Browsing by Author "Krauss, Felicia"
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Item The evolution of the current outburst of the low mass X-ray binary IGR J17091-3624(The Astronomer's Telegram, 2016-03-02) Grinberg, Victoria; Fuerst, Felix; Ballhausen, Ralf; Eikmann, Wiebke; Wilms, Joern; Ferrigno, Carlo; Bozzo, Enrico; Bel, Marion Cadolle; Egron, Elise; Favre, Thierry; Krauss, Felicia; Kreykenbohm, Ingo; Nowak, Michael A.; Pottschmidt, Katja; Rodriguez, JeromeItem MULTI-WAVELENGTH OBSERVATIONS OF PKS 2142−75 DURING ACTIVE AND QUIESCENT GAMMA-RAY STATES(IOP Publishing, 2013-12-04) Dutka, Michael S.; Ojha, Roopesh; Pottschmidt, Katja; Finke, Justin D.; Stevens, Jamie; Edwards, Philip G.; Blanchard, Jay; Lovell, James E. J.; Nesci, Roberto; Kadler, Matthias; Wilms, Joern; Tosti, Gino; Pursimo, Tapio; Krauss, Felicia; Müller, Cornelia; Gehrels, NeilPKS 2142−75 (a.k.a. 2FGL J2147.4−7534) is a flat-spectrum radio quasar that was observed quasi-simultaneously by a suite of instruments across the electromagnetic spectrum during two flaring states in 2010 April and 2011 August as well as a quiescent state from 2011 December through 2012 January. The results of these campaigns and model spectral energy distributions (SEDs) from the active and quiescent states are presented. The SED model parameters of PKS 2142−75 indicate that the two flares of the source are created by unique physical conditions. SED studies of flat-spectrum radio quasars are beginning to indicate that there might be two types of flares, those that can be described purely by changes in the electron distribution and those that require changes in other parameters, such as the magnetic field strength or the size of the emitting region.Item Results of ongoing Swift/XRT monitoring of the low mass X-ray binary IGR J17091-3624(The Astronomer's Telegram, 2016-03-17) Ballhausen, Ralf; Grinberg, Victoria; Wilms, Joern; Fuerst, Felix; Eikmann, Wiebke; Bozzo, Enrico; Bel, Marion Cadolle; Egron, Elise; Favre, Thierry; Ferrigno, Carlo; Krauss, Felicia; Kreykenbohm, Ingo; Nowak, Michael A.; Pottschmidt, Katja; Rodriguez, Jerome; Bachetti, MatteoItem Swift detection of an X-ray flare from the flaring blazar PKS 0502+049(2013-03-21) Ojha, Roopesh; Dutka, Michael; Fermi Large Area Telescope Collaboration; Pottschmidt, Katja; Krauss, FeliciaItem Swift Follow-up of the Gamma-ray Detection of 4C +50.11(2014-02-11) Krauss, Felicia; Carpenter, Bryce; Ojha, Roopesh; Kadler, Matthias; Fermi/LAT Collaboration; Wilms, Joern