Proposals: Chandra

Chandra Proposals

Cyg X-1

Filling the gap in understanding the wind structure of HDE 226868 / Cyg X-1:

PI: Katja Pottschmidt, CoIs: I. Miškovičová, D. Marcu, N. Hell, J. Wilms, M.A. Nowak, L. Oskinova, N. Schulz, F. Fürst, J. Torrejón, M. Hanke, G.V. Brown, D. Liedahl, Chandra Guest Observer Program, AO15

The observation was proposed and won as a ToO but has not been triggered yet as of the time of submission. The present proposal is a resubmission of this and the AO12--AO14 programs.

Filling the gap in understanding the wind structure of HDE 226868 / Cyg X-1:

PI: Katja Pottschmidt, CoIs: I. Miškovičová, D. Marcu, N. Hell, J. Wilms, M.A. Nowak, L. Oskinova, N. Schulz, F. Fürst, J. Torrejón, M. Hanke, G.V. Brown, D. Liedahl, Chandra Guest Observer Program, AO14

The observation was proposed and won as a ToO but has not been triggered yet as of the time of submission.

Filling the gap in understanding the wind structure of HDE 226868 / Cyg X-1:

PI: Katja Pottschmidt, CoIs: I. Miškovičová, D. Marcu, M. Hanke, J. Wilms, M.A. Nowak, L. Oskinova, N. Schulz, F. Fürst, J. Torrejón, Chandra Guest Observer Program, AO13

The observation was scheduled in 2012 February but we canceled it before execution due to Cyg X-1 returning into the soft state and it was not rescheduled.

Filling the gap in understanding the wind structure of HDE 226868 / Cyg X-1:

PI: Manfred Hanke, CoIs: J. Wilms, M.A. Nowak, L. Oskinova, K. Pottschmidt, N. Schulz, F. Fürst, I. Miškovičová, J. Torrejón, Chandra Guest Observer Program, AO12

Observation performed in 2011 January and analyzed. No lines were seen due to strong photoionization caused by the soft state of the source. Data given to the group of J. McClintock in order to help with the determination of the spin of the black hole from continuum fitting (paper submitted).

Cygnus X-1 Viewed Outside of its Secondary's Wind

PI: Michael A. Nowak, Co-Is: J. Wilms, M. Hanke, N. Schulz, C. Canizares, K. Pottschmidt, Chandra Guest Observer Program, AO11

Observation performed, analyzed, results presented at several conferences and in the PhD thesis of M. Hanke, refereed publication submitted (jointly with the AO9 observation).

Joint XMM-Newton/Chandra/RXTE Observations of Dips in Cyg X-1

PI: Jörn Wilms, CoIs: M.A. Nowak, K. Pottschmidt, S. Fritz, N.S. Schulz, C. Canizares, Chandra Guest Observer Program, AO9

Observation performed, analyzed, results presented at several conferences and in the PhD thesis of M. Hanke, refereed publication submitted (jointly with the AO11 observation).

Cygnus X-1: X-ray Dips, Distance, and the X-ray Halo

PI: Katja Pottschmidt, CoIs: J. Wilms, M.A. Nowak, J. Lee, R. McCray, A. Allen, P. Predehl, Chandra Guest Observer Program, 2002--2003.

Observation performed, two papers published, multiple conference posters.

3A 1954+319

Exposing the symbiosis of 3A 1954+319

PI: K. Pottschmidt

CoIs: D. M. Marcu, F. Fuerst, R. H. D. Corbet, C. B. Markwardt, J. Wilms, S. Suchy, R. E. Rothschild, and the MAGNET collaboration

observation performed in a very low luminosity state