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  1. No Access

    Article

    A massive, cooling-flow-induced starburst in the core of a luminous cluster of galaxies

    X-ray, optical and infrared observations reveal a very high rate of star formation in the core of an extremely luminous galaxy cluster; this starburst seems to be triggered by a cooling flow of the dense intra...

    M. McDonald, M. Bayliss, B. A. Benson, R. J. Foley, J. Ruel, P. Sullivan… in Nature (2012)

  2. No Access

    Chapter and Conference Paper

    First Simultaneous NIR/X-ray Flare Detection from SgrA*

    We summarize some of the results on the first simultaneous near-infrared/X-ray detection of the SgrA* counterpart which can be associated with the massive 3–4×106M⊙  black hole at the center of the Milky Way. We ...

    A. Eckart, F. K. Baganoff, M. Morris… in Growing Black Holes: Accretion in a Cosmol… (2005)

  3. No Access

    Article

    Rapid X-ray flaring from the direction of the supermassive black hole at the Galactic Centre

    The nuclei of most galaxies are now believed to harbour supermassive black holes1. The motions of stars in the central few light years of our Milky Way Galaxy indicate the presence of a dark object with a mass of...

    F. K. Baganoff, M. W. Bautz, W. N. Brandt, G. Chartas, E. D. Feigelson… in Nature (2001)

  4. No Access

    Article

    Charge coupled devices (CCDs) in X-ray astronomy

    The application of CCDs to X-ray imaging and spectroscopy for astronomy is described. The requirements which differ markedly from those of traditional optical applications are highlighted. Results of recent re...

    D. H. Lumb, G. D. Berthiaume, D. N. Burrows, G. P. Garmire… in Experimental Astronomy (1991)

  5. No Access

    Article

    The use of diamond turned & replicated wolter 1 telescopes for high sensitivity X-ray astronomy

    Following the success of Einstein, it is clear that telescopes of very large area (∼10 cm) with angular resolution (⪝20″) are needed for deep X-ray surveys and other observations. After a discussion of these o...

    J. L. Culhane, R. C. Catura, K. A. Pounds, P. de Korte, A. Franks… in Space Science Reviews (1981)

  6. No Access

    Chapter and Conference Paper

    The Use of Diamond Turned & Replicated Wolter 1 Telescopes for High Sensitivity X-Ray Astronomy

    Following the siicces of Einstein, it is clear that telescopes of very large area ( ~ 104 cm2) with angular resolution (⪝20″) are needed for deep X-ray surveys and other observations. After a discussion of these ...

    J. L. Culhane, R. C. Catura, K. A. Pounds, P. de Korte, A. Franks… in X-Ray Astronomy (1981)

  7. No Access

    Article

    Soft X-ray emission from the vicinity of the dwarf nova AY Lyrae

    THE discovery of a low-intensity soft X-ray source in a region of the sky containing the dwarf nova AY Lyrae is reported here. Figure 1 shows how the source, designated H1839 + 37, appeared in the superpositio...

    F. A. CÓRDOVA, G. P. GARMIRE in Nature (1979)

  8. No Access

    Article

    A search for X-ray pulsations from the Galactic Centre

    AN intriguing problem in astrophysics is the determination of the conditions which prevail at the centre of the Galaxy. X-rays can penetrate the intervening dust and gas which obscure visible light from this r...

    F. A. CÓRDOVA, G. P. GARMIRE, W. H. G. LEWIN in Nature (1979)

  9. No Access

    Article

    Observation of soft X-ray emission from a region near Per X-1

    Soft X-ray emission from the X-ray source Per X-1 was observed in the 0.4–2 keV energy interval from a rocket borne X-ray detector. Spectral analysis of the data indicates that in the 0.4–2 keV band the X-ray ...

    P. C. Agrawal, K. Long, G. P. Garmire in Astrophysics and Space Science (1974)

  10. No Access

    Chapter

    Review of Observational Results on γ-Ray Background

    Recent observations in the X- and γ-ray region of the electromagnetic spectrum have given strong evidence for the existence of an extragalactic intensity with a slowly steepening power law spectrum in the region ...

    G. W. Clark, G. P. Garmire, W. L. Kraushaar in Non-Solar X- and Gamma-Ray Astronomy (1970)