ZA
Zaven Arzoumanian
astro-ph.HEgr-qcastro-ph.IMastro-ph.SRastro-ph.GAastro-phastro-ph.COnucl-thhep-phastro-ph.EP
On Valency
published · living versionsW_g27cs8db·v1 · currentpublished
The NANOGrav 15-year Data Set: Search for Signals from New Physics
with Adeela Afzal, Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald +118
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Preprints & journals
222 papers in the corpus · 1993–2026The NANOGrav 15 yr Dataset: Modified Functional Forms for Profile-Evolution Time Delays in Pulsar Timing Models2610.10431v1 · Sofia V. Sosa Fiscella, Michael T. Lam, Olivia West et al.2026 · 0 citationsarXiv
Optimal Pulsar Timing Array Strategies with the Deep Synoptic Array2610.00836v1 · Tyler Cohen, Paul B. Demorest, Jeremy G. Baier et al.2026 · 0 citationsarXiv
Constraints on Supermassive Black Hole Binaries from the Lack of Resolvable Sources in the NANOGrav 15-yr Dataset2609.32306v1 · Emiko C. Gardiner, Kayhan Gultekin, Philippe Turgeon et al.2026 · 0 citationsarXiv
The Radius of the Neutron Star PSR J0614-3329 from NICER Data2609.00965v1 · M. C. Miller, A. J. Dittmann, I. M. Holt et al.2026 · 0 citationsarXiv
Generalized Non-linear Bayesian Pulsar Timing with Enterprise2608.18047v1 · Andrew R. Kaiser, Jeffrey S. Hazboun, Maura A. McLaughlin et al.2026 · 0 citationsarXiv
Pulsar Timing Array Sensitivity to Anisotropy: Empirical Sensitivity Curves, Scaling Relations, and the Multi-Resolution Pixel Basis2608.09781v1 · Taha T. Moursy, Nihan S. Pol, Gabriella Agazie et al.2026 · 0 citationsarXiv
Evaluating the Fourier Approximation in Pulsar Timing Array Analysis2606.30536v1 · Yongqi Zhang, Hayden Scholz, Ken D. Olum et al.2026 · 0 citationsarXiv
The NANOGrav 15 yr Data Set: Impacts of Customized Chromatic Noise Models on Gravitational Wave Analyses2606.28554v1 · Nikita Agarwal, Gabriella Agazie, Alessandra Amosso et al.2026 · 0 citationsarXiv
The NANOGrav 15 yr Data Set: Customized Chromatic Noise Models2606.28571v1 · Bjorn Larsen, Jeremy G. Baier, Daniel J. Oliver et al.2026 · 1 citationApJ 1005 29 (2026)
The NANOGrav 15 yr and 20 yr Datasets: Timing Events and Pulse Shape Changes2604.05453v1 · Ben Jacobson-Bell, James M. Cordes, Shami Chatterjee et al.2026 · 1 citationarXiv
Photon-Count Statistics of Crab X-ray Pulses: Skellam Behavior and Excess Variance in the Main Pulse2604.05050v1 · Max Worchel, Margaret M.Ferris, Sasha Levina et al.2026 · 0 citationsarXiv
Narrowband searches for continuous gravitational waves from known pulsars in the first two parts of the fourth LIGO--Virgo--KAGRA observing run2603.25938v2 · A. G. Abac, I. Abouelfettouh, F. Acernese et al.2026 · 1 citationThe Astrophysical Journal, 1005:221, 2026 July 10
Gravitational Wave Measurement of the - Intrinsic Scatter at High Redshift2603.11167v2 · Cayenne Matt, Kayhan Gultekin, Gabriella Agazie et al.2026 · 0 citationsAstrophys. J. 1006, 63, (2026)
The NANOGrav 15 yr Data Set: Piecewise Power-Law Reconstruction of the Gravitational-Wave Background2601.09481v1 · Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald et al.2026 · 1 citationarXiv
New and updated timing models for seven young energetic X-ray pulsars, including the Big Glitcher PSR J0537-69102512.19800v2 · Wynn C. G. Ho, Lucien Kuiper, Cristobal M. Espinoza et al.2025 · 0 citationsMon. Not. R. Astron. Soc. 546, staf2264 (2026)
NICER Magnetar Burst Catalog2512.12291v3 · Che-Yen Chu, Chin-Ping Hu, Teruaki Enoto et al.2025 · 1 citationarXiv
Origin of the stellar Fe K{\alpha} line clarified with FUV and X-ray observations of a superflare on the RS Canum Venaticorum-type Star UX Arietis2512.09750v1 · Shun Inoue, Wataru Buz Iwakiri, Tomoki Kimura et al.2025 · 0 citationsarXiv
The Radius of PSR J0437-4715 from NICER Data2512.08790v1 · M. C. Miller, A. J. Dittmann, I. M. Holt et al.2025 · 11 citationsThe Astrophysical Journal Letters, Volume 1000, Issue 2, id.L48, 17 pp (2026)
CHIME-o-Grav: Wideband Timing of Four Millisecond Pulsars from the NANOGrav 15-yr dataset2510.16668v3 · Gabriella Agazie, David L. Kaplan, Abhimanyu Susobhanan et al.2025 · 2 citationsarXiv
Searching for Exotrojans in Pulsar Systems2510.16164v2 · Jackson D. Taylor, Emmanuel Fonseca, Lankeswar Dey et al.2025 · 0 citationsApJ 1000 (2026) 82
Eclipsing Stellar Flare on the Demon Star Algol Binary System Observed during the MAXI-NICER Follow-up Campaign in 20182510.14587v2 · Kazuya Nakayama, Wataru Buz Iwakiri, Teruaki Enoto et al.2025 · 1 citationarXiv
The NANOGrav 15-Year Data Set: Improved Timing Precision With VLBI Astrometric Priors2509.21203v2 · Sofia V. Sosa Fiscella, Michael T. Lam, Gabriella Agazie et al.2025 · 0 citationsarXiv
NICER observations reveal doubled timescales in Ansky's quasi-periodic eruptions (QPEs)2509.16304v1 · L. Hern'andez-Garc'ia, P. S'anchez-S'aez, J. Chakraborty et al.2025 · 4 citationsA&A 703, A263 (2025)
Inferring Mbh-Mbulge Evolution from the Gravitational Wave Background2508.18126v2 · Cayenne Matt, Kayhan Gultekin, Luke Kelley et al.2025 · 5 citationsarXiv
The NANOGrav 15 yr Data Set: Targeted Searches for Supermassive Black Hole Binaries2508.16534v2 · Nikita Agarwal, Gabriella Agazie, Akash Anumarlapudi et al.2025 · 16 citationsThe Astrophysical Journal Letters, Volume 998, Issue 1, id.L11, 28 pp. (2026)
The NANOGrav 15-year Data Set: Search for Gravitational Scattering of Pulsars by Free-Floating Objects in Interstellar Space2507.19475v2 · Lankeswar Dey, Ross J. Jennings, Jackson D. Taylor et al.2025 · 0 citationsarXiv
Quasi-periodic variation during a fast X-ray outburst of a high-mass X-ray binary MAXI J0709-159 / LY CMa observed by NICER2507.10180v2 · Mutsumi Sugizaki, Tatehiro Mihara, Kohei Kobayashi et al.2025 · 0 citationsarXiv
SRG/eROSITA No. 5: Discovery of quasi-periodic eruptions every ~3.7 days from a galaxy at z>0.12506.17138v2 · R. Arcodia, P. Baldini, A. Merloni et al.2025 · 20 citationsarXiv
The NANOGrav 15-Year Data Set: A Case Study for Simplified Dispersion Measure Modeling for PSR J1455-3330 and the Impact on Gravitational Wave Sensitivity2506.03597v2 · Michael T. Lam, David L. Kaplan, Gabriella Agazie et al.2025 · 0 citationsarXiv
Evolution of the inner accretion flow and the white-dwarf spin pulse during the 2023 outburst in GK Persei2504.21313v1 · Mariko Kimura, Takayuki Hayashi, Yuuki Wada et al.2025 · 2 citationsarXiv
Discovery of extreme Quasi-Periodic Eruptions in a newly accreting massive black hole2504.07169v1 · Lorena Hern'andez-Garc'ia, Joheen Chakraborty, Paula S'anchez-S'aez et al.2025 · 41 citationsarXiv
A Comprehensive Study of Thermonuclear X-ray Bursts from 4U 1820-30 with NICER: Accretion Disk Interactions and a Candidate Burst Oscillation2504.07328v1 · Gaurava K. Jaisawal, Z. Funda Bostancı, Tugba Boztepe et al.2025 · 18 citationsApJ, 975 67 (2024)
On the Origin of Spectral Features Observed during Thermonuclear X-ray Bursts and in the Aftermath Emission of a Long Burst from 4U 1820-302504.07329v1 · Gaurava K. Jaisawal, J'erome Chenevez, Tod E. Strohmayer et al.2025 · 9 citationsarXiv
Timing and Spectral Evolution of the Magnetar 1E 1841-045 in Outburst2502.20079v1 · G. Younes, S. K. Lander, M.G. Baring et al.2025 · 2 citationsarXiv
The NANOGrav 15-year Data Set: Search for Gravitational Wave Memory2502.18599v2 · Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald et al.2025 · 0 citationsarXiv
Search for continuous gravitational waves from known pulsars in the first part of the fourth LIGO-Virgo-KAGRA observing run2501.01495v2 · A. G. Abac, R. Abbott, I. Abouelfettouh et al.2025 · 19 citationsAstrophys.J. 983 (2025) 2, 99
X-ray polarization of the magnetar 1E 1841-0452412.16036v2 · Rachael Stewart, George A. Younes, Alice K. Harding et al.2024 · 14 citationsarXiv
Pulse Profile Variability of PSR J1022+1001 in NANOGrav Data2412.05452v1 · William Fiore, Maura A. McLaughlin, Gabriella Agazie et al.2024 · 2 citationsarXiv
The NANOGrav 15 Yr Data Set: Removing Pulsars One by One from the Pulsar Timing Array2411.14846v2 · Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald et al.2024 · 3 citationsarXiv
The NANOGrav 12.5-Year Data Set: Probing Interstellar Turbulence and Precision Pulsar Timing with PSR J1903+03272411.08191v1 · Abra Geiger, James M. Cordes, Michael T. Lam et al.2024 · 9 citations2025 ApJ 986 191
Inference on inner galaxy structure via gravitational waves from supermassive binaries2411.05906v3 · Yifan Chen, Matthias Daniel, Daniel J. D'Orazio et al.2024 · 6 citationsarXiv
STROBE-X Mission Overview2410.08342v1 · Paul S. Ray, Peter W. A. Roming, Andrea Argan et al.2024 · 3 citationsarXiv
The STROBE-X Low Energy Modular Array (LEMA) Instrument2410.08363v1 · Keith C. Gendreau, Dominic Maes, Ronald A. Remillard et al.2024 · 0 citationsarXiv
Quasi-periodic X-ray eruptions years after a nearby tidal disruption event.39385028 · Nicholl, M, Pasham, D R, Mummery, A et al.2024 · 85 citationsNature. 2024;634(8035):804-808
A NICER View of PSR J1231$-$1411: A Complex Case2409.14923v2 · Tuomo Salmi, Julia S. Deneva, Paul S. Ray et al.2024 · 95 citationsApJ 976 58 (2024)
A growing braking index and spin-down swings for the pulsar PSR B0540-692409.10759v1 · Crist'obal M. Espinoza, Lucien Kuiper, Wynn C. G. Ho et al.2024 · 5 citationsarXiv
The NANOGrav 15 yr Data Set: Running of the Spectral Index2408.10166v2 · Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald et al.2024 · 11 citationsAstrophys. J. Lett. 978 (2025) 2, L29
The NANOGrav 15 yr data set: Posterior predictive checks for gravitational-wave detection with pulsar timing arrays2407.20510v2 · Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald et al.2024 · 4 citationsarXiv
The Anomalous Acceleration of PSR J2043+1711: Long-Period Orbital Companion or Stellar Flyby?2407.06482v3 · Thomas Donlon II, Sukanya Chakrabarti, Michael T. Lam et al.2024 · 8 citationsarXiv
A NICER View of the Nearest and Brightest Millisecond Pulsar: PSR J0437$\unicode{x2013}$47152407.06789v1 · Devarshi Choudhury, Tuomo Salmi, Serena Vinciguerra et al.2024 · 292 citationsarXiv
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