Publications

Showing 16 of 16 Publications

2025

Hubble Space Telescope Observations within the Sphere of Influence of the Powerful Supermassive Black Hole in PKS 0745-191
Hlavacek-Larrondo J, Choi H, Guo M, Richard-Laferrière A, Rhea C, Prunier M, Russell H, Fabian A, Walsh J, Gingras M, McNamara B, Allen S, Chené A, Edge A, Gendron-Marsolais M, McDonald M, Natarajan P, Sanders J, Steiner J, Vigneron B, von der Linden A. Hubble Space Telescope Observations within the Sphere of Influence of the Powerful Supermassive Black Hole in PKS 0745-191. The Astrophysical Journal 2025, 980: 170. DOI: 10.3847/1538-4357/ada7ed.
Peer-Reviewed Original Research
Concepts

2023

A Candidate Runaway Supermassive Black Hole Identified by Shocks and Star Formation in its Wake
van Dokkum P, Pasha I, Buzzo M, LaMassa S, Shen Z, Keim M, Abraham R, Conroy C, Danieli S, Mitra K, Nagai D, Natarajan P, Romanowsky A, Tremblay G, Urry C, van den Bosch F. A Candidate Runaway Supermassive Black Hole Identified by Shocks and Star Formation in its Wake. The Astrophysical Journal Letters 2023, 946: l50. DOI: 10.3847/2041-8213/acba86.
Peer-Reviewed Original Research
Concepts
Precision Modeling of JWST's First Cluster Lens SMACS J0723.3–7327* *Based on observations made with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. These observations are associated with programs GO-11103, GO-12166, GO-12884, GO-1409; and on observations made with the NASA/ESA/CSA James Webb Space Telescope, under NASA contract NAS 5–03127 for JWST. These observations are associated with program #2736.
Mahler G, Jauzac M, Richard J, Beauchesne B, Ebeling H, Lagattuta D, Natarajan P, Sharon K, Atek H, Claeyssens A, Clément B, Eckert D, Edge A, Kneib J, Niemiec A. Precision Modeling of JWST's First Cluster Lens SMACS J0723.3–7327* *Based on observations made with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. These observations are associated with programs GO-11103, GO-12166, GO-12884, GO-1409; and on observations made with the NASA/ESA/CSA James Webb Space Telescope, under NASA contract NAS 5–03127 for JWST. These observations are associated with program #2736. The Astrophysical Journal 2023, 945: 49. DOI: 10.3847/1538-4357/acaea9.
Peer-Reviewed Original Research
Concepts

2017

The Frontier Fields: Survey Design and Initial Results
Lotz J, Koekemoer A, Coe D, Grogin N, Capak P, Mack J, Anderson J, Avila R, Barker E, Borncamp D, Brammer G, Durbin M, Gunning H, Hilbert B, Jenkner H, Khandrika H, Levay Z, Lucas R, MacKenty J, Ogaz S, Porterfield B, Reid N, Robberto M, Royle P, Smith L, Storrie-Lombardi L, Sunnquist B, Surace J, Taylor D, Williams R, Bullock J, Dickinson M, Finkelstein S, Natarajan P, Richard J, Robertson B, Tumlinson J, Zitrin A, Flanagan K, Sembach K, Soifer B, Mountain M. The Frontier Fields: Survey Design and Initial Results. The Astrophysical Journal 2017, 837: 97. DOI: 10.3847/1538-4357/837/1/97.
Peer-Reviewed Original Research
Concepts

2015

ARE ULTRA-FAINT GALAXIES AT z = 6–8 RESPONSIBLE FOR COSMIC REIONIZATION? COMBINED CONSTRAINTS FROM THE HUBBLE FRONTIER FIELDS CLUSTERS AND PARALLELS* * Based on observations made with the NASA/ESA Hubble Space Telescope, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. These observations are associated with programs 13495, 11386, 13389, and 11689. STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. The Hubble Frontier Fields data and the lens models were obtained from the Mikulski Archive for Space Telescopes (MAST). This work utilizes gravitational lensing models produced by PIs Ebeling, Merten, and Zitrin, funded as part of the HST Frontier Fields program conducted by STScI.
Atek H, Richard J, Jauzac M, Kneib J, Natarajan P, Limousin M, Schaerer D, Jullo E, Ebeling H, Egami E, Clement B. ARE ULTRA-FAINT GALAXIES AT z = 6–8 RESPONSIBLE FOR COSMIC REIONIZATION? COMBINED CONSTRAINTS FROM THE HUBBLE FRONTIER FIELDS CLUSTERS AND PARALLELS* * Based on observations made with the NASA/ESA Hubble Space Telescope, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. These observations are associated with programs 13495, 11386, 13389, and 11689. STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. The Hubble Frontier Fields data and the lens models were obtained from the Mikulski Archive for Space Telescopes (MAST). This work utilizes gravitational lensing models produced by PIs Ebeling, Merten, and Zitrin, funded as part of the HST Frontier Fields program conducted by STScI. The Astrophysical Journal 2015, 814: 69. DOI: 10.1088/0004-637x/814/1/69.
Peer-Reviewed Original Research
Concepts
NEW CONSTRAINTS ON THE FAINT END OF THE UV LUMINOSITY FUNCTION AT z ∼ 7–8 USING THE GRAVITATIONAL LENSING OF THE HUBBLE FRONTIER FIELDS CLUSTER A2744**Based on observations made with the NASA/ESA Hubble Space Telescope, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. These observations are associated with programs 13495, 11386, 13389, and 11689. STScI is operated by the Association of Universities for Research in Astronomy, Inc. under NASA contract NAS 5-26555. The Hubble Frontier Fields data were obtained from the Mikulski Archive for Space Telescopes (MAST).
Atek H, Richard J, Kneib J, Jauzac M, Schaerer D, Clement B, Limousin M, Jullo E, Natarajan P, Egami E, Ebeling H. NEW CONSTRAINTS ON THE FAINT END OF THE UV LUMINOSITY FUNCTION AT z ∼ 7–8 USING THE GRAVITATIONAL LENSING OF THE HUBBLE FRONTIER FIELDS CLUSTER A2744**Based on observations made with the NASA/ESA Hubble Space Telescope, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. These observations are associated with programs 13495, 11386, 13389, and 11689. STScI is operated by the Association of Universities for Research in Astronomy, Inc. under NASA contract NAS 5-26555. The Hubble Frontier Fields data were obtained from the Mikulski Archive for Space Telescopes (MAST). The Astrophysical Journal 2015, 800: 18. DOI: 10.1088/0004-637x/800/1/18.
Peer-Reviewed Original Research
Concepts

2014

PROBING THE z > 6 UNIVERSE WITH THE FIRST HUBBLE FRONTIER FIELDS CLUSTER A2744**Based on observations made with the NASA/ESA Hubble Space Telescope (HST), which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. These observations are associated with programs 13495 and 11689. Based in part on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. This work utilizes gravitational lensing models produced by PIs Ebeling, Merten, and Zitrin, and Sharon funded as part of the HST Frontier Fields program conducted by STScI. STScI is operated by the Association of Universities for Research in Astronomy, Inc. under NASA contract NAS 5-26555. The lens models were obtained from the Mikulski Archive for Space Telescopes (MAST).
Atek H, Richard J, Kneib J, Clement B, Egami E, Ebeling H, Jauzac M, Jullo E, Laporte N, Limousin M, Natarajan P. PROBING THE z > 6 UNIVERSE WITH THE FIRST HUBBLE FRONTIER FIELDS CLUSTER A2744**Based on observations made with the NASA/ESA Hubble Space Telescope (HST), which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. These observations are associated with programs 13495 and 11689. Based in part on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. This work utilizes gravitational lensing models produced by PIs Ebeling, Merten, and Zitrin, and Sharon funded as part of the HST Frontier Fields program conducted by STScI. STScI is operated by the Association of Universities for Research in Astronomy, Inc. under NASA contract NAS 5-26555. The lens models were obtained from the Mikulski Archive for Space Telescopes (MAST). The Astrophysical Journal 2014, 786: 60. DOI: 10.1088/0004-637x/786/1/60.
Peer-Reviewed Original Research
Concepts

2011

EVIDENCE FOR THREE ACCRETING BLACK HOLES IN A GALAXY AT z ∼ 1.35: A SNAPSHOT OF RECENTLY FORMED BLACK HOLE SEEDS?**Based on observations made with the NASA/ESA Hubble Space Telescope, obtained from the data archive at the Space Telescope Institute. STScI is operated by the association of Universities for Research in Astronomy, Inc. under the NASA contract NAS 5-26555.
Schawinski K, Urry M, Treister E, Simmons B, Natarajan P, Glikman E. EVIDENCE FOR THREE ACCRETING BLACK HOLES IN A GALAXY AT z ∼ 1.35: A SNAPSHOT OF RECENTLY FORMED BLACK HOLE SEEDS?**Based on observations made with the NASA/ESA Hubble Space Telescope, obtained from the data archive at the Space Telescope Institute. STScI is operated by the association of Universities for Research in Astronomy, Inc. under the NASA contract NAS 5-26555. The Astrophysical Journal Letters 2011, 743: l37. DOI: 10.1088/2041-8205/743/2/l37.
Peer-Reviewed Original Research
Concepts

2003

A Wide-Field Hubble Space Telescope Study of the Cluster Cl 0024+1654 at z=0.4. II. The Cluster Mass Distribution
Kneib J, Hudelot P, Ellis R, Treu T, Smith G, Marshall P, Czoske O, Smail I, Natarajan P. A Wide-Field Hubble Space Telescope Study of the Cluster Cl 0024+1654 at z=0.4. II. The Cluster Mass Distribution. The Astrophysical Journal 2003, 598: 804-817. DOI: 10.1086/378633.
Peer-Reviewed Original Research
Concepts

2002

The Afterglow and Complex Environment of the Optically Dim Burst GRB 980613**Based on observations with the Nordic Optical Telescope, which is operated on the island of La Palma jointly by Denmark, Finland, Iceland, Norway, and Sweden, at the Spanish Observatorio del Rocque de los Muchachos of the Instituto de Astrofisica de Canarias, and on observations with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555.
Hjorth J, Thomsen B, Nielsen S, Andersen M, Holland S, Fynbo J, Pedersen H, Jaunsen A, Halpern J, Fesen R, Gorosabel J, Castro-Tirado A, McMahon R, Hoenig M, Björnsson G, Amati L, Tanvir N, Natarajan P. The Afterglow and Complex Environment of the Optically Dim Burst GRB 980613**Based on observations with the Nordic Optical Telescope, which is operated on the island of La Palma jointly by Denmark, Finland, Iceland, Norway, and Sweden, at the Spanish Observatorio del Rocque de los Muchachos of the Instituto de Astrofisica de Canarias, and on observations with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. The Astrophysical Journal 2002, 576: 113-119. DOI: 10.1086/341624.
Peer-Reviewed Original Research
Concepts
Probing the Mass Distribution in Groups of Galaxies using Gravitational Lensing
Möller O, Natarajan P, Kneib J, Blain A. Probing the Mass Distribution in Groups of Galaxies using Gravitational Lensing. The Astrophysical Journal 2002, 573: 562-575. DOI: 10.1086/340655.
Peer-Reviewed Original Research
Concepts

2000

Hubble Space Telescope Space Telescope Imaging Spectrograph Imaging of the Host Galaxy of GRB 980425/SN 1998bw**Based on observations with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555 and on observations made with ESO Telescopes at the Paranal Observatory under program 63.O-0065.
Fynbo J, Holland S, Andersen M, Thomsen B, Hjorth J, Björnsson G, Jaunsen A, Natarajan P, Tanvir N. Hubble Space Telescope Space Telescope Imaging Spectrograph Imaging of the Host Galaxy of GRB 980425/SN 1998bw**Based on observations with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555 and on observations made with ESO Telescopes at the Paranal Observatory under program 63.O-0065. The Astrophysical Journal 2000, 542: l89-l93. DOI: 10.1086/312942.
Peer-Reviewed Original Research
Concepts

1998

The Mass-to-Light Ratio of Early-Type Galaxies: Constraints from Gravitational Lensing in the Rich Cluster AC 114**Based on observations with the NASA/ESA Hubble Space Telescope obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555.
Natarajan P, Kneib J, Smail I, Ellis R. The Mass-to-Light Ratio of Early-Type Galaxies: Constraints from Gravitational Lensing in the Rich Cluster AC 114**Based on observations with the NASA/ESA Hubble Space Telescope obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. The Astrophysical Journal 1998, 499: 600-607. DOI: 10.1086/305660.
Peer-Reviewed Original Research
Concepts

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