GW170817: Difference between revisions
Content deleted Content added
added => * [http://ligo.org/detections.php Detections] – LIGO |
added {{cn|date=August 2017}} template - as follows => including one{{citation needed|date=August 2017}} that referred to "GW170818" |
||
| Line 6: | Line 6: | ||
|title=A very exciting LIGO-Virgo Observing run is drawing to a close August 25 [2017] |url=http://www.ligo.org/news/index.php#O2end |date=25 August 2017 |work=[[LIGO]] |accessdate=29 August 2017 }}</ref> |
|title=A very exciting LIGO-Virgo Observing run is drawing to a close August 25 [2017] |url=http://www.ligo.org/news/index.php#O2end |date=25 August 2017 |work=[[LIGO]] |accessdate=29 August 2017 }}</ref> |
||
The first public information was tweeted by astronomer J. Craig Wheeler of the [[University of Texas at Austin]]. He later deleted the tweet and apologized. Others have followed up, and reported that the public logs of several major telescopes list priority interrupts in order to observe [[NGC 4993]], a galaxy {{convert|40|Mpc|Mly|abbr=on|lk=on}} away in the [[Hydra (constellation)|Hydra constellation]], including one that referred to "GW170818".<ref name="NAT-20170825">{{cite news |last=Casttelvecchi |first=Davide |title=Rumours swell over new kind of gravitational-wave sighting |url=https://www.nature.com/news/rumours-swell-over-new-kind-of-gravitational-wave-sighting-1.22482 |date=25 August 2017 |publisher=[[Nature (journal)|Nature News]] |doi=10.1038/nature.2017.22482 |accessdate=27 August 2017 }}</ref><ref name="NS-20170823">{{cite news |last=McKinnon |first=Mika |title=Exclusive: We may have detected a new kind of gravitational wave |url=https://www.newscientist.com/article/2144937-exclusive-we-may-have-detected-a-new-kind-of-gravitational-wave/ |date=23 August 2017 |work=[[New Scientist]] |accessdate=28 August 2017 }}</ref> |
The first public information was tweeted by astronomer J. Craig Wheeler of the [[University of Texas at Austin]]. He later deleted the tweet and apologized. Others have followed up, and reported that the public logs of several major telescopes list priority interrupts in order to observe [[NGC 4993]], a galaxy {{convert|40|Mpc|Mly|abbr=on|lk=on}} away in the [[Hydra (constellation)|Hydra constellation]], including one {{cn|date=August 2017}} that referred to "GW170818".<ref name="NAT-20170825">{{cite news |last=Casttelvecchi |first=Davide |title=Rumours swell over new kind of gravitational-wave sighting |url=https://www.nature.com/news/rumours-swell-over-new-kind-of-gravitational-wave-sighting-1.22482 |date=25 August 2017 |publisher=[[Nature (journal)|Nature News]] |doi=10.1038/nature.2017.22482 |accessdate=27 August 2017 }}</ref><ref name="NS-20170823">{{cite news |last=McKinnon |first=Mika |title=Exclusive: We may have detected a new kind of gravitational wave |url=https://www.newscientist.com/article/2144937-exclusive-we-may-have-detected-a-new-kind-of-gravitational-wave/ |date=23 August 2017 |work=[[New Scientist]] |accessdate=28 August 2017 }}</ref> |
||
==Astrophysical origin== |
==Astrophysical origin== |
||
Revision as of 18:56, 29 August 2017
 The GW170817 signal as measured by the LIGO and Virgo gravitational wave detectors. Signal is invisible in the Virgo data | |
| Event type | Gravitational wave event  |
|---|---|
| Distance | 40.7 Mpc (133,000,000 ly) |
| Redshift | 0.0099 |
| Total energy output | ≈ |
| Other designations | GW170817 |
 Related media on Commons | |
GW170818 is a tentative name for a gravitational wave signal rumored to have been observed by the LIGO/Virgo collaboration on 18 August 2017, and to have an optical counterpart. The collaboration has declined to comment on the rumors, not adding to a previous announcement that there were seven triggers under analysis.[1]
The first public information was tweeted by astronomer J. Craig Wheeler of the University of Texas at Austin. He later deleted the tweet and apologized. Others have followed up, and reported that the public logs of several major telescopes list priority interrupts in order to observe NGC 4993, a galaxy 40 Mpc (130 Mly) away in the Hydra constellation, including one [citation needed] that referred to "GW170818".[2][3]
Astrophysical origin
Preliminary suggestions may indicate that the gravitational wave event, reportedly detected on 18 August 2017, was associated with the collision of two neutron stars.[2][3][4][5] This stellar collision may be related to a gamma ray burst, named GRB 170817A, that was detected earlier, on 17 August 2017.[5]
See also
References
- ^ Staff (25 August 2017). "A very exciting LIGO-Virgo Observing run is drawing to a close August 25 [2017]". LIGO. Retrieved 29 August 2017.
- ^ a b Casttelvecchi, Davide (25 August 2017). "Rumours swell over new kind of gravitational-wave sighting". Nature News. doi:10.1038/nature.2017.22482. Retrieved 27 August 2017.
- ^ a b McKinnon, Mika (23 August 2017). "Exclusive: We may have detected a new kind of gravitational wave". New Scientist. Retrieved 28 August 2017.
- ^ Sokol, Joshua (25 August 2017). "What Happens When Two Neutron Stars Collide?". Wired (magazine). Retrieved 27 August 2017.
- ^ a b Drake, Nadia (25 August 2017). "Strange Stars Caught Wrinkling Spacetime? Get the Facts". National Geographic (magazine). Retrieved 27 August 2017.
External links
2017 in space | ||
|---|---|---|
Space probe launches  |
|    |
| Impact events | ||
| Selected NEOs | ||
| Exoplanets | ||
| Discoveries | ||
| Comets | ||
| Space exploration |
| |
