Peculiar Emission Line Generation from Ultra-Rapid Quasi-Periodic Oscillations of Exotic Astronomical Objects |
| |
| Authors: | E F Borra |
| |
| Institution: | 1.Département de Physique,Université Laval,Quebec,Canada |
| |
| Abstract: | The purpose of this article is to alert astronomers, particularly those using spectroscopic surveys, to the fact that exotic astronomical objects (e.g. quasars or active galactic nuclei) that send ultra-rapid quasi periodic pulses of optical light would generate spectroscopic features that look like emission lines. This gives a simple technique to find quasi periodic pulses separated by times smaller than a nanosecond. One should look for emission lines that cannot be identified with known spectral lines in spectra. Such signals, generated by slower pulses, could also be found in the far infra-red, millimeter and radio regions, where they could be detected as objects unusually bright in a single narrow-band filter or channel. The outstanding interest of the technique comes from its simplicity so that it can be used to find ultra-rapid quasi-periodic oscillators in large astronomical surveys. A very small fraction of objects presently identified as Lyman \(\alpha \) emitters that do not have other spectral features to confirm the Lyman \(\alpha \) redshift, may possibly be quasi-periodic oscillators. However this is only a hypothesis that needs more observations for confirmation. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
