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G

G. Hélou

Caltech/IPAC

112H-index
758Paper Count
6.7WCitation Count
Published Papers 250
Publication Date
Low-latency Forecasts of Kilonova Light Curves for Rubin and ZTF
err2026-01-14
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errNatalya Johnson; Niharika Sravan; R. Weizmann Kiendrebeogo; Michael W. Coughlin; Derek Davis; Andrew Toivonen; Theophile Jegou du Laz; Ethan Erb; Tomás Ahumada; Tyler Barna; George Helou; Roger Smith; Ben Rusholme; Russ R. Laher; Ashish A. Mahabal
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ZTF25abjmnps (AT2025ulz) and S250818k: A Candidate Superkilonova from a Subthreshold Subsolar Gravitational-wave Trigger
err2025-12-15
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errMansi M. Kasliwal; Tomás Ahumada; Robert Stein; Viraj Karambelkar; Xander J. Hall; Avinash Singh; Christoffer Fremling; Brian D. Metzger; Mattia Bulla; Vishwajeet Swain; Sarah Antier; Marion Pillas; Malte Busmann; James Freeburn; Sergey Karpov; Aleksandra Bochenek; Brendan O’Connor; Daniel A. Perley; Dalya Akl; Shreya Anand; Andrew Toivonen; Sam Rose; Theophile Jegou du Laz; Chang Liu; Kaustav Das; Sushant Sharma Chaudhary; Tyler Barna; Aditya Pawan Saikia; Igor Andreoni; Eric C. Bellm; Varun Bhalerao; S. Bradley Cenko; Michael W. Coughlin; Daniel Gruen; Daniel Kasen; Adam A. Miller; Samaya Nissanke; Antonella Palmese; Jesper Sollerman; Niharika Sravan; G.C. Anupama; Smaranika Banerjee; Sudhanshu Barway; Joshua S. Bloom; Tomás Cabrera; Tracy Chen; Chris Copperwheat; Alessandra Corsi; Richard Dekany; Nicholas Earley; Matthew Graham; Patrice Hello; George Helou; Lei Hu; Yves Kini; Ashish Mahabal; Frank Masci; Tanishk Mohan; Natalya Pletskova; Josiah Purdum; Yu-Jing Qin; Nabeel Rehemtulla; Anirudh Salgundi; Yuankun Wang
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Discovery of SN 2025wny: A Strongly Gravitationally Lensed Superluminous Supernova at z = 2.01
err2025-12-05
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errJoel Johansson; Daniel A. Perley; Ariel Goobar; Jacob L. Wise; Yu-Jing Qin; Zoë McGrath; Steve Schulze; Cameron Lemon; Anjasha Gangopadhyay; Konstantinos Tsalapatas; Igor Andreoni; Eric C. Bellm; Joshua S. Bloom; Richard Dekany; Suhail Dhawan; Claes Fransson; Christoffer Fremling; Matthew J. Graham; Steven L. Groom; Daniel Gruen; Xander J. Hall; George Helou; Mansi Kasliwal; Russ R. Laher; Ragnhild Lunnan; Ashish A. Mahabal; Adam A. Miller; Edvard Mörtsell; Jakob Nordin; Jacob Osman Hjortlund; R. Michael Rich; Reed L. Riddle; Avinash Singh; Jesper Sollerman; Alice Townsend; Lin Yan
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Optically Overluminous Tidal Disruption Events: Outflow Properties and Implications for Extremely Relativistic Disruptions
err2025-11-05
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errYuhan Yao; Kate D. Alexander; Wenbin Lu; Jean J. Somalwar; Vikram Ravi; Ryan Chornock; Raffaella Margutti; Daniel A. Perley; James C. A. Miller-Jones; Paz Beniamini; Nayana A.J.; Joshua S. Bloom; Collin T. Christy; Matthew J. Graham; Steven L. Groom; Erica Hammerstein; George Helou; Mansi M. Kasliwal; S. R. Kulkarni; Russ R. Laher; Ashish A. Mahabal; Jérémy Neveu; Reed Riddle; Roger Smith; Sjoert van Velzen
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Prediscovery Activity of New Interstellar Object 3I/ATLAS: Rapid Brightening from 6 to 4 au
err2025-10-29
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errQuanzhi Ye; Michael S. P. Kelley; Henry H. Hsieh; Eric C. Bellm; Tracy X. Chen; Richard Dekany; Andrew Drake; Steven L. Groom; George Helou; Shrinivas R. Kulkarni; Thomas A. Prince; Reed Riddle
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QZO: A Catalog of 5 Million Quasars from the Zwicky Transient Facility
err2025-10-10
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errS. J. Nakoneczny; M. J. Graham; D. Stern; G. Helou; S. G. Djorgovski; E. C. Bellm; T. X. Chen; R. Dekany; A. Drake; A. A. Mahabal; T. A. Prince; R. Riddle; B. Rusholme; N. Sravan
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Deep Learning to Improve the Discovery of Near-Earth Asteroids in the Zwicky Transient Facility
err2025-05-21
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errIrureta-Goyena, Belen Yu; Helou, George; Masci, Frank; Prince, Thomas; Venkataramani, Kumar; Ye, Quanzhi; Masiero, Joseph; Dux, Frederic; Salzmann, Mathieu
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Bird's-eye View of Molecular Gas across Stephan's Quintet Galaxy Group and Intragroup Medium
err2024-12-30
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errEmonts, B. H. C.; Appleton, P. N.; Lisenfeld, U.; Guillard, P.; Xu, C. K.; Reach, W. T.; Barcos-Munoz, L.; Labiano, A.; Ogle, P. M.; O'Sullivan, E.; Togi, A.; Gallagher, S. C.; Aromal, P.; Duc, P. -a.; Alatalo, K.; Boulanger, F.; Diaz-Santos, T.; Helou, G.
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A Case Study of Gas Impacted by Black-hole Jets with the JWST: Outflows, Bow Shocks, and High Excitation of the Gas in the Galaxy IC 5063
err2024-12-10
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errDasyra, Kalliopi M.; Paraschos, Georgios F.; Combes, Francoise; Patapis, Polychronis; Helou, George; Papachristou, Michalis; Fernandez-Ontiveros, Juan-Antonio; Bisbas, Thomas G.; Spinoglio, Luigi; Armus, Lee; Malkan, Matthew
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Searching for Gravitational Wave Optical Counterparts with the Zwicky Transient Facility: Summary of O4a
err2024-11-08
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errAhumada, Tomas; Anand, Shreya; Coughlin, Michael W.; Gupta, Vaidehi; Kasliwal, Mansi M.; Karambelkar, Viraj R.; Stein, Robert D.; Waratkar, Gaurav; Swain, Vishwajeet; du Laz, Theophile Jegou; Anumarlapudi, Akash; Andreoni, Igor; Bulla, Mattia; Srinivasaragavan, Gokul P.; Toivonen, Andrew; Wold, Avery; Bellm, Eric C.; Cenko, S. Bradley; Kaplan, David L.; Sollerman, Jesper; Bhalerao, Varun; Perley, Daniel; Salgundi, Anirudh; Suresh, Aswin; Hinds, K-Ryan; Reusch, Simeon; Necker, Jannis; Cook, David O.; Pletskova, Natalya; Singer, Leo P.; Banerjee, Smaranika; Barna, Tyler; Copperwheat, Christopher M.; Healy, Brian; Kiendrebeogo, R. Weizmann; Kumar, Harsh; Kumar, Ravi; Pezzella, Marianna; Sagues-Carracedo, Ana; Sravan, Niharika; Bloom, Joshua S.; Chen, Tracy X.; Graham, Matthew; Helou, George; Laher, Russ R.; Mahabal, Ashish A.; Purdum, Josiah; Anupama, G. C.; Barway, Sudhanshu; Basu, Judhajeet; Raman, Dhananjay; Roychowdhury, Tamojeet
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Probing Presupernova Mass Loss in Double-peaked Type Ibc Supernovae from the Zwicky Transient Facility
err2024-08-27
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errDas, Kaustav K.; Kasliwal, Mansi M.; Sollerman, Jesper; Fremling, Christoffer; Irani, I.; Leung, Shing-Chi; Yang, Sheng; Wu, Samantha; Fuller, Jim; Anand, Shreya; Andreoni, Igor; Barbarino, C.; Brink, Thomas G.; De, Kishalay; Dugas, Alison; Groom, Steven L.; Helou, George; Hinds, K-Ryan; Ho, Anna Y. Q.; Karambelkar, Viraj; Kulkarni, S. R.; Perley, Daniel A.; Purdum, Josiah; Regnault, Nicolas; Schulze, Steve; Sharma, Yashvi; Sit, Tawny; Sravan, Niharika; Srinivasaragavan, Gokul P.; Stein, Robert; Taggart, Kirsty; Tartaglia, Leonardo; Tzanidakis, Anastasios; Wold, Avery; Yan, Lin; Yao, Yuhan; Zolkower, Jeffry
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Annotated Coadds: Concise Metrics for Characterizing Survey Cadence and for Discovering Variable and Transient Sources
err2023-08-31
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errShupe, David L.; Masci, Frank J.; Chary, Ranga Ram; Helou, George; Faisst, Andreas L.; Cutri, Roc M.; Brooke, Tim Y.; Surace, Jason A.; Marsh, Ken A.
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Completeness of the NASA/IPAC Extragalactic Database (NED) Local Volume Sample
err2023-08-23
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errCook, D. O.; Mazzarella, J. M.; Helou, G.; Alcala, A.; Chen, T. X.; Ebert, R.; Frayer, C.; Kim, J.; Lo, T.; Madore, B. F.; Ogle, P. M.; Schmitz, M.; Singer, L. P.; Terek, S.; Valladon, J.; Wu, X.
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Orbital Decay in an Accreting and Eclipsing 13.7 Minute Orbital Period Binary with a Luminous Donor
err2023-08-08
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errBurdge, Kevin B.; El-Badry, Kareem; Rappaport, Saul; Wong, Tin Long Sunny; Bauer, Evan B.; Bildsten, Lars; Caiazzo, Ilaria; Chakrabarty, Deepto; Chickles, Emma; Graham, Matthew J.; Kara, Erin; Kulkarni, S. R.; Marsh, Thomas R.; Nynka, Melania; Prince, Thomas A.; Simcoe, Robert A.; van Roestel, Jan; Vanderbosch, Zach; Bellm, Eric C.; Dekany, Richard G.; Drake, Andrew J.; Helou, George; Masci, Frank J.; Milburn, Jennifer; Riddle, Reed; Rusholme, Ben; Smith, Roger
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A Search for Extragalactic Fast Blue Optical Transients in ZTF and the Rate of AT2018cow-like Transients
err2023-06-05
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errHo, Anna Y. Q.; Perley, Daniel A.; Gal-Yam, Avishay; Lunnan, Ragnhild; Sollerman, Jesper; Schulze, Steve; Das, Kaustav K.; Dobie, Dougal; Yao, Yuhan; Fremling, Christoffer; Adams, Scott; Anand, Shreya; Andreoni, Igor; Bellm, Eric C.; Bruch, Rachel J.; Burdge, Kevin B.; Castro-Tirado, Alberto J.; Dahiwale, Aishwarya; De, Kishalay; Dekany, Richard; Drake, Andrew J.; Duev, Dmitry A.; Graham, Matthew J.; Helou, George; Kaplan, David L.; Karambelkar, Viraj; Kasliwal, Mansi M.; Kool, Erik C.; Kulkarni, S. R.; Mahabal, Ashish A.; Medford, Michael S.; Miller, A. A.; Nordin, Jakob; Ofek, Eran; Petitpas, Glen; Riddle, Reed; Sharma, Yashvi; Smith, Roger; Stewart, Adam J.; Taggart, Kirsty; Tartaglia, Leonardo; Tzanidakis, Anastasios; Winters, Jan Martin
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Volumetric Rates of Luminous Red Novae and Intermediate-luminosity Red Transients with the Zwicky Transient Facility
err2023-05-17
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errKarambelkar, Viraj R.; Kasliwal, Mansi M.; Blagorodnova, Nadejda; Sollerman, Jesper; Aloisi, Robert; Anand, Shreya G.; Andreoni, Igor; Brink, Thomas G.; Bruch, Rachel; Cook, David; Das, Kaustav Kashyap; De, Kishalay; Drake, Andrew; Filippenko, Alexei V.; Fremling, Christoffer; Helou, George; Ho, Anna; Jencson, Jacob; Jones, David; Laher, Russ R.; Masci, Frank J.; Patra, Kishore C.; Purdum, Josiah; Reedy, Alexander; Sit, Tawny; Sharma, Yashvi; Tzanidakis, Anastasios; van der Walt, Stefan J.; Yao, Yuhan; Zhang, Chaoran
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Neutrino follow-up with the Zwicky transient facility: results from the first 24 campaigns
err2023-03-20
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errStein, Robert; Reusch, Simeon; Franckowiak, Anna; Kowalski, Marek; Necker, Jannis; Weimann, Sven; Kasliwal, Mansi M.; Sollerman, Jesper; Ahumada, Tomas; Seoane, Pau Amaro; Anand, Shreya; Andreoni, Igor; Bellm, Eric C.; Bloom, Joshua S.; Coughlin, Michael; De, Kishalay; Fremling, Christoffer; Gezari, Suvi; Graham, Matthew; Groom, Steven L.; Helou, George; Kaplan, David L.; Karambelkar, Viraj; Kong, Albert K. H.; Kool, Erik C.; Lincetto, Massimiliano; Mahabal, Ashish A.; Masci, Frank J.; Medford, Michael S.; Morgan, Robert; Nordin, Jakob; Rodriguez, Hector; Sharma, Yashvi; van Santen, Jakob; van Velzen, Sjoert; Yan, Lin
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A Light in the Dark: Searching for Electromagnetic Counterparts to Black Hole-Black Hole Mergers in LIGO/Virgo O3 with the Zwicky Transient Facility
err2023-01-17
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errGraham, Matthew J.; McKernan, Barry; Ford, K. E. Saavik; Stern, Daniel; Djorgovski, S. G.; Coughlin, Michael; Burdge, Kevin B.; Bellm, Eric C.; Helou, George; Mahabal, Ashish A.; Masci, Frank J.; Purdum, Josiah; Rosnet, Philippe; Rusholme, Ben
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Discovery of the First Known Asteroid Confined within the Orbit of Venus
err2022-08-10
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errIp, Wing-Huen; Masci, Frank J.; Ye, Quanzhi; Kramer, Emily A.; Helou, George; Prince, Thomas A.; Kulkarni, S. R.; Dekany, Richard; Drake, Andrew; Graham, Matthew J.; Groom, Steven; Laher, Russ R.; Mahabal, Ashish A.; Rusholme, Ben
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Best Practices for Data Publication in the Astronomical Literature
err2022-05-04
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errChen, Tracy X.; Schmitz, Marion; Mazzarella, Joseph M.; Wu, Xiuqin; van Eyken, Julian C.; Accomazzi, Alberto; Akeson, Rachel L.; Allen, Mark; Beaton, Rachael; Berriman, G. Bruce; Boyle, Andrew W.; Brouty, Marianne; Chan, Ben H. P.; Christiansen, Jessie L.; Ciardi, David R.; Cook, David; D'Abrusco, Raffaele; Ebert, Rick; Frayer, Cren; Fulton, Benjamin J.; Gelino, Christopher; Helou, George; Henderson, Calen B.; Howell, Justin; Kim, Joyce; Landais, Gilles; Lo, Tak; Loup, Cecile; Madore, Barry; Monari, Giacomo; Muench, August; Oberto, Anais; Ocvirk, Pierre; Peek, Joshua E. G.; Perret, Emmanuelle; Pevunova, Olga; Ramirez, Solange, V; Rebull, Luisa; Shemmer, Ohad; Smale, Alan; Tam, Raymond; Terek, Scott; Van Orsow, Doug; Vannier, Patricia; Wang, Shin-Ywan
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