*.htmlNotes for Q 0957+561

Notes for Q 0957+561

update: 5 July 1996

Detection method: Gravitational Lensing
Remarks: The object has been seen in the image A of the quasar 0957+561, lensed by a foreground galaxy at z = 0.39. Only the image A presents a lensing event: this excludes intrinsic variations in the quasar.
The parent star is not seen. This may be due because the amplification curve by a 1 solar mass object at 2.4 Gpc lasts many decades (~ 100 years).
References:
- SCHILD R., 1996
  Microlensing Variability of the Gravitationally Lensed Quasar Q0957+561 A,B
  ApJ., 464, 125

Distance: in anonymous galaxy at z=0.39
Coordinates (2000): RA = 10 01.3, DEC = +55 54
More data:
- Basic Data (from simbad )
- Most recent refs. (from ADS; enter `Q 0957+561' in the `objects' field)