SK
S. Kaspi
astro-ph.GAastro-phastro-ph.HEastro-ph.EPastro-ph.SRastro-ph.COastro-ph.IMbinaries: generalGalaxy: stellar contentgravitational lensing: micro
On Valency
published · living versionsW_grtgmvr3·v1 · currentpublished
Microlensing Discovery of a Population of Very Tight, Very Low-mass Binary Brown Dwarfs
with J. -Y. Choi, C. Han, A. Udalski, T. Sumi +119
1 version
W_pgxhv7hh·v1published
W_dnveg6af·v1published
Preprints & journals
157 papers in the corpus · 1997–2026Size, shape, density, and atmospheric limit of (50000) Quaoar revealed from 14 years of stellar occultation2607.06450v1 · Giuliano Margoti, Felipe Braga-Ribas, Jos'e Luis Ortiz et al.2026 · 0 citationsarXiv
AGN STORM 2. XII. Ground-Based Optical Photometry and Lag Measurements of Mrk 8172605.02875v1 · John W. Montano, Aaron J. Barth, Keith Horne et al.2026 · 0 citationsarXiv
The unusually red delay spectrum of the low-mass black hole AGN NGC\,4051 as revealed by intensive continuum reverberation mapping with the Las Cumbres Observatory2604.01405v1 · Marcin Marculewicz, Juan V. Hern'andez Santisteban, Keith Horne et al.2026 · 0 citationsarXiv
A Phenomenological Study of the Accretion Disk in the Super-Eddington AGN I Zw 12601.05818v1 · Farin Drewes, Roberta Vieliute, Juan V. Hern'andez Santisteban et al.2026 · 0 citationsarXiv
Emission-Line and Continuum Reverberation Mapping of the NLS1 Galaxy WPVS 482511.09153v1 · M.A. Probst, W. Kollatschny, M.W. Ochmann et al.2025 · 0 citationsarXiv
AGN STORM 2. XI. Spectroscopic reverberation mapping of the hot dust in Mrk 8172510.21395v1 · Hermine Landt, Benjamin D. Boizelle, Michael S. Brotherton et al.2025 · 1 citationarXiv
A high geometric albedo and small size of the Haumea cluster member (24835) 1995 SM55 from a stellar occultation and photometric observations2509.15384v1 · J. L. Ortiz, N. Morales, B. Sicardy et al.2025 · 0 citationsA&A 703, A147 (2025)
Echo mapping of the black hole accretion flow in NGC 74692506.06731v1 · Raj Prince, Juan V. Hern'andez Santisteban, Keith Horne et al.2025 · 12 citationsarXiv
Size and shape of the trans-Neptunian object (470316) 2007 OC10: Comparison with thermal data2504.02457v1 · J.M. G'omez-Lim'on, R. Leiva, J. L. Ortiz et al.2025 · 1 citationA&A 697, A157 (2025)
Double-peaked Ca II traces a relativistic broad-line region disk in NGC 45932503.21994v2 · M.W. Ochmann, P.M. Weilbacher, M.A. Probst et al.2025 · 3 citationsA&A 697, L5 (2025)
Stellar occultation observations of (38628) Huya and its satellite: a detailed look into the system2501.09739v1 · F. L. Rommel, E. Fern'andez-Valenzuela, B. C. N. Proudfoot et al.2025 · 11 citationsarXiv
Broad-Line Region Characterization in Dozens of Active Galactic Nuclei Using Small-Aperture Telescopes2411.07847v1 · Catalina Sobrino Figaredo, Doron Chelouche, Martin Haas et al.2024 · 4 citationsarXiv
AGN STORM 2: X. The origin of the interband continuum delays in Mrk 8172410.02652v2 · Hagai Netzer, Michael R. Goad, Aaron J. Barth et al.2024 · 12 citationsarXiv
AGN STORM 2. VII. A Frequency-resolved Map of the Accretion Disk in Mrk 817: Simultaneous X-ray Reverberation and UVOIR Disk Reprocessing Time Lags2409.09115v1 · Collin Lewin, Erin Kara, Aaron J. Barth et al.2024 · 20 citationsApJ 974 271 (2024)
Reverberation mapping of high-mass and high-redshift quasars using gravitational time delays2408.00073v2 · Miriam Golubchik, Charles L. Steinhardt, Adi Zitrin et al.2024 · 10 citationsarXiv
First Direct Evidence for Keplerian Rotation in Quasar Inner Broad Line Regions2407.13381v1 · C. Fian, J. Jim'enez-Vicente, E. Mediavilla et al.2024 · 3 citationsarXiv
Revealing the inner workings of the lensed quasar SDSS J1339+1310: Insights from microlensing analysis2407.05942v1 · C. Fian, J. A. Munoz, J. Jim'enez-Vicente et al.2024 · 2 citationsarXiv
AGN STORM 2: VIII. Investigating the Narrow Absorption Lines in Mrk 817 Using HST-COS Observations2407.04164v2 · Maryam Dehghanian, Nahum Arav, Gerard A. Kriss et al.2024 · 5 citationsarXiv
Comet C/2012 S1 (ISON) crossing the Jupiter orbit2407.00685v1 · Margarita Safonova, Noah Brosch, Shai Kaspi et al.2024 · 0 citationsarXiv
AGN STORM 2: IX. Studying the Dynamics of the Ionized Obscurer in Mrk 817 with High-resolution X-ray Spectroscopy2406.17061v1 · Fatima Zaidouni, Erin Kara, Peter Kosec et al.2024 · 11 citationsarXiv
The transient event in NGC 1566 from 2017 to 2019 -- I. An eccentric accretion disk and a turbulent, disk-dominated broad-line region unveiled by double-peaked Ca II and O I lines2402.12054v3 · M.W. Ochmann, W. Kollatschny, M.A. Probst et al.2024 · 19 citationsA&A 686, A17 (2024)
Probing the structure of the lensed quasar SDSS J1004+4112 through microlensing analysis of spectroscopic data2310.11212v1 · C. Fian, J. A. Munoz, R. For'es-Toribio et al.2023 · 10 citationsarXiv
AGN STORM 2. VI. Mapping Temperature Fluctuations in the Accretion Disk of Mrk 8172310.01497v1 · Jack M. M. Neustadt, Christopher S. Kochanek, John Montano et al.2023 · 17 citationsarXiv
The changing material around (2060) Chiron from an occultation on 2022 December 152308.03458v1 · J. L. Ortiz, C. L. Pereira, B. Sicardy et al.2023 · 36 citationsA&A 676, L12 (2023)
AGN STORM 2: V. Anomalous Behavior of the CIV Light Curve in Mrk 8172308.00742v3 · Y. Homayouni, Gerard A. Kriss, Gisella De Rosa et al.2023 · 0 citationsarXiv
Diffuse emission in microlensed quasars and its implications for accretion-disk physics2307.14824v1 · C. Fian, D. Chelouche, S. Kaspi2023 · 13 citationsA&A 677, A94 (2023)
AGN STORM 2. IV. Swift X-ray and ultraviolet/optical monitoring of Mrk 8172306.17663v2 · Edward M. Cackett, Jonathan Gelbord, Aaron J. Barth et al.2023 · 33 citationsarXiv
AGN STORM 2: II. Ultraviolet Observations of Mrk817 with the Cosmic Origins Spectrograph on the Hubble Space Telescope2302.11587v1 · Y. Homayouni, Gisella De Rosa, Rachel Plesha et al.2023 · 17 citationsarXiv
Continuum reverberation mapping of MCG 08-11-0112302.08402v1 · C. Fian, D. Chelouche, S. Kaspi et al.2023 · 11 citationsA&A 672, A132 (2023)
UV/Optical disk reverberation lags despite a faint X-ray corona in the AGN Mrk 3352302.07342v1 · Erin Kara, Aaron J. Barth, Edward M. Cackett et al.2023 · 41 citationsarXiv
Physical properties of the trans-Neptunian object (38628) Huya from a multi-chord stellar occultation2205.12882v3 · P. Santos-Sanz, J.L. Ortiz, B. Sicardy et al.2022 · 18 citationsA&A 664, A130 (2022)
Continuum reverberation mapping of the quasar PG 2130+0992111.07385v1 · C. Fian, D. Chelouche, S. Kaspi et al.2021 · 14 citationsA&A 659, A13 (2022)
The Great Slump: Mrk926 reveals discrete and varying Balmer line satellite components during a drastic phase of decline2110.10051v2 · Wolfram Kollatschny, Martin W. Ochmann, Shai Kaspi et al.2021 · 5 citationsA&A 657, A122 (2022)
Transient obscuration event captured in NGC~3227 II. Warm absorbers and obscuration events in archival XMM-Newton and NuSTAR observations2110.07861v1 · Yijun Wang, Jelle Kaastra, Missagh Mehdipour et al.2021 · 24 citationsA&A 657, A77 (2022)
Exploratory X-Ray Monitoring of Luminous Radio-Quiet Quasars at High Redshift: Extended Time-Series Analyses and Stacked Imaging Spectroscopy2110.07065v1 · Marcus O. Thomas, Ohad Shemmer, W.N. Brandt et al.2021 · 2 citationsarXiv
Transient obscuration event captured in NGC 3227. I. Continuum model for the broadband spectral energy distribution2106.14957v1 · M. Mehdipour, G. A. Kriss, J. S. Kaastra et al.2021 · 23 citationsA&A 652, A150 (2021)
Taking a Long Look: A Two-Decade Reverberation Mapping Study of High-Luminosity Quasars2106.00691v1 · Shai Kaspi, W. N. Brandt, Dan Maoz et al.2021 · 46 citationsarXiv
AGN STORM 2: I. First results: A Change in the Weather of Mrk 8172105.05840v1 · Erin Kara, Missagh Mehdipour, Gerard A. Kriss et al.2021 · 120 citationsarXiv
Dust Reverberation of 3C273: torus structure and lag -- luminosity relation2004.10244v1 · Catalina Sobrino Figaredo, Martin Haas, Michael Ramolla et al.2020 · 20 citationsarXiv
Variability and the size-luminosity relation of the intermediate mass AGN in NGC 43952002.08028v3 · Hojin Cho, Jong-Hak Woo, Edmund Hodges-Kluck et al.2020 · 18 citationsarXiv
OGLE-2013-BLG-0911Lb: A Secondary on the Brown-Dwarf Planet Boundary around an M-dwarf1912.09613v1 · Shota Miyazaki, Takahiro Sumi, David P. Bennett et al.2019 · 11 citationsarXiv
Simultaneous Millimeter-wave and X-ray monitoring of the Seyfert Galaxy NGC 74691911.04544v1 · Ehud Behar, Shai Kaspi, Gabriel Paubert et al.2019 · 22 citationsarXiv
Multi-wavelength campaign on NGC 7469 V. Analysis of the HST/COS observations: Super solar metallicity, distance, and trough variation models1910.11249v1 · N. Arav, X. Xu, G.A. Kriss et al.2019 · 10 citationsarXiv
Four (Super)luminous Supernovae from the First Months of the ZTF Survey1910.02968v2 · R. Lunnan, Lin Yan, D. A. Perley et al.2019 · 32 citationsThe Astrophysical Journal, Volume 901, Number 61 (2020)
The trans-Neptunian object (84922) 2003 VS2 through stellar occultations1908.06645v1 · Gustavo Benedetti-Rossi, P. Santos-Sanz, J. L. Ortiz et al.2019 · 16 citationsarXiv
Space Telescope and Optical Reverberation Mapping Project. VIII. Time Variability of Emission and Absorption in NGC 5548 Based on Modeling the Ultraviolet Spectrum1907.03874v2 · G. A. Kriss, G. De Rosa, J. Ely et al.2019 · 47 citationsarXiv
Multi-wavelength Campaign on NGC 7469 VI. Photoionisation Modelling of the Emission Line Regions and the Warm Absorber1907.01946v2 · S. Grafton-Waters, G. Branduardi-Raymont, M. Mehdipour et al.2019 · 19 citationsA&A 633, A62 (2020)
Pluto's lower atmosphere and pressure evolution from ground-based stellar occultations, 1988-20161903.02315v1 · E. Meza, B. Sicardy, M. Assafin et al.2019 · 46 citationsA&A 625, A42 (2019)
The Zwicky Transient Facility: System Overview, Performance, and First Results1902.01932v1 · Eric C. Bellm, Shrinivas R. Kulkarni, Matthew J. Graham et al.2019 · 2,068 citationsPublications of the Astronomical Society of the Pacific, Volume 131, Issue 995, pp. 018002 (2019)on Valency
The Zwicky Transient Facility: Science Objectives1902.01945v1 · Matthew J. Graham, S. R. Kulkarni, Eric C. Bellm et al.2019 · 832 citationsarXiv
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