Loading...
Please wait, while we are loading the content...
Similar Documents
Magnetars: challenging the extremes of nature
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kouveliotou, Chryssa |
| Copyright Year | 2011 |
| Description | Magnetars are magnetically powered rotating neutron stars with extreme magnetic fields (over 10(exp 14) Gauss). They are discovered and emit predominantly in the X- and gamma-rays. Very few sources (roughly 15) have been found since their discovery in 1987. NASA s Fermi Observatory was launched June 11, 2009; the Fermi Gamma Ray Burst Monitor (GBM) began normal operations on July 14, about a month after launch, when the trigger algorithms were enabled. Since then, we recorded emission from four magnetar sources; of these, only one was an old magnetar: SGR 1806+20. The other three detections were two brand new sources, SGR J0501+4516, discovered with Swift and extensively monitored with both Swift and GBM, SGR J0418+5729, discovered with GBM and the Interplanetary Network (IPN), and SGR J1550-5418, a source originally classified as an Anomalous X-ray Pulsar (AXP 1E1547.0-5408). In my talk I will give a short history of the discovery of magnetars and describe how this, once relatively esoteric field, has emerged as a link between several astrophysical areas including Gamma-Ray Bursts. Finally, I will describe the properties of these sources and the current status of our knowledge of the magnetar population and birth rate. |
| File Size | 24232 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20120016413 |
| Archival Resource Key | ark:/13960/t1jh8jd7m |
| Language | English |
| Publisher Date | 2011-07-26 |
| Access Restriction | Open |
| Subject Keyword | Astrophysics Actuators Observatories Neutron Stars X Rays Algorithms Pulsars Stellar Rotation Magnetars Magnetic Fields Gamma Ray Bursts Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
