4U 0142+61
File:4U 0142+61 paint.jpg Artist's conception of 4U 0142+61 | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cassiopeia |
| Right ascension | Template:RA |
| Declination | Template:DEC |
| Apparent magnitude (V) | 25.62 |
| Characteristics | |
| B−V Template:Engvar | 0.63 |
| Variable type | Suspected |
| Astrometry | |
| Proper motion (μ) | RA: 26.58958 mas/yr Dec.: +61.75264 mas/yr |
| Details | |
| Radius | 16.1 km[1] Template:Solar radius |
| Luminosity | 0.63 Template:Solar luminosity |
| Rotation | Template:Val |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| PSR J0146+61, 1RXS J014621.5+614509 | |
| Database references | |
| SIMBAD | data |
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4U 0142+61 is a magnetar at an approximate distance of Template:Val from Earth, located in the constellation Cassiopeia.
In an article published in Nature on April 6, 2006, Deepto Chakrabarty et al. of MIT revealed that a circumstellar disk was discovered around the pulsar. This may prove that pulsar planets are common around neutron stars. The debris disk is likely to be composed of mainly heavier metals. The star had undergone a supernova event approximately 100,000 years ago. The disk orbits about 1.6 million kilometers away from the pulsar and probably contains about 10 Earth-masses of material.[2] This also marks the first time that a pulsar has been discovered with a debris disk orbiting it.[3]
In May 2022, the first study of this source by the IXPE space observatory hinted at the possibility of vacuum birefringence on 4U 0142+61.[4][5] This same study using IXPE also reported that the star may have a solid surface, with no atmosphere.[6][7]
References
External links
- First signs of weird quantum property of empty space? (November 30, 2016) Phys.org
- Scientists crack mystery of planet formation (April 5, 2006) CNN
- Spitzer Sees New Planet Disk Around Dead Star (April 7, 2006) SpaceDaily
- Birth of 'Phoenix' Planets?
- 4U0142+61
- 1RXS J014621.5+614509
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