Draft:Hagai Perets
Israeli astrophysicist, head of Israeli University Faculty Union, book author
From Wikipedia, the free encyclopedia
Hagai Binyamin Perets (Hebrew: חגי פרץ) is an Israeli theoretical astrophysicist and professor of physics at the Technion - Israel Institute of Technology. His research includes stellar and planetary dynamics, thermonuclear supernovae, gravitational-wave source channels, and statistical approaches to chaotic few-body dynamics. He is a recipient of a European Research Council Consolidator Grant (SNeX) and is listed as a Rothschild Fellow. Since 2023 he has served as chair of the Technion Faculty Association, and he is a member of several ULTRASAT science working groups.[1][2][3][4]
 | Review waiting, please be patient.
This may take 2 months or more, since drafts are reviewed in no specific order. There are 4,311 pending submissions waiting for review.
Where to get help
How to improve a draft
You can also browse Wikipedia:Featured articles and Wikipedia:Good articles to find examples of Wikipedia's best writing on topics similar to your proposed article. Improving your odds of a speedy review To improve your odds of a faster review, tag your draft with relevant WikiProject tags using the button below. This will let reviewers know a new draft has been submitted in their area of interest. For instance, if you wrote about a female astronomer, you would want to add the Biography, Astronomy, and Women scientists tags. Editor resources
Reviewer tools
|
Submission declined on 1 December 2025 by Pythoncoder (talk).
Where to get help
How to improve a draft
You can also browse Wikipedia:Featured articles and Wikipedia:Good articles to find examples of Wikipedia's best writing on topics similar to your proposed article. Improving your odds of a speedy review To improve your odds of a faster review, tag your draft with relevant WikiProject tags using the button below. This will let reviewers know a new draft has been submitted in their area of interest. For instance, if you wrote about a female astronomer, you would want to add the Biography, Astronomy, and Women scientists tags. Editor resources
This draft has been resubmitted and is currently awaiting re-review. |  |
Submission declined on 1 May 2025 by HickoryOughtShirt?4 (talk). This draft's references do not show that the person meets Wikipedia's criteria for inclusion for people. The draft requires multiple published secondary sources that:
Declined by HickoryOughtShirt?4 11 months ago.
| |
Comment: Wikipedia (even one from a different language) cannot be used as a source HickoryOughtShirt?4 (talk) 23:30, 1 May 2025 (UTC)
Hagai Perets | |
|---|---|
חגי פרץ |
Education and career
Perets earned a BA in mathematics and science at the Open University of Israel, an MSc in physics at the Hebrew University of Jerusalem, and a PhD in physics at the Weizmann Institute of Science (2009). After prize-fellow postdoctoral appointments at the Harvard-Smithsonian Center for Astrophysics (2009-2012), he joined the Technion faculty in 2012, where he is a professor in the Department of Physics.[5]
In 2019 he was awarded an ERC Consolidator Grant (SNeX: The origins of thermonuclear supernova explosions).[6] He is listed as a Rothschild Fellow by Yad Hanadiv.[7]
Since 2023, Perets has served as chair of the Technion Faculty Association.[8] He is listed among the science working groups of the ULTRASAT mission.[9]
Research
Thermonuclear supernovae
Perets led the discovery and characterization of a class of faint, fast thermonuclear transients with strong calcium features (calcium-rich supernovae), reporting SN 2005E and its properties in Nature (2010).[10] Subsequent work from his group provided a physical progenitor framework: Zenati, Perets and Dessart (2023) showed that disruptions of low-mass carbon-oxygen white dwarfs by hybrid helium-carbon-oxygen white dwarfs during mergers, reproduce the luminosities and nebular calcium dominance of Ca-rich events.[11]
He co-authored early models for Type Iax supernovae as partial-deflagration (failed-detonation) explosions of near-Chandrasekhar carbon-oxygen white dwarfs, predicting bound remnants and low-velocity ejecta.[12]
Technion-led work including Perets and collaborators has connected hypervelocity white dwarfs to double-detonation outcomes; these results were covered by Technion and science-news outlets in 2025.[13][14]
Gravitational-wave source channels
Perets co-authored the proposal that compact objects embedded in active galactic nucleus (AGN) accretion discs can migrate, interact and merge efficiently - producing gravitational-wave sources and fostering intermediate-mass black-hole growth.[15] Related work predicted mergers from compact binaries perturbed by massive black holes in galactic nuclei.[16] His group has also developed gas-assisted binary capture and hardening in gas-rich environments.[17]
Perets and co-authors derived a one-point (non-Gaussian) probability-distribution framework for the astrophysical stochastic gravitational-wave background.[18]
Three-body dynamics and triple evolution
Perets and his student Ginat presented an analytical, statistical description of outcome distributions in chaotic binary-single stellar encounters (dissipative and non-dissipative), published in Physical Review X.[19] Earlier, Perets and Kratter introduced the Triple-Evolution Dynamical Instability (TEDI), showing that mass-loss-driven destabilization in evolving triples can produce high collision rates and exotic binaries in the field.[20]
Planet formation and Solar-System dynamics
Perets’ research spans a wide range of problems in planetary formation and dynamics, with a particular focus on the early evolution of planetary systems. Working with E. Rufu and O. Aharonson, he put forward an alternative view of the Moon’s origin, suggesting it assembled from a succession of smaller “moonlets” produced by multiple large impacts, rather than a single event.[21] In collaboration with A. Mastrobuono-Battisti and S. Raymond, he further demonstrated that the striking compositional similarity between Earth and the Moon can emerge naturally from the statistics of late-stage planetary accretion.[22] His group has also contributed to broader questions in planetary dynamics, including how free-floating (“rogue”) planets may be captured within stellar clusters.[23]
Galactic-Centre dynamics
During his PhD studies, in the group of T. Alexander, he quantified how massive perturbers (e.g. giant molecular clouds and clusters) refill the loss cone of the Galactic Centre massive black hole, enhancing captures, tidal disruptions and binary separation/ejection near Sgr A*.[24]
Quantum and optical physics
Beyond astrophysics, Perets has studied several fields of physics. Specifically, Perets co-authored an experimental realization of quantum walks in photonic waveguide lattices, enabling large-scale, low-decoherence experiments that bridged the quantum-information and waveguide-lattice communities.[25]
Media and outreach
Literary career
Perets is a published poet and short-story writer. His poems have appeared in venues such as Gluya (גלויה) and BARD - Israel Association of Writers in English; a 2022 collection (הָרוּחַ מְשַׂחֶקֶת עַכְשָׁו, “The Wind Is Playing Now”) is listed by Hebrew literary outlets.[31][32][33] He received an honorary mention (Accésit) for Hebrew in the VII International Micro-Story Contest of the César Egido Serrano Foundation (Museum of the Word).[34]
Awards and honors
Selected publications
- H. B. Perets et al., “A faint type of supernova from a white dwarf with a helium-rich companion,” Nature 465 (2010) 322-325.[39]
- G. C. Jordan IV; H. B. Perets; R. T. Fisher; D. R. van Rossum, “Failed-Detonation Supernovae: Sub-Luminous Low-Velocity Ia Supernovae and Their Kicked Remnant White Dwarfs with Iron-Rich Cores,” The Astrophysical Journal Letters 761 (2012) L23.[40]
- Y. Zenati; H. B. Perets; L. Dessart, “The Origins of Calcium-rich Supernovae From Disruptions of Carbon-oxygen White Dwarfs by Hybrid Helium-carbon-oxygen White Dwarfs,” The Astrophysical Journal 944 (2023) 22.[41]
- B. McKernan; K. E. S. Ford; W. Lyra; H. B. Perets, “Intermediate mass black holes in AGN discs,” Monthly Notices of the Royal Astronomical Society 425 (2012) 460-469.[42]
- F. Antonini; H. B. Perets, “Secular Evolution of Compact Binaries near Massive Black Holes: Gravitational Wave Sources and Other Exotica,” The Astrophysical Journal 757 (2012) 27.[43]
- Y. B. Ginat; H. B. Perets, “Analytical, Statistical Approximate Solution of Dissipative and Nondissipative Binary-Single Stellar Encounters,” Physical Review X 11 (2021) 031020.[44]
- Y. B. Ginat; V. Desjacques; R. Reischke; H. B. Perets, “The Probability Distribution of Astrophysical Gravitational-Wave Background Fluctuations,” Physical Review D 102 (2020) 083501.[45]
- E. Rufu; O. Aharonson; H. B. Perets, “A multiple-impact origin for the Moon,” Nature Geoscience 10 (2017) 89-94.[46]
- M. Mastrobuono-Battisti; H. B. Perets; S. N. Raymond, “A primordial origin for the compositional similarity between the Earth and the Moon,” Nature 520 (2015) 212-215.[47]
- H. B. Perets et al., “Realization of Quantum Walks with Negligible Decoherence in Waveguide Lattices,” Physical Review Letters 100 (2008) 170506.[48]
LLM-generated pages with certain obvious signs of being machine generated may be deleted without notice.
These tools are prone to specific issues that violate our policies:
Instead, only summarize in your own words a range of independent, reliable, published sources that discuss the subject.
See the advice page on large language models for more information.