| タイトル | Radio and X-Ray Observations of SN 2006jd: Another Strongly Interacting Type IIn Supernova |
| 本文（外部サイト） | http://hdl.handle.net/2060/20130012582 |
| 著者（英） | Chakraborti, Sayan; Fransson, Claes; Soderberg, Alicia M.; Chevalier, Roger A.; Immler, Stefan; Irwin, Christopher M.; Chugai, Nikolai; Chandra, Poonam |
| 著者所属（英） | Royal Military Coll. of Canada |
| 発行日 | 2012-01-01 |
| 言語 | eng |
| 内容記述 | We report four years of radio and X-ray monitoring of the Type IIn supernova SN 2006jd at radio wavelengths with the Very Large Array, Giant Metrewave Radio Telescope and Expanded Very Large Array at X-ray wavelengths with Chandra, XMM-Newton and Swift-XRT. We assume that the radio and X-ray emitting particles are produced by shock interaction with a dense circumstellar medium. The radio emission shows an initial rise that can be attributed to free-free absorption by cool gas mixed into the nonthermal emitting region external free-free absorption is disfavored because of the shape of the rising light curves and the low gas column density inferred along the line of sight to the emission region. The X-ray luminosity implies a preshock circumstellar density approximately 10(exp 6) per cubic meter at a radius r approximately 2 x 10(exp 16) centimeter, but the column density inferred from the photoabsorption of X-rays along the line of sight suggests a significantly lower density. The implication may be an asymmetry in the interaction. The X-ray spectrum shows Fe line emission at 6.9 keV that is stronger than is expected for the conditions in the X-ray emitting gas. We suggest that cool gas mixed into the hot gas plays a role in the line emission. Our radio and X-ray data both suggest the density profile is flatter than r2 because of the slow evolution of the unabsorbed emission. |
| NASA分類 | Astronomy |
| レポートNO | GSFC-E-DAA-TN6676 |
| 権利 | Copyright, Distribution under U.S. Government purpose rights |
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