Chandra X-Ray Observatory
	(CXC)

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 12 Targets and Abstracts

Proposal NumberSubject CategoryPI NameChandra TimeTitle
12300004WD Binaries and CV Wolfgang Pietsch
100
Resolving short supersoft source states of optical novae in the core of M31
12500003SN, SNR and Isolated NS Jules Paul Halpern
66
Measuring the Magnetic Field of the CCO Pulsar in Puppis A
12700007Active Galaxies and Quasars Norbert Schartel
120
The First Test of General Relativity in a Strong Magnetic Field

Subject Category: WD Binaries and CV

Proposal Number: 12300004

Title: Resolving short supersoft source states of optical novae in the core of M31

PI Name: Wolfgang Pietsch

We propose to continue the monitoring of the M31 core with 5x23ks XMM-Newton EPIC and 5x20ks Chandra HRC-I observations equally distributed from Nov 2010 to mid Feb 2011 to determine additional light curves for short SSS states of optical novae. SSS states with <100 d duration indicate accreting massive white dwarfs (WDs). They are proposed as SN Ia progenitors and determining their frequency is very important. We will correlate detected sources with novae from optical monitoring. With a nova rate in the field of ~38/yr and SSS states lasting from weeks to years we will follow light curves of many novae. Durations of the nova SSS state will allow us to constrain envelope and WD masses. We will also monitor time variability of ~200 M31 X-ray sources (mostly XRBs).


Subject Category: SN, SNR and Isolated NS

Proposal Number: 12500003

Title: Measuring the Magnetic Field of the CCO Pulsar in Puppis A

PI Name: Jules Paul Halpern

Having discovered the pulsar in Puppis A and ruled out a magnetar, we will determine if it is a weakly magnetized neutron star like the other CCO pulsars by obtaining a phase-coherent timing solution, the only practical way of measuring its spin-down rate. Our sensitivity to P-dot will correspond to a surface dipole B-field as small as 3.e10 G, comparable to our measured value for the CCO pulsar PSR J1852+0040 in Kes 79. New spectra will also allow us to further localize its apparent 0.8 keV emission line in rotation phase, and to model the emission and viewing geometry of this unique system. This will provide important support for the "anti-magnetar" model of CCOs, while exploring possible reasons for their unexplained surface hot spots.


Subject Category: Active Galaxies and Quasars

Proposal Number: 12700007

Title: The First Test of General Relativity in a Strong Gravitational Field

PI Name: Norbert Schartel

We propose four 120 ks XMM-Newton observations of 1H0707-495 simultaneously with four 30 ks Chandra HETGS-observations to test for the first time the general theory of relativity in a strong gravitational field.

Smithsonian Institute Smithsonian Institute

The Chandra X-Ray Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory. 60 Garden Street, Cambridge, MA 02138 USA.   Email:   cxchelp@head.cfa.harvard.edu Smithsonian Institution, Copyright © 1998-2017. All rights reserved.