Alcock, Charles
Director, Harvard-Smithsonian Center for Astrophysics
Large astronomical surveys; outer solar system; cosmic dark matter; astronomical data mining; virtual observatory technologies.
Background And Education
Education And Training
Publications
Selected Publications
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Article
- Waters, Thomas K., Peterson, Colton, Emami, Razieh, Shen, Xuejian, Hernquist, Lars, Smith, Randall, Vogelsberger, Mark, Alcock, Charles, Tremblay, Grant, Liska, Matthew, Forbes, John C., and Moreno, Jorge. 2024. "Gas Morphology of Milky Way–like Galaxies in the TNG50 Simulation: Signals of Twisting and Stretching." The Astrophysical Journal, 961 193. https://doi.org/10.3847/1538-4357/ad165a. 2024
- Emami, Razieh, Anantua, Richard, Ricarte, Angelo, Doeleman, Sheperd S., Broderick, Avery, Wong, George, Blackburn, Lindy, Wielgus, Maciek, Narayan, Ramesh, Tremblay, Grant, Alcock, Charles, Hernquist, Lars, Smith, Randall, Liska, Matthew, Natarajan, Priyamvada, Vogelsberger, Mark, Curd, Brandon, and Kramer, Joana A. 2023. "Probing Plasma Composition with the Next Generation Event Horizon Telescope (ngEHT)." Galaxies, 11 11. https://doi.org/10.3390/galaxies11010011. 2023
- Emami, Razieh, Doeleman, Sheperd S., Wielgus, Maciek, Chang, Dominic, Chatterjee, Koushik, Smith, Randall, Liska, Matthew, Steiner, James F., Ricarte, Angelo, Narayan, Ramesh, Tremblay, Grant, Finkbeiner, Douglas, Hernquist, Lars, Chan, Chi-kwan, Blackburn, Lindy, Prather, Ben S., Tiede, Paul, Broderick, Avery E., Vogelsberger, Mark, Alcock, Charles, and Roelofs, Freek. 2023. "The EB Correlation in Resolved Polarized Images: Connections to the Astrophysics of Black Holes." The Astrophysical Journal, 955 6. https://doi.org/10.3847/1538-4357/acdc96. 2023
- Pereira, C. L., Sicardy, B., Morgado, B. E., Braga-Ribas, F., Fernández-Valenzuela, E., Souami, D., Holler, B. J., Boufleur, R. C., Margoti, G., Assafin, M., Ortiz, J. L., Santos-Sanz, P., Epinat, B., Kervella, P., Desmars, J., Vieira-Martins, R., Kilic, Y., Gomes Júnior, A. R., Camargo, J. I. B., Emilio, M., Vara-Lubiano, M., Kretlow, M., Albert, L., Alcock, Charles, Ball, J. G. et al. 2023. "The two rings of (50000) Quaoar." Astronomy and Astrophysics, 673. https://doi.org/10.1051/0004-6361/202346365. 2023
- Emami, Razieh, Tiede, Paul, Doeleman, Sheperd S., Roelofs, Freek, Wielgus, Maciek, Blackburn, Lindy, Liska, Matthew, Chatterjee, Koushik, Ripperda, Bart, Fuentes, Antonio, Broderick, Avery E., Hernquist, Lars, Alcock, Charles, Narayan, Ramesh, Smith, Randall, Tremblay, Grant, Ricarte, Angelo, Sun, He, Anantua, Richard, Kovalev, Yuri Y., Natarajan, Priyamvada, and Vogelsberger, Mark. 2023. "Tracing Hot Spot Motion in Sagittarius A* Using the Next-Generation Event Horizon Telescope (ngEHT)." Galaxies, 11 23. https://doi.org/10.3390/galaxies11010023. 2023
- Emami, Razieh, Ricarte, Angelo, Wong, George N., Palumbo, Daniel, Chang, Dominic, Doeleman, Sheperd S., Broderick, Avery E., Narayan, Ramesh, Wielgus, Maciek, Blackburn, Lindy, Prather, Ben S., Chael, Andrew A., Anantua, Richard, Chatterjee, Koushik, Marti-Vidal, Ivan, Gómez, Jose L., Akiyama, Kazunori, Liska, Matthew, Hernquist, Lars, Tremblay, Grant, Vogelsberger, Mark, Alcock, Charles, Smith, Randall, Steiner, James, Tiede, Paul et al. 2023. "Unraveling Twisty Linear Polarization Morphologies in Black Hole Images." The Astrophysical Journal, 950 38. https://doi.org/10.3847/1538-4357/acc8cd. 2023
- Silva-Cabrera, José Sergio, Castro-Chacón, Joel Humberto, Reyes-Ruiz, Mauricio, Lehner, Matthew J., Guerrero, Carlos Alberto, Huang, Chung-Kai, Alvarez-Santana, Fernando Iván, Chang, Yin-Chang, Ling, Hung-Hsu, Porras-Navarro, Issac, Hernández-Ãguila, Joannes Bosco, Pérez-Arce, Rosa L., Rojas-Quintero, Juan Antonio, Avila, Remy, Wang, Shiang-Yu, Alcock, Charles, Chen, Wen-Ping, Granados Contreras, Agueda Paula, Cook, Kem H., Geary, John C., Hernández-Valencia, BenajmÃn, Kavelaars, J. J., Norton, Timothy, Sánchez, Edilberto, Szentgyorgyi, Andrew et al. 2022. "2018 August 15 stellar occultation by minor planet (134340) Pluto." Monthly Notices of the Royal Astronomical Society, 511 5550–5559. https://doi.org/10.1093/mnras/stac401. 2022
- Hernández-Valencia, B., Castro-Chacón, J. H., Reyes-Ruiz, M., Lehner, Matthew J., Guerrero, C. A., Silva, J. S., Hernández-Águila, J. B., Alvarez-Santana, F. I., Sánchez, E., Nuñez, J. M., Calvario-Velásquez, L. T., Figueroa, Liliana, Huang, C. -K, Wang, Shiang-Yu, Alcock, Charles, Chen, W. -P, Granados Contreras, Agueda Paula, Geary, John C., Cook, K. H., Kavelaars, J. J., Norton, Tim, Szentgyorgyi, Andrew, Yen, W. -L, Zhang, Z. -W, and Olague, G. 2022. "Pattern Recognition Using SVM for the Classification of the Size and Distance of Trans-Neptunian Objects Detected by Serendipitous Stellar Occultations." Publications of the Astronomical Society of the Pacific, 134 084501. https://doi.org/10.1088/1538-3873/ac7f5c. 2022
- Emami, Razieh, Genel, Shy, Hernquist, Lars, Alcock, Charles, Bose, Sownak, Weinberger, Rainer, Vogelsberger, Mark, Marinacci, Federico, Loeb, Abraham, Torrey, Paul, and Forbes, John C. 2021. "Morphological Types of DM Halos in Milky Way-like Galaxies in the TNG50 Simulation: Simple, Twisted, or Stretched." The Astrophysical Journal, 913 36. https://doi.org/10.3847/1538-4357/abf147. 2021
- Huang, Chung-Kai, Lehner, Matthew J., Granados Contreras, Agueda Paula, Castro-Chacón, Joel H., Chen, Wen-Ping, Alcock, Charles, Alvarez-Santana, Fernando I., Cook, Kem H., Geary, John C., Guerrero Peña, Carlos Alberto, Hernández-Águila, Joannes Bosco, Hernández-Valencia, Benjamín, Karr, Jennifer, Kavelaars, J. J., Norton, Timothy, Nuñez, Juan Manuel, Ochoa, Diego, Reyes-Ruiz, Mauricio, Sánchez, Edilberto, Silva, José Sergio, Szentgyorgyi, Andrew, Wang, Shiang-Yu, Yen, Wei-Ling, and Zhang, Zhi-Wei. 2021. "The TAOS II Survey: Real-time Detection and Characterization of Occultation Events." Publications of the Astronomical Society of the Pacific, 133 034503. https://doi.org/10.1088/1538-3873/abd4bc. 2021
- Castro-Chacón, J. H., Reyes-Ruiz, M., Lehner, Matthew J., Zhang, Z. -W, Alcock, Charles A., Guerrero, C. A., Hernández-Valencia, B., Hernández-Águila, J. B., Nuñez, J. M., Salinas-Luna, J., Silva, J. S., Alexandersen, Mike, Alvarez-Santana, F. I., Chen, W. -P, Chu, Y. -H, Cook, K. H., García-Díaz, Ma T., Geary, John C., Huang, C. -K, Kavelaars, JJ, Norton, T., Szentgyorgyi, Andrew H., Carvajal, J. C., Sánchez, E., Yen, W. -L et al. 2019. "Occultations by Small Non-spherical Trans-Neptunian Objects. I. A New Event Simulator for TAOS II." Publications of the Astronomical Society of the Pacific, 131 064401. https://doi.org/10.1088/1538-3873/ab152e. 2019
- Holler, Bryan J., Milam, Stefanie N., Bauer, James M., Alcock, Charles, Bannister, Michele T., Bjoraker, Gordon L., Bodewits, Dennis, Bosh, Amanda S., Buie, Marc W., Farnham, Tony L., Haghighipour, Nader, Hardersen, Paul S., Harris, Alan W., Hirata, Christopher M., Hsieh, Henry H., Kelley, Michael S. P., Knight, Matthew M., Kramer, Emily A., Longobardo, Andrea, Nixon, Conor A., Palomba, Ernesto, Protopapa, Silvia, Quick, Lynnae C., Ragozzine, Darin, Reddy, Vishnu et al. 2018. "Solar system science with the Wide-Field Infrared Survey Telescope." Journal of Astronomical Telescopes, Instruments, and Systems, 4, (3) 034003–034003. https://doi.org/10.1117/1.JATIS.4.3.034003. 2018
- Zivick, Paul, Kallivayalil, Nitya, van der Marel, Roeland P., Besla, Gurtina, Linden, Sean T., Kozłowski, Szymon, Fritz, Tobias K., Kochanek, C. S., Anderson, J., Sohn, Sangmo Tony, Geha, Marla C., and Alcock, Charles R. 2018. "The Proper Motion Field of the Small Magellanic Cloud: Kinematic Evidence for Its Tidal Disruption." The Astrophysical Journal, 864 55. https://doi.org/10.3847/1538-4357/aad4b0. 2018
- Kimura, Mariko, Isogai, Keisuke, Kato, Taichi, Ueda, Yoshihiro, Nakahira, Satoshi, Shidatsu, Megumi, Enoto, Teruaki, Hori, Takafumi, Nogami, Daisaku, Littlefield, Colin, Ishioka, Ryoko, Chen, Ying-Tung, King, Sun-Kun, Wen, Chih-Yi, Wang, Shiang-Yu, Lehner, Matthew J., Schwamb, Megan E., Wang, Jen-Hung, Zhang, Zhi-Wei, Alcock, Charles, Axelrod, Tim, Bianco, Federica B., Byun, Yong-Ik, Chen, Wen-Ping, Cook, Kem H. et al. 2016. "Repetitive patterns in rapid optical variations in the nearby black-hole binary V404 Cygni." Nature, 529 54–58. https://doi.org/10.1038/nature16452. 2016
- Ishioka, R., Wang, S. -Y, Zhang, Z. -W, Lehner, Matthew J., Alcock, Charles A., Axelrod, T., Bianco, F. B., Byun, Y. -I, Chen, W. P., Cook, K. H., Kim, D. -W, King, S. -K, Lee, T., Marshall, S. L., Protopapas, P., Rice, J. A., Schwamb, M. E., Wang, J. -H, Wen, C. -Y, and Ngeow, C. -C. 2014. "The Taiwanese-American Occultation Survey Project Stellar Variability. III. Detection of 58 New Variable Stars." The Astronomical Journal, 147 70. https://doi.org/10.1088/0004-6256/147/4/70. 2014
- Zhang, Z. -W, Lehner, Matthew J., Wang, J. -H, Wen, C. -Y, Wang, S. -Y, King, S. -K, Granados, Á. P., Alcock, Charles A., Axelrod, T., Bianco, F. B., Byun, Y. -I, Chen, W. P., Coehlo, N. K., Cook, K. H., de Pater, I., Kim, D. -W, Lee, T., Lissauer, J. J., Marshall, S. L., Protopapas, P., Rice, J. A., and Schwamb, M. E. 2013. "The TAOS Project: Results from Seven Years of Survey Data." The Astronomical Journal, 146 14. https://doi.org/10.1088/0004-6256/146/1/14. 2013
- Kallivayalil, Nitya, van, der Marel, Besla, Gurtina, Anderson, Jay, and Alcock, Charles A. 2013. "Third-epoch Magellanic Cloud Proper Motions. I. Hubble Space Telescope/WFC3 Data and Orbit Implications." The Astrophysical Journal, 764 161. https://doi.org/10.1088/0004-637X/764/2/161. 2013
- Kim, Dae-Won, Protopapas, Pavlos, Trichas, Markos, Rowan-Robinson, Michael, Khardon, Roni, Alcock, Charles A., and Byun, Yong-Ik. 2012. "A Refined QSO Selection Method Using Diagnostics Tests: 663 QSO Candidates in the Large Magellanic Cloud." The Astrophysical Journal, 747 107. https://doi.org/10.1088/0004-637X/747/2/107. 2012
- Lehner, Matthew J., Wang, Shiang-Yu, Alcock, Charles A., Cook, Kem H., Furesz, Gabor, Geary, John C., Hiriart, David, Ho, Paul T., Lee, William, Melsheimer, Frank, Norton, Timothy, Reyes-Ruiz, Mauricio, Richer, Michael, Szentgyorgyi, Andrew H., Yen, Wei-Ling, and Zhang, Zhi-Wei. 2012. "The Transneptunian Automated Occultation Survey (TAOS II)." Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 8444. https://doi.org/10.1117/12.925541. 2012
- Kim, Dae-Won, Protopapas, Pavlos, Byun, Yong-Ik, Alcock, Charles A., Khardon, Roni, and Trichas, Markos. 2011. "Quasi-stellar Object Selection Algorithm Using Time Variability and Machine Learning: Selection of 1620 Quasi-stellar Object Candidates from MACHO Large Magellanic Cloud Database." The Astrophysical Journal, 735 68. https://doi.org/10.1088/0004-637X/735/2/68. 2011
- Kallivayalil, Nitya, Besla, Gurtina, Sanderson, Robyn, and Alcock, Charles A. 2009. "Revisiting the Role of M31 in the Dynamical History of the Magellanic Clouds." The Astrophysical Journal, 700 924–930. https://doi.org/10.1088/0004-637X/700/2/924. 2009
- Prsa, A., Guinan, E. F., Devinney, E. J., DeGeorge, M., Bradstreet, D. H., Giammarco, J. M., Alcock, C. R., and Engle, S. G. 2008. "Artificial Intelligence Approach to the Determination of Physical Properties of Eclipsing Binaries. I. The EBAI Project." The Astrophysical Journal, 687 542–565. 2008
- Faccioli, Lorenzo, Alcock, Charles A., and Cook, Kem. 2008. "Post-Main-Sequence Orbital Circularization of Binary Stars in the Large and Small Magellanic Clouds." The Astrophysical Journal, 672 604–622. 2008
Contact
Location
- Smithsonian Astrophysical Observatory Academic Department