Search Results - "Mahabal, A. A."

Candidate Electromagnetic Counterpart to the Binary Black Hole Merger Gravitational-Wave Event S190521g by Graham, M. J., Ford, K. E. S., McKernan, B., Ross, N. P., Stern, D., Burdge, K., Coughlin, M., Djorgovsk, S. G., Drake, A. J., Duev, D., Kasliwal, M., Mahabal, A. A., Velzen, S. van, Belecki, J., Bellm, E. C., Burruss, R., Cenko, S. B., Cunningham, V., Helou, G., Kulkarni, S. R., Masci, F. J., Prince, T., Reiley, D., Rodriguez, H., Rusholme, B., Smith, R. M., Soumagnac, M. T.

“…We report the first plausible optical electromagnetic counterpart to a (candidate) binary black hole merger. Detected by the Zwicky Transient Facility, the…”
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ZTF Early Observations of Type Ia Supernovae. II. First Light, the Initial Rise, and Time to Reach Maximum Brightness by Miller, A. A., Yao, Y., Bulla, M., Pankow, C., Bellm, E. C., Cenko, S. B., Dekany, R., Fremling, C., Graham, M. J., Kupfer, T., Laher, R. R., Mahabal, A. A., Masci, F. J., Nugent, P. E., Riddle, R., Rusholme, B., Smith, R. M., Shupe, D. L., Roestel, J. van, Kulkarni, S. R.

“…While it is clear that Type Ia supernovae (SNe) are the result of thermonuclear explosions in C/O white dwarfs (WDs), a great deal remains uncertain about the…”
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Cataclysmic variables from the Catalina Real-time Transient Survey by Drake, A. J., Gänsicke, B. T., Djorgovski, S. G., Wils, P., Mahabal, A. A., Graham, M. J., Yang, T.-C., Williams, R., Catelan, M., Prieto, J. L., Donalek, C., Larson, S., Christensen, E.

“…We present 855 cataclysmic variable candidates detected by the Catalina Real-time Transient Survey (CRTS) of which at least 137 have been spectroscopically…”
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Clustering on very small scales from a large sample of confirmed quasar pairs: does quasar clustering track from Mpc to kpc scales? by Eftekharzadeh, S., Myers, A. D., Hennawi, J. F., Djorgovski, S. G., Richards, G. T., Mahabal, A. A., Graham, M. J.

“…Abstract We present the most precise estimate to date of the clustering of quasars on very small scales, based on a sample of 47 binary quasars with magnitudes…”
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A systematic search for close supermassive black hole binaries in the Catalina Real-time Transient Survey by Graham, Matthew J., Djorgovski, S. G., Stern, Daniel, Drake, Andrew J., Mahabal, Ashish A., Donalek, Ciro, Glikman, Eilat, Larson, Steve, Christensen, Eric

“…Hierarchical assembly models predict a population of supermassive black hole (SMBH) binaries. These are not resolvable by direct imaging but may be detectable…”
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Discovery of ∼9000 new RR Lyrae in the southern Catalina surveys by Torrealba, G., Catelan, M., Drake, A. J., Djorgovski, S. G., McNaught, R. H., Belokurov, V., Koposov, S., Graham, M. J., Mahabal, A., Larson, S., Christensen, E.

“…We present the results of a deep, wide-area variability survey in the Southern hemisphere, the first of its kind. As part of the Catalina Sky Surveys, the…”
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First Results from the Catalina Real-Time Transient Survey by Drake, A. J, Djorgovski, S. G, Mahabal, A, Beshore, E, Larson, S, Graham, M. J, Williams, R, Christensen, E, Catelan, M, Boattini, A, Gibbs, A, Hill, R, Kowalski, R

“…We report on the results from the first six months of the Catalina Real-Time Transient Survey (CRTS). In order to search for optical transients (OTs) with…”
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A highly magnetized and rapidly rotating white dwarf as small as the Moon by Caiazzo, Ilaria, Burdge, Kevin B., Fuller, James, Heyl, Jeremy, Kulkarni, S. R., Prince, Thomas A., Richer, Harvey B., Schwab, Josiah, Andreoni, Igor, Bellm, Eric C., Drake, Andrew, Duev, Dmitry A., Graham, Matthew J., Helou, George, Mahabal, Ashish A., Masci, Frank J., Smith, Roger, Soumagnac, Maayane T.

“…White dwarfs represent the last stage of evolution of stars with mass less than about eight times that of the Sun and, like other stars, are often found in…”
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A Family Tree of Optical Transients from Narrow-line Seyfert 1 Galaxies by Frederick, Sara, Gezari, Suvi, Graham, Matthew J., Sollerman, Jesper, van Velzen, Sjoert, Perley, Daniel A., Stern, Daniel, Ward, Charlotte, Hammerstein, Erica, Hung, Tiara, Yan, Lin, Andreoni, Igor, Bellm, Eric C., Duev, Dmitry A., Kowalski, Marek, Mahabal, Ashish A., Masci, Frank J., Medford, Michael, Rusholme, Ben, Smith, Roger, Walters, Richard

“…Abstract The Zwicky Transient Facility (ZTF) has discovered five events (0.01 < z < 0.4) belonging to an emerging class of active galactic nuclei (AGNs)…”
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Results of a systematic search for outburst events in 1.4 million galaxies by Drake, A J, Djorgovski, S G, Graham, M J, Stern, D, Mahabal, A A, Catelan, M, Christensen, E, Larson, S

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RoboPol: connection between optical polarization plane rotations and gamma-ray flares in blazars by Blinov, D., Pavlidou, V., Papadakis, I., Kiehlmann, S., Liodakis, I., Panopoulou, G. V., Angelakis, E., Baloković, M., Hovatta, T., King, O. G., Kus, A., Kylafis, N., Mahabal, A., Maharana, S., Myserlis, I., Paleologou, E., Papamastorakis, I., Pazderski, E., Pearson, T. J., Ramaprakash, A., Readhead, A. C. S., Reig, P., Tassis, K., Zensus, J. A.

“…Abstract We use results of our 3 yr polarimetric monitoring programme to investigate the previously suggested connection between rotations of the polarization…”
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General relativistic orbital decay in a seven-minute-orbital-period eclipsing binary system by Burdge, Kevin B., Coughlin, Michael W., Fuller, Jim, Kupfer, Thomas, Bellm, Eric C., Bildsten, Lars, Graham, Matthew J., Kaplan, David L., Roestel, Jan van, Dekany, Richard G., Duev, Dmitry A., Feeney, Michael, Giomi, Matteo, Helou, George, Kaye, Stephen, Laher, Russ R., Mahabal, Ashish A., Masci, Frank J., Riddle, Reed, Shupe, David L., Soumagnac, Maayane T., Smith, Roger M., Szkody, Paula, Walters, Richard, Kulkarni, S. R., Prince, Thomas A.

“…General relativity 1 predicts that short-orbital-period binaries emit considerable amounts of gravitational radiation. The upcoming Laser Interferometer Space…”
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RoboPol: the optical polarization of gamma-ray-loud and gamma-ray-quiet blazars by Angelakis, E, Hovatta, T, Blinov, D, Pavlidou, V, Kiehlmann, S, Myserlis, I, Bottcher, M, Mao, P, Panopoulou, G V, Liodakis, I, King, O G, Balokovic, M, Kus, A, Kylafis, N, Mahabal, A, Marecki, A, Paleologou, E, Papadakis, I, Papamastorakis, I, Pazderski, E, Pearson, T J, Prabhudesai, S, Ramaprakash, A N, Readhead, A C S, Reig, P, Tassis, K, Urry, M, Zensus, J A

“…We present average R-band optopolarimetric data, as well as variability parameters, from the first and second RoboPol observing season. We investigate whether…”
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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 by Graham, 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

“…Abstract The accretion disks of active galactic nuclei (AGNs) are promising locations for the merger of compact objects detected by gravitational wave (GW)…”
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RoboPol: first season rotations of optical polarization plane in blazars by Blinov, D., Pavlidou, V., Papadakis, I., Kiehlmann, S., Panopoulou, G., Liodakis, I., King, O. G., Angelakis, E., Baloković, M., Das, H., Feiler, R., Fuhrmann, L., Hovatta, T., Khodade, P., Kus, A., Kylafis, N., Mahabal, A., Myserlis, I., Modi, D., Pazderska, B., Pazderski, E., Papamastorakis, I., Pearson, T. J., Rajarshi, C., Ramaprakash, A., Reig, P., Readhead, A. C. S., Tassis, K., Zensus, J. A.

“…We present first results on polarization swings in optical emission of blazars obtained by RoboPol, a monitoring programme of an unbiased sample of gamma-ray…”
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The Zwicky Transient Facility Bright Transient Survey. I. Spectroscopic Classification and the Redshift Completeness of Local Galaxy Catalogs by Fremling, C., Miller, A. A., Sharma, Y., Dugas, A., Perley, D. A., Taggart, K., Sollerman, J., Goobar, A., Graham, M. L., Neill, J. D., Nordin, J., Rigault, M., Walters, R., Andreoni, I., Bagdasaryan, A., Belicki, J., Cannella, C., Bellm, E. C., Cenko, S. B., De, K., Dekany, R., Frederick, S., Golkhou, V. Z., Graham, M. J., Helou, G., Ho, A. Y. Q., Kasliwal, M. M., Kupfer, T., Laher, R. R., Mahabal, A., Masci, F. J., Riddle, R., Rusholme, B., Schulze, S., Shupe, D. L., Smith, R. M., Velzen, S. van, Yan, Lin, Yao, Y., Zhuang, Z., Kulkarni, S. R.

“…The Zwicky Transient Facility (ZTF) is performing a three-day cadence survey of the visible northern sky (∼3π) with newly found transient candidates announced…”
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PROBING THE OUTER GALACTIC HALO WITH RR LYRAE FROM THE CATALINA SURVEYS by Drake, A J, Catelan, M, Djorgovski, S G, Torrealba, G, Graham, M J, Belokurov, V, Koposov, S E, Mahabal, A, Prieto, J L, Donalek, C, Williams, R, Larson, S, Christensen, E, BESHORE, E

“…We present analysis of 12,227 type-ab RR Lyraes (RRLs) found among the 200 million public light curves in Catalina Surveys Data Release 1. These stars span the…”
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RoboPol: a four-channel optical imaging polarimeter by Ramaprakash, A N, Rajarshi, C V, Das, H K, Khodade, P, Modi, D, Panopoulou, G, Maharana, S, Blinov, D, Angelakis, E, Casadio, C, Fuhrmann, L, Hovatta, T, Kiehlmann, S, King, O G, Kylafis, N, Kougentakis, A, Kus, A, Mahabal, A, Marecki, A, Myserlis, I, Paterakis, G, Paleologou, E, Liodakis, I, Papadakis, I, Papamastorakis, I, Pavlidou, V, Pazderski, E, Pearson, T J, Readhead, A C S, Reig, P, Słowikowska, A, Tassis, K, Zensus, J A

“…ABSTRACT We present the design and performance of RoboPol, a four-channel optical polarimeter operating at the Skinakas Observatory in Crete, Greece. RoboPol…”
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Deep Modeling of Quasar Variability by Tachibana, Yutaro, Graham, Matthew J., Kawai, Nobuyuki, Djorgovski, S. G., Drake, Andrew J., Mahabal, Ashish A., Stern, Daniel

“…Quasars have long been known as intrinsically variable sources, but the physical mechanism underlying the temporal optical/UV variability is still not well…”
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Variability in Low Ionization Broad Absorption Line outflows by Vivek, M., Srianand, R., Petitjean, P., Mohan, V., Mahabal, A., Samui, S.

“…We present results of our time variability studies of Mg ii and Al iii absorption lines in a sample of 22 Low Ionization Broad Absorption Line QSOs (LoBAL…”
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