296 citations · 753 across the 27 of their papers we have counts for
27 papers
Recoil-regulated extreme mass-ratio inspirals in AGN disks
LingQin Xue, Zoltán Haiman, Hiromichi Tagawa +1
Extreme mass-ratio inspirals (EMRIs) are among the primary targets of future space-based gravitational-wave observatories, such as LISA, TianQin, and Taiji. Active galactic nucleus…
A new sample of Little Red Dots at in DESI DR1: Broad Balmer lines, low ionization spectrum and no variability
Kevin Park, Alberto Torralba, Jorryt Matthee +4
JWST has unveiled an abundant population of compact broad-line emitters largely at , the Little Red Dots (LRDs), which might represent a previously unprobed supermassive…
High-Spin BBH Subpopulation from AGN Accretion
I. Bartos, Z. Haiman
The formation environments of merging binary black holes remain uncertain. While hierarchical assembly in dense stellar clusters has been widely explored as an explanation for blac…
Plato's view on supermassive black hole binaries: Exploring the faint limit of ESA's Plato space mission
Nicholas Jannsen, Pablo Huijse, Kevin Park +3
The search for supermassive black hole binaries (SMBHBs) has, in recent years, seen the dawn of exploration with several hundred candidates claimed from photometric and spectroscop…
Statistical evidence for massive black hole recoils in active galactic nuclei
Bence Bécsy, Peter Raffai, Zoltán Haiman +2
We search for a population-level signature of gravitational-wave recoiling supermassive black holes: a positive correlation between dust obscuration and the magnitude of the line-o…
Properties of black hole mergers in disks of active galactic nuclei
Hiromichi Tagawa, Zoltán Haiman, Bence Kocsis
Ground-based gravitational wave (GW) observatories have detected approximately 200 binary black hole (BH) mergers. The astrophysical origin of these events are debated, with eviden…
Electromagnetic Flares from Compact-Object Mergers in AGN Disks: Signatures and Predictions
Hiromichi Tagawa, Zoltán Haiman, Shigeo S. Kimura +2
Accretion disks in active galactic nuclei (AGN) are promising sites for mergers of stellar-mass black holes (BHs) detectable via gravitational waves (GWs). These environments facil…
Probing Cosmology through Higher-Order CMB Lensing Statistics
Shu-Fan Chen, J. Colin Hill, Zoltán Haiman
We investigate the cosmological information in higher-order statistics of the cosmic microwave background (CMB) lensing convergence field for a near-term experiment with noise prop…
The impact of baryons on weak lensing statistics as a function of halo mass and radius
Max E. Lee, Zoltan Haiman, Shy Genel
Upcoming weak lensing (WL) surveys such as those by {\it Euclid}, LSST, and {\it Roman} require percent-level control over systematic effects. A common approach to mitigating baryo…
LISA and the LISA Science Team
Anna Heffernan, Chiara Caprini, Neil Cornish +19
LISA, the Laser Interferometer Space Antenna, due to launch mid-2035, is a large class space mission by the European Space Agency (ESA). In partnership with NASA and ESA-member sta…
Self-lensing flares from black hole binaries V: systematic searches in LSST
Kevin Park, Zoltan Haiman, Chengcheng Xin +3
The Vera C. Rubin Observatory has now seen first light, and over a 10 year duration, LSST is projected to catalogue tens of millions of quasars, many of which are expected to be as…
Reconstructing the origin of black hole mergers using sparse astrophysical models
V. Gayathri, Giuliano Iorio, Hiromichi Tagawa +8
The astrophysical origin of binary black hole mergers discovered by LIGO and Virgo remains uncertain. Efforts to reconstruct the processes that lead to mergers typically rely on ei…
Triples as Links between Binary Black Hole Mergers, their Electromagnetic Counterparts, and Galactic Black Holes
Smadar Naoz, Zoltan Haiman, Eliot Quataert +1
We propose a formation pathway linking black holes (BHs) observed in gravitational-wave (GW) mergers, wide BH-stellar systems uncovered by Gaia, and accreting low-mass X-ray binari…
Accretion is All You Need: Black Hole Spin Alignment in Merger GW231123 Indicates Accretion Pathway
Imre Bartos, Zoltan Haiman
GW231123 represents the most massive binary-black-hole merger detected to date, lying firmly within, or even above, the pair-instability mass gap. The component spins are both exce…
What Determines the Maximum Mass of AGN-assisted Black Hole Mergers?
LingQin Xue, Hiromichi Tagawa, Zoltan Haiman +1
The origin of merging binary black holes detected through gravitational waves remains a fundamental question in astrophysics. While stellar evolution imposes an upper mass limit of…
Testing compact massive black hole binary candidates through multi-epoch spectroscopy
Lorenzo Bertassi, Erika Sottocorno, Fabio Rigamonti +4
Emission from two massive black holes (MBHs) bound in a close binary is expected to be modulated by different processes, such as the Doppler boost due to the orbital motion, accret…
Thermal X-ray signatures in late-stage unequal-mass massive black hole binary mergers
Luke Major Krauth, Jordy Davelaar, Zoltán Haiman +3
The multi-messenger combination of gravitational waves (GWs) from merging massive black hole binaries (MBHBs) and the electromagnetic (EM) counterpart from the surrounding circumbi…
Suppressed accretion onto massive black hole binaries surrounded by thin disks
Christopher Tiede, Jonathan Zrake, Andrew MacFadyen +1
We demonstrate that gas disks around binary systems might deliver gas to the binary components only when the circumbinary disk is relatively warm. We present new grid-based hydrody…
Self-lensing flares from black hole binaries IV: the number of detectable shadows
Kevin Park, Chengcheng Xin, Jordy Davelaar +1
Sub-parsec supermassive black hole (SMBH) binaries are expected to be common in active galactic nuclei (AGN), as a result of the hierarchical build-up of galaxies via mergers. Whil…
Time-dependent models of AGN disks with radiation from embedded stellar-mass black holes
Marguerite Epstein-Martin, Hiromichi Tagawa, Zoltan Haiman +1
The brightest steady sources of radiation in the universe, active galactic nuclei (AGN), are powered by gas accretion onto a central supermassive black hole (SMBH). The large sizes…
Shock cooling and breakout emission for optical flares associated with gravitational wave events
Hiromichi Tagawa, Shigeo S. Kimura, Zoltán Haiman +2
The astrophysical origin of stellar-mass black hole (BH) mergers discovered through gravitational waves (GWs) is widely debated. Mergers in the disks of active galactic nuclei (AGN…
Black Hole Binaries in AGN Accretion Discs II: Gas Effects on Black Hole Satellite Scatterings
Connar Rowan, Henry Whitehead, Tjarda Boekholt +2
The black hole (BH) binaries in active galactic nuclei (AGN) are expected to form mainly through scattering encounters in the ambient gaseous medium. Recent simulations, including…
Cosmic Evolution of Stellar-mass Black Hole Merger Rate in Active Galactic Nuclei
Y. Yang, I. Bartos, Z. Haiman +3
Binary black hole mergers encode information about their environment and the astrophysical processes that led to their formation. Measuring the redshift dependence of their merger…
GW170817A as a Hierarchical Black Hole Merger
V. Gayathri, I. Bartos, Z. Haiman +4
Despite the rapidly growing number of stellar-mass binary black hole mergers discovered through gravitational waves, the origin of these binaries is still not known. In galactic ce…