Chandra X-Ray Observatory

Please note that the abstracts refer to the PROPOSED project - which is not necessarily identical to the approved project.
For accurate target information, please check the Observation Catalog.

Joint XMM/Chandra Accepted Cycle 8 Targets and Abstracts

Proposal NumberSubject CategoryPI NameChandra TimeTitle
08300002WD BINARIES AND CV Wolfgang Pietsch
Monitoring the supersoft source state of many optical novae in the core of M 31
08500003SN, SNR AND ISOLATED NS Bryan Gaensler
A new magnetar in a young supernova remnant
NGC 3516: Disk Diagnostics from a Windy BLSy1 in a High-State

Subject Category:WD BINARIES AND CV

Proposal Number: 08300002

Title:Monitoring the supersoft source state of many optical novae in the core of M 31

PI Name: Wolfgang Pietsch

We propose to monitor the M31 core with four 23ks XMM-Newton EPIC and four 20ks Chandra HRC-I observations equally distributed over AO5 to determine the duration of the SSS state of optical novae. Detected sources will be correlated with optical nova positions from the WeCAPP program covering the same area. EPIC will determine the SSS nature of sources using hardness ratios, HRC-I will enable continuous monitoring and separate nova candidates from bright X-ray sources. With a nova rate in the field of ~25/yr and SSS phase sometimes lasting for years we will simultaneously follow many nova light curves. The durations of the nova SSS state will allow us to constrain envelope and WD masses. We will also monitor time variability of ~200 M31 centre X-ray sources (mostly XRBs).

Subject Category:SN, SNR AND ISOLATED NS

Proposal Number: 08500003

Title:A new magnetar in a young supernova remnant

PI Name: Bryan Gaensler

Anomalous X-ray Pulsars (AXPs) are an exotic population of pulsating X-ray sources, which are now thought to be highly magnetized neutron stars ("magnetars"). However, the evolution, demography, and relation of magnetars to other types of neutron star are all not yet understood. We have identified a new candidate association between an AXP and a young supernova remnant (SNR), for which we propose XMM and Chandra observations. These data can confirm our AXP and SNR identifications, and can thus help constrain the origin, evolution and physical properties of the magnetar population.


Proposal Number: 08700001

Title:NGC 3516: Disk Diagnostics from a Windy BLSy1 in a High-State

PI Name: Tracey Turner

Recent advances have shown X-ray flux to be simply correlated with reflection-signatures from the disk and with an associated wind in AGN. It appears two things are essential to observe the disk/wind: 1) catch the Seyfert in a high-state where disk/wind features show up strongly and 2) separate out reprocessing from distant gas to allow isolation of disk/wind features. NGC 3516 is currently in a very high state, which we predict will lead to observable features from the disk and its wind. UV data indicate NGC 3516 is very likely to have an observable disk wind due to a favorable orientation. We request 210 ks XMM exposure on NGC 3156 with supporting 200 ks Chandra time to test our prediction of flux-linked disk reflection and wind.

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