PROBING REFLECTION IN A DWARF NOVA SS CYGNI USING JOINT NUSTAR AND XMM DATA

We propose for a joint observation of SSvirgulCyg in its optical quiescence andoutburst states with NuSTAR and XMM with the aim of having first robustdetection of reflection component, commonly observed in binaries and AGNs.Presence of such component have been inferred via detection of Fe 6.4 keVline, however no direct detection till date. We will fit the phase averagedspectra to derive reflection amplitude. These measurements will help verifytheoretical ideas like presence of central hole in disk, main contributingsite for the reflection during the two states and also to study response ofthe system to varying accretion conditions. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]