# Black Widow Pulsar

> pulsar in the constellation Sagitta

**Wikidata**: [Q2253763](https://www.wikidata.org/wiki/Q2253763)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Black_Widow_pulsar)  
**Source**: https://4ort.xyz/entity/black-widow-pulsar


## References

1. SIMBAD
2. Spectroscopy of the companion and bow-shock nebula of PSR 1957+20
3. Freebase Data Dumps. 2013
4. Gaia Early Data Release 3
5. The light curve of the companion to PSR B1957+20
6. Extrasolar Planets Encyclopaedia
7. An Optical Study of the Black Widow Population
8. Timing gamma-ray pulsars with the Fermi Large Area Telescope: timing noise and astrometry
9. Inferring the composition of super-Jupiter mass companions of pulsars with radio line spectroscopy