355 citations · 1.6k across the 42 of their papers we have counts for
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It's always the quiet ones: Single Degenerate Double Detonation Type Ia Supernova from Quiescent Helium Accretion
Amir Michaelis, Yael Hillman, Hagai B. Perets
We investigate a sub-Chandrasekhar mass double detonation pathway for Type Ia supernovae arising from single degenerate helium accreting carbon-oxygen white dwarfs. Building on our…
Faint supernovae and hyper-runaway white-dwarfs from single He-detonation in double HeCO-white-dwarf mergers
Hila Glanz, Hagai B. Perets, Aakash Bhat
We present three-dimensional hydrodynamical simulations of mergers between low-mass hybrid HeCO white dwarfs (WDs), offering new insights into the diversity of thermonuclear transi…
The origin of hypervelocity white dwarfs in the merger-disruption of He-CO white dwarfs
Hila Glanz, Hagai B. Perets, Aakash Bhat +1
Hypervelocity white dwarfs (HVWDs) are stellar remnants moving at speeds exceeding the Milky Way's escape velocity. The origins of the fastest HVWDs are enigmatic, with proposed fo…
The formation of mini-AGN disks around IMBHs and their dynamical implications
Mor Rozner, Alessandro A. Trani, Johan Samsing +1
This study explores the formation and implications of mini-active galactic nuclei (mAGN) disks around intermediate-mass black holes (IMBHs) embedded in gas-rich globular/nuclear cl…
Soft no more: gas shielding protects soft binaries from disruption in gas-rich environments
Mor Rozner, Hagai B. Perets
Binaries in dense environments are traditionally classified as soft or hard based on their binding energy relative to the kinetic energy of surrounding stars. Heggie's law suggests…
Upper Limits of Ti Decay Emission in Four Nearby Thermonuclear Supernova Remnants
Jianbin Weng, Ping Zhou, Hagai B. Perets +2
To identify progenitors and investigate evidence of He burning, we searched for decay radiation of freshly synthesized Ti in four young nearby thermonuclear supernova remnan…
Using Ti Emission to Differentiate Between Thermonuclear Supernova Progenitors
Daniel Kosakowski, Mark Ivan Ugalino, Robert Fisher +3
The radiosotope Ti is produced through -rich freezeout and explosive helium burning in type Ia supernovae (SNe Ia). In this paper, we discuss how the detection of …
The origins of Calcium-rich supernovae from disruptions of CO white-dwarfs by hybrid He-CO white-dwarfs
Yossef Zenati, Hagai B. Perets, Luc Dessart +3
Calcium-rich (SN 2005E-like) explosions are very faint (typical -15.5, type I supernovae (SNe) showing strong Ca-lines, mostly observed in old stellar environments. Several models…
The Late-Time Light Curves of Type Ia Supernovae: Confronting Models with Observations
Vishal Tiwari, Or Graur, Robert Fisher +5
Type Ia supernovae (SNe Ia) play a crucial role as standardizable candles in measurements of the Hubble constant and dark energy. Increasing evidence points towards multiple possib…
Analytic Modelling of Binary-Single Encounters: Non-Thermal Eccentricity Distribution and Gravitational-Wave Source Formation
Yonadav Barry Ginat, Hagai Perets
Chaotic three-body interactions may lead to the formation of gravitational-wave sources. Here, by modelling the encounter as a series of close, non-hierarchical, triple approaches,…
Detailed properties of gravitational-wave mergers from flyby perturbations of wide binary black holes in the field
Yael Raveh, Erez Michaely, Hagai Binyamin Perets
Wide black hole binaries (wide-BBHs; AU) in the field can be perturbed by random stellar flybys that excite their eccentricities. Once a wide binary is driven to a…
The Circumstellar Environments of Double-Peaked, Calcium-strong Supernovae 2021gno and 2021inl
Wynn Jacobson-Galán, Padma Venkatraman, Raffaella Margutti +42
We present panchromatic observations and modeling of calcium-strong supernovae (SNe) 2021gno in the star-forming host galaxy NGC 4165 (D = 30.5 Mpc) and 2021inl in the outskirts of…
Binary evolution, gravitational-wave mergers and explosive transients in multiple-populations gas-enriched globular-clusters
Mor Rozner, Hagai B. Perets
Most globular clusters (GCs) show evidence for multiple stellar populations, suggesting the occurrence of several distinct star-formation episodes. The large fraction of second pop…
Spatially Resolved X-ray Study of Supernova Remnant G306.30.9 with Unusually High Calcium Abundance
Jianbin Weng, Ping Zhou, Yang Chen +6
G306.30.9 is an asymmetric Galactic supernova remnant (SNR), whose progenitor has been thought to be a Type Ia supernova (SN), but its high Ca abundance appears inconsistent wit…
High rate of gravitational waves mergers from flyby perturbations of wide black-hole triples in the field
Erez Michaely, Hagai G. Perets
Ultra-wide triple black-holes (TBHs; with an outer orbit AU) in the field can be considerably perturbed by flyby encounters with field stars by the excitation of the outer…
Rates of Stellar Tidal Disruption
Nicholas C. Stone, Eugene Vasiliev, Michael Kesden +3
Tidal disruption events occur rarely in any individual galaxy. Over the last decade, however, time-domain surveys have begun to accumulate statistical samples of these flares. What…
The rate of WD-WD head-on collisions in isolated triples is too low to explain standard type Ia supernovae
S. Toonen, H. B. Perets, A. S. Hamers
Type Ia supernovae (Ia-SNe) are thought to arise from the thermonuclear explosions of white dwarfs (WDs). The progenitors of such explosions are still highly debated; in particular…
The Fast and Furious Decay of the Peculiar Type Ic Supernova 2005ek
M. R. Drout, A. M. Soderberg, P. A. Mazzali +21
We present extensive multi-wavelength observations of the extremely rapidly declining Type Ic supernova, SN 2005ek. Reaching a peak magnitude of M_R = -17.3 and decaying by ~3 mag…