| Term | Definition | Contributor | Modified |
|---|---|---|---|
| x-ray flare class | Rank of a flare based on its x-ray energy output. Flares are classified by the NOAA according to the order of magnitude of the peak burst intensity (I) measured at the Earth by satellites in the 0.1 t o 0.8 nm band as follows: Peak, 0.1 to 0.8 nm flux (W m-2) B I < 10-6 C 10-6 <= I < 10-5 M 10-5 <= I < 10-4 X I>= 10-4 A multiplicative factor is appended to the end of the class (e.g. M8 = 8 x 10-5 W m-2) | Ryan McGranaghan | 2023.04.16 |
| x-ray flare termination | The end time is defined as the time the flux has decayed to 1/2 the peak flux of the event. | Ryan McGranaghan | 2023.04.16 |
| X-ray identification | No definition provided | Ryan McGranaghan | 2023.04.16 |
| X-ray, neutron, and electron spectroscopy and diffraction | No definition provided | Ryan McGranaghan | 2023.04.16 |
| X-ray novae | No definition provided | Ryan McGranaghan | 2023.04.16 |
| X-ray novae | No definition provided | Ryan McGranaghan | 2023.04.16 |
| X-ray novae | No definition provided | Ryan McGranaghan | 2023.04.16 |
| X-ray novae | No definition provided | Ryan McGranaghan | 2023.04.16 |
| X-ray observatories | No definition provided | Ryan McGranaghan | 2023.04.16 |
| X-ray photography | No definition provided | Christopher Rauch | 2023.12.01 |
| X-ray photometry | No definition provided | Ryan McGranaghan | 2023.04.16 |
| X-ray point sources | No definition provided | Ryan McGranaghan | 2023.04.16 |
| X-ray quasars | No definition provided | Ryan McGranaghan | 2023.04.16 |
| X-ray quasars | No definition provided | Ryan McGranaghan | 2023.04.16 |
| X-ray quasars | No definition provided | Ryan McGranaghan | 2023.04.16 |
| X-ray quasars | No definition provided | Ryan McGranaghan | 2023.04.16 |
| X-ray quasars | No definition provided | Ryan McGranaghan | 2023.04.16 |
| X-rays | No definition provided | Christopher Rauch | 2023.12.01 |
| XRays | Photons with a wavelength range: 0.001 <=x < 10 nm. | Ryan McGranaghan | 2023.04.16 |
| X-rays--Bibl | No definition provided | Christopher Rauch | 2023.12.01 |