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Characterization of the inner knot of the crab: the site of the gamma-ray flares? (Document No: 20140017726)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Weisskopf, M. C. |
| Copyright Year | 2014 |
| Description | Subsequent to the detections AGILE and Fermi/LAT of the gamma-ray flares from the Crab Nebula in the fall of 2010, this team has been monitoring the X-Ray emission from the Crab on a regular basis. Initially X-Ray observations took place once per month when viewing constraints allowed. More recently observations with Chandra and HST have taken place four times per year. There have been notable exceptions, e.g. in April of 2011 and March 2013 when we initiated a set of Chandra Target of opportunity observations in conjunction with bright gamma-ray flares. Often Keck observations were obtained. The aim of this program to characterize, in depth, the X-ray, optical, and infrared variations that take place in the nebula, and, by so doing, determine the regions which contribute to the harder X-ray variations and, if possible, determine the precise location within the Nebula of the origin of the gamma-ray flares. As part of this project members of the team have applied Singular Value Decomposition techniques to sequences of images in order to more accurately characterize features and their behavior. The current status of the project will be discussed highlighting studies of the inner knot and possible correlations with the gamma-ray flares. |
| File Size | 160873 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20140017726 |
| Archival Resource Key | ark:/13960/t22c41649 |
| Language | English |
| Publisher Date | 2014-11-18 |
| Access Restriction | Open |
| Subject Keyword | Chandra Image Processing Time Series Analysis Crab Nebula Infrared Astronomy Radiant Flux Density Stellar Flares Characterization Infrared Telescopes Pulsars Astronomical Models Hubble Space Telescope X Ray Astronomy Fermi Gamma-ray Space Telescope Gamma Ray Sources Astronomy Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Presentation |
