Editing Supernova (section)

===Gravitational waves===
Supernovae are potentially strong galactic sources of [[gravitational wave]]s,<ref>
{{Cite journal
 |last1=Ott |first1=C. D.
 |last2=O'Connor |first2=E. P.
 |last3=Gossan |first3=S. E.
 |last4=Abdikamalov |first4=E.
 |last5=Gamma |first5=U. C. T.
 |last6=Drasco |first6=S.
 |year=2012
 |title=Core-Collapse Supernovae, Neutrinos, and Gravitational Waves
 |journal=[[Nuclear Physics B: Proceedings Supplements]]
 |volume=235 |pages=381–387
 |arxiv=1212.4250
 |bibcode=2013NuPhS.235..381O
 |doi=10.1016/j.nuclphysbps.2013.04.036
|s2cid=34040033
 }}</ref> but none have so far been detected. The only gravitational wave events so far detected are from mergers of black holes and neutron stars, probable remnants of supernovae.<ref name=morozova>{{cite journal|bibcode=2018ApJ...861...10M|doi=10.3847/1538-4357/aac5f1|title=The Gravitational Wave Signal from Core-collapse Supernovae|journal=The Astrophysical Journal|volume=861|issue=1|pages=10|year=2018|last1=Morozova|first1=Viktoriya|last2=Radice|first2=David|last3=Burrows|first3=Adam|last4=Vartanyan|first4=David|arxiv=1801.01914|s2cid=118997362 |doi-access=free }}</ref> Like the neutrino emissions, the gravitational waves produced by a core-collapse supernova are expected to arrive without the delay that affects light. Consequently, they may provide information about the core-collapse process that is unavailable by other means. Most gravitational-wave signals predicted by supernova models are short in duration, lasting less than a second, and thus difficult to detect. Using the arrival of a neutrino signal may provide a trigger that can identify the time window in which to seek the gravitational wave, helping to distinguish the latter from background noise.<ref>{{Cite journal |last1=Al Kharusi |first1=S. |last2=BenZvi |first2=S. Y. |last3=Bobowski |first3=J. S. |last4=Bonivento |first4=W. |last5=Brdar |first5=V. |last6=Brunner |first6=T. |last7=Caden |first7=E. |last8=Clark |first8=M. |last9=Coleiro |first9=A. |last10=Colomer-Molla |first10=M. |last11=Crespo-Anadón |first11=J. I. |last12=Depoian |first12=A. |last13=Dornic |first13=D. |last14=Fischer |first14=V. |last15=Franco |first15=D. |display-authors=14 |date=2021-03-01 |title=SNEWS 2.0: a next-generation supernova early warning system for multi-messenger astronomy |url=https://iopscience.iop.org/article/10.1088/1367-2630/abde33 |journal=New Journal of Physics |volume=23 |issue=3 |pages=031201 |doi=10.1088/1367-2630/abde33 |arxiv=2011.00035 |bibcode=2021NJPh...23c1201A |s2cid=226227393 |issn=1367-2630}}</ref>