| タイトル | A deep ROSAT observation of the highly variable AGN 1E1403+5439 or ROSAT non-detection of the weak AGN 1E1403+5439 |
| 著者（英） | Belloni, T.; Snowden, S. L. |
| 著者所属（英） | Max-Planck-Inst. fuer Extraterrestrische Physik |
| 発行日 | 1992-03-01 |
| 言語 | eng |
| 内容記述 | A long (33600 s) Rosat Position Sensitive Proportional Counter observation of the galaxy M101 was performed. The field includes the serendipitous Einstein source 1E1403 + 5439, which was previously observed to vary by a factor 5.5 in 160 days. Despite the higher sensitivity of the Rosat PSPC and the high exposure time, the source could not be detected down to a much lower flux limit than the lowest Einstein detection. The unusually high variability and the proximity (18 feet) to M101 make this source a good candidate for gravitational microlensing. |
| NASA分類 | ASTRONOMY |
| レポートNO | 93N17122 |
| 権利 | Copyright, Distribution within the U.S. granted by agreement |
