OOIR: Observatory of International Research

Papers

(The H4-Index of Astrophysical Journal Letters is 67. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2020-11-01 to 2024-11-01.)

Article	Citations
A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km s⁻¹ Mpc⁻¹ Uncertainty from the Hubble Space Telescope and the SH0ES Team	910
First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way	754
The Radius of PSR J0740+6620 from NICER and XMM-Newton Data	678
A NICER View of the Massive Pulsar PSR J0740+6620 Informed by Radio Timing and XMM-Newton Spectroscopy	658
Population Properties of Compact Objects from the Second LIGO–Virgo Gravitational-Wave Transient Catalog	573
The NANOGrav 12.5 yr Data Set: Search for an Isotropic Stochastic Gravitational-wave Background	553
Cosmic Distances Calibrated to 1% Precision with Gaia EDR3 Parallaxes and Hubble Space Telescope Photometry of 75 Milky Way Cepheids Confirm Tension with ΛCDM	543
The NANOGrav 15 yr Data Set: Evidence for a Gravitational-wave Background	522
Refined Mass and Geometric Measurements of the High-mass PSR J0740+6620	507
Observation of Gravitational Waves from Two Neutron Star–Black Hole Coalescences	503
Search for an Isotropic Gravitational-wave Background with the Parkes Pulsar Timing Array	417
First M87 Event Horizon Telescope Results. VIII. Magnetic Field Structure near The Event Horizon	347
First Sagittarius A* Event Horizon Telescope Results. VI. Testing the Black Hole Metric	293
A Luminous Quasar at Redshift 7.642	282
The NANOGrav 15 yr Data Set: Search for Signals from New Physics	280
First Sagittarius A* Event Horizon Telescope Results. V. Testing Astrophysical Models of the Galactic Center Black Hole	269
On the Evidence for a Common-spectrum Process in the Search for the Nanohertz Gravitational-wave Background with the Parkes Pulsar Timing Array	247
First M87 Event Horizon Telescope Results. VII. Polarization of the Ring	233
Constraints on the Dense Matter Equation of State and Neutron Star Properties from NICER’s Mass–Radius Estimate of PSR J0740+6620 and Multimessenger Observations	225
Two Remarkably Luminous Galaxy Candidates at z ≈ 10–12 Revealed by JWST	224
First Sagittarius A* Event Horizon Telescope Results. III. Imaging of the Galactic Center Supermassive Black Hole	224
PSR J0952−0607: The Fastest and Heaviest Known Galactic Neutron Star	222
CEERS Key Paper. I. An Early Look into the First 500 Myr of Galaxy Formation with JWST	213
Parallax Systematics and Photocenter Motions of Benchmark Eclipsing Binaries in Gaia EDR3	198
A Long Time Ago in a Galaxy Far, Far Away: A Candidate z ∼ 12 Galaxy in Early JWST CEERS Imaging	189

Early Results from GLASS-JWST. III. Galaxy Candidates at z ∼9–15*	180
First Sagittarius A* Event Horizon Telescope Results. II. EHT and Multiwavelength Observations, Data Processing, and Calibration	180
First Sagittarius A* Event Horizon Telescope Results. IV. Variability, Morphology, and Black Hole Mass	178
A Test of the Cosmological Principle with Quasars	155
A Nearby Repeating Fast Radio Burst in the Direction of M81	148
The NANOGrav 15 yr Data Set: Constraints on Supermassive Black Hole Binaries from the Gravitational-wave Background	146
The JWST Early Release Observations	142
A Circumplanetary Disk around PDS70c	140
Discovery of the Pure Polycyclic Aromatic Hydrocarbon Indene (c-C9H8) with GOTHAM Observations of TMC-1	122
Black Hole Flares: Ejection of Accreted Magnetic Flux through 3D Plasmoid-mediated Reconnection	120
The NANOGrav 15 yr Data Set: Observations and Timing of 68 Millisecond Pulsars	119
LOFAR Detection of 110–188 MHz Emission and Frequency-dependent Activity from FRB 20180916B	111
CEERS Epoch 1 NIRCam Imaging: Reduction Methods and Simulations Enabling Early JWST Science Results	110
A CEERS Discovery of an Accreting Supermassive Black Hole 570 Myr after the Big Bang: Identifying a Progenitor of Massive z > 6 Quasars	107
Investigating Cosmic Discordance	106
The Pair-instability Mass Gap for Black Holes	103
Hidden Little Monsters: Spectroscopic Identification of Low-mass, Broad-line AGNs at z > 5 with CEERS	99
GW190521 May Be an Intermediate-mass Ratio Inspiral	94
Evidence for Hierarchical Black Hole Mergers in the Second LIGO–Virgo Gravitational Wave Catalog	92
The Parallax of ω Centauri Measured from Gaia EDR3 and a Direct, Geometric Calibration of the Tip of the Red Giant Branch and the Hubble Constant	91
Minding the Gap: GW190521 as a Straddling Binary	90
The Most Ordinary Formation of the Most Unusual Double Black Hole Merger	89
On the Sound Speed in Neutron Stars	87
On the Nature of GW190814 and Its Impact on the Understanding of Supranuclear Matter	86
Rotation Measure Evolution of the Repeating Fast Radio Burst Source FRB 121102	84
CEERS Spectroscopic Confirmation of NIRCam-selected z ≳ 8 Galaxy Candidates with JWST/NIRSpec: Initial Characterization of Their Properties	82
Toward a Better Understanding of Cosmic Chronometers: A New Measurement of H(z) at z ∼ 0.7	82
Eccentric Black Hole Mergers in Active Galactic Nuclei	79
Dusty Starbursts Masquerading as Ultra-high Redshift Galaxies in JWST CEERS Observations	78
Astrophysics Milestones for Pulsar Timing Array Gravitational-wave Detection	76
Who Ordered That? Unequal-mass Binary Black Hole Mergers Have Larger Effective Spins	75
The 60 pc Environment of FRB 20180916B	74
First Batch of z ≈ 11–20 Candidate Objects Revealed by the James Webb Space Telescope Early Release Observations on SMACS 0723-73	73
PSR J1810+1744: Companion Darkening and a Precise High Neutron Star Mass	73
Spectroscopic Confirmation of CEERS NIRCam-selected Galaxies at z ≃ 8–10	73
Polarimetric Properties of Event Horizon Telescope Targets from ALMA	72
An Isolated Mass-gap Black Hole or Neutron Star Detected with Astrometric Microlensing	71
GW170817 and GW190814: Tension on the Maximum Mass	70
Panic! at the Disks: First Rest-frame Optical Observations of Galaxy Structure at z > 3 with JWST in the SMACS 0723 Field	70
New Constraint on Early Dark Energy from Planck and BOSS Data Using the Profile Likelihood	69
Intermediate-mass Black Holes from High Massive-star Binary Fractions in Young Star Clusters	68
The JWST Early-release Science Program for Direct Observations of Exoplanetary Systems II: A 1 to 20 μm Spectrum of the Planetary-mass Companion VHS 1256–1257 b	68