منابع مشابه
Emission line variability of RS Ophiuchi ⋆
We report that the Hα emission line of RS Oph was strongly variable during our 2004 observations on a time scale of 1 month. The line consisted of both a double peaked central narrow component (FWHM∼220 km s) and a strongly variable broad one (FWHM>2000 km s). The base of the Hα line was very broad with FWZI≈4600 km s on all spectra from 1986 to 2004. The variability of the broad component exte...
متن کاملRS Ophiuchi : Thermonuclear Explosion or Disc Instability ?
Sokoloski et al (2008) have recently reported evidence that the recurrent nova RS Ophi-uchi produced a pair of highly collimated radio jets within days of its 2006 outburst. This suggests that an accretion disc must be present during the outburst. However in the standard picture of recurrent novae as thermonuclear events, any such disc must be expelled from the white dwarf vicinity, as the nucl...
متن کاملSwift Observations of Shock Evolution in RS Ophiuchi
Our Swift observations of RS Oph form an unprecedented X-ray dataset to undertake investigations of both the central source and the interaction of the outburst ejecta with the circumstellar environment. Over the first month, the XRT data are dominated by emission from rapidly evolving shocks. We discuss the differences in derived parameters from those found for RXTE at early times and the evolu...
متن کاملThe Hydrogen Burning Turn-off of Rs Ophiuchi 2006
We report a coordinated multi-band photometry of the RS Oph 2006 outburst and highlight the emission line free y-band photometry that shows a mid-plateau phase at y ∼ 10.2 mag from day 40 to day 75 after the discovery followed by a sharp drop of the final decline. Such mid-plateau phases are observed in other two recurrent novae, U Sco and CI Aql, and are interpreted as a bright disk irradiated...
متن کاملAn Expanding Shell and Synchrotron Jet in RS Ophiuchi
We report high-resolution radio imaging of the recurrent nova RS Ophiuchi (RS Oph) during the first month of the 2006 outburst, using the Very Long Baseline Array (VLBA). Observations made on days 20.8 and 26.8 of the outburst show a synchrotron-emitting partial shell that is much brighter to the east than to the west. Assuming the broad component of the infrared lines corresponds to the outerm...
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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 1959
ISSN: 0004-6256
DOI: 10.1086/108016