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  1. Article ; Online: X-ray detection of a nova in the fireball phase.

    König, Ole / Wilms, Jörn / Arcodia, Riccardo / Dauser, Thomas / Dennerl, Konrad / Doroshenko, Victor / Haberl, Frank / Hämmerich, Steven / Kirsch, Christian / Kreykenbohm, Ingo / Lorenz, Maximilian / Malyali, Adam / Merloni, Andrea / Rau, Arne / Rauch, Thomas / Sala, Gloria / Schwope, Axel / Suleimanov, Valery / Weber, Philipp /
    Werner, Klaus

    Nature

    2022  Volume 605, Issue 7909, Page(s) 248–250

    Abstract: Novae are caused by runaway thermonuclear burning in the hydrogen-rich envelopes of accreting white dwarfs, which leads to a rapid expansion of the envelope and the ejection of most of its ... ...

    Abstract Novae are caused by runaway thermonuclear burning in the hydrogen-rich envelopes of accreting white dwarfs, which leads to a rapid expansion of the envelope and the ejection of most of its mass
    Language English
    Publishing date 2022-05-11
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/s41586-022-04635-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 26: Show issues Location:
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    Jg. 1995 - 2021: Lesesall (1.OG)
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    Zs.MG 9: Show issues
    Zs.MO 244: Show issues

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  2. Article ; Online: A classical nova, V2487 Oph 1998, seen in x-rays before and after its explosion.

    Hernanz, Margarita / Sala, Glòria

    Science (New York, N.Y.)

    2002  Volume 298, Issue 5592, Page(s) 393–395

    Abstract: Classical nova explosions are very energetic and frequent phenomena caused by explosive hydrogen burning on top of an accreting white dwarf. Observations of the recent nova V2487 Oph 1998 by the X-ray Multi-Mirror satellite (XMM-Newton) provide evidence ... ...

    Abstract Classical nova explosions are very energetic and frequent phenomena caused by explosive hydrogen burning on top of an accreting white dwarf. Observations of the recent nova V2487 Oph 1998 by the X-ray Multi-Mirror satellite (XMM-Newton) provide evidence that accretion (probably on a magnetic white dwarf) was reestablished as early as 2.7 years after the explosion. In addition, positional correlation with a source previously discovered by the Röntgen Satellite (ROSAT) in 1990 suggests that the site of a nova explosion had been seen in x-rays before the outburst.
    Language English
    Publishing date 2002-10-11
    Publishing country United States
    Document type Journal Article
    ZDB-ID 128410-1
    ISSN 1095-9203 ; 0036-8075
    ISSN (online) 1095-9203
    ISSN 0036-8075
    DOI 10.1126/science.298.5592.393
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

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    Zs.MG 77: Show issues

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  3. Article ; Online: Bright radio emission from an ultraluminous stellar-mass microquasar in M 31.

    Middleton, Matthew J / Miller-Jones, James C A / Markoff, Sera / Fender, Rob / Henze, Martin / Hurley-Walker, Natasha / Scaife, Anna M M / Roberts, Timothy P / Walton, Dominic / Carpenter, John / Macquart, Jean-Pierre / Bower, Geoffrey C / Gurwell, Mark / Pietsch, Wolfgang / Haberl, Frank / Harris, Jonathan / Daniel, Michael / Miah, Junayd / Done, Chris /
    Morgan, John S / Dickinson, Hugh / Charles, Phil / Burwitz, Vadim / Della Valle, Massimo / Freyberg, Michael / Greiner, Jochen / Hernanz, Margarita / Hartmann, Dieter H / Hatzidimitriou, Despina / Riffeser, Arno / Sala, Gloria / Seitz, Stella / Reig, Pablo / Rau, Arne / Orio, Marina / Titterington, David / Grainge, Keith

    Nature

    2013  Volume 493, Issue 7431, Page(s) 187–190

    Abstract: A subset of ultraluminous X-ray sources (those with luminosities of less than 10(40) erg s(-1); ref. 1) are thought to be powered by the accretion of gas onto black holes with masses of ∼5-20M cicled dot, probably by means of an accretion disk. The X-ray ...

    Abstract A subset of ultraluminous X-ray sources (those with luminosities of less than 10(40) erg s(-1); ref. 1) are thought to be powered by the accretion of gas onto black holes with masses of ∼5-20M cicled dot, probably by means of an accretion disk. The X-ray and radio emission are coupled in such Galactic sources; the radio emission originates in a relativistic jet thought to be launched from the innermost regions near the black hole, with the most powerful emission occurring when the rate of infalling matter approaches a theoretical maximum (the Eddington limit). Only four such maximal sources are known in the Milky Way, and the absorption of soft X-rays in the interstellar medium hinders the determination of the causal sequence of events that leads to the ejection of the jet. Here we report radio and X-ray observations of a bright new X-ray source in the nearby galaxy M 31, whose peak luminosity exceeded 10(39) erg s(-1). The radio luminosity is extremely high and shows variability on a timescale of tens of minutes, arguing that the source is highly compact and powered by accretion close to the Eddington limit onto a black hole of stellar mass. Continued radio and X-ray monitoring of such sources should reveal the causal relationship between the accretion flow and the powerful jet emission.
    Language English
    Publishing date 2013-01-10
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/nature11697
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 26: Show issues Location:
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    Zs.MG 9: Show issues
    Zs.MO 244: Show issues

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