Labels:text | screenshot | black and white OCR: Ser X-1 Image is public domain and may not be sold or changed. A nominal fee for disk material is acceptable. @ GR GR CCD-image of the Low-mass X-Ray Burster SER X-1 The image was obtained at the 2.2m telescope of the German/Spain Astronomical Center at Calar Alto (Spain) on July 7th 1986 , 22:26 UT on RCA-CCD-Chip with 512x336 pixel. Resolution is approx. 0."35 at a Observation time was 300s through Johnson-V filter. The apparent V-magnitude of Ser X-1 is appr. 19 mag seeing of approx 1". Low-mass X-ray Bursters (LMXRB's) are binary stars where the major component is a neutron star and the secondary is a late main sequence star. The ms-star is just enough developed to lose matter which flows through the inner Lagrange-point and accumulates in an accretion disk around the neutron star. From there the matter spirals in onto the neutron star (ns). Due to relativistic velocities of the matter X-radiation is produced when the matter hits the surface of the ns. The objects were first detected due to their high X-ray flux, which is up to 1000 times higher than their optical flux which comes from X-rays reprocessed in the disk. Nuclear runaways on the ns surface lead to bright bursts of radiation for some seconds. Optical lightcurves come from eclipses of the disk by the ms star or the disk.
