9

    h-index

1–5 of 357

Institutions

214

  1. University of Amsterdam

    Amsterdam, The Netherlands

    23 h-index

    70 publications

    3.9K citations

  2. Brera Astronomical Observatory

    Milan, Italy

    17 h-index

    32 publications

    2.3K citations

  3. Massachusetts Institute of Technology

    Cambridge, United States

    17 h-index

    30 publications

    1.4K citations

  4. Goddard Space Flight Center

    Greenbelt, United States

    16 h-index

    21 publications

    1.2K citations

  5. University of Southampton

    Southampton, United Kingdom

    15 h-index

    28 publications

    2.7K citations

  6. University of California, Berkeley

    Berkeley, United States

    11 h-index

    11 publications

    603 citations

  7. Institute of High Energy Physics

    Beijing, China

    11 h-index

    52 publications

    1.2K citations

  8. National Institute for Astrophysics

    Rome, Italy

    10 h-index

    29 publications

    1.2K citations

1–8 of 214

Venues

  1. The Astrophysical Journal

    ApJ · 39 publications · 2.3K citations

    27

    h-index

  2. Monthly Notices of the Royal Astronomical Society

    37 publications · 1.9K citations

    26

    h-index

  3. Astronomy and Astrophysics

    22 publications · 929 citations

    20

    h-index

  4. The Astrophysical Journal Letters

    7 publications · 308 citations

    7

    h-index

  5. The Astronomical Journal

    AJ · 3 publications · 124 citations

    3

    h-index

1–5