Search Results - "Korista, K."

Quantifying the impact of variable BLR diffuse continuum contributions on measured continuum interband delays by Korista, K T, Goad, M R

“…ABSTRACT We investigate the contribution of reprocessed continuum emission (1000–10 000 Å) originating in broad-line region (BLR) gas, the diffuse continuum…”
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Quantifying the diffuse continuum contribution of BLR Clouds to AGN Continuum Inter-band Delays by Lawther, D, Goad, M R, Korista, K T, Ulrich, O, Vestergaard, M

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The broad emission-line region: the confluence of the outer accretion disc with the inner edge of the dusty torus by Goad, M. R., Korista, K. T., Ruff, A. J.

“…Abstract We have investigated the observational characteristics of a class of broad emission line region (BLR) geometries that connect the outer accretion disc…”
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The First Swift Intensive AGN Accretion Disk Reverberation Mapping Survey by Edelson, R., Gelbord, J., Cackett, E., Peterson, B. M., Horne, K., Barth, A. J., Starkey, D. A., Bentz, M., Brandt, W. N., Goad, M., Joner, M., Korista, K., Netzer, H., Page, K., Uttley, P., Vaughan, S., Breeveld, A., Cenko, S. B., Done, C., Evans, P., Fausnaugh, M., Ferland, G., Gonzalez-Buitrago, D., Gropp, J., Grupe, D., Kaastra, J., Kennea, J., Kriss, G., Mathur, S., Mehdipour, M., Mudd, D., Nousek, J., Schmidt, T., Vestergaard, M., Villforth, C.

“…Swift intensive accretion disk reverberation mapping of four AGN yielded light curves sampled ∼200-350 times in 0.3-10 keV X-ray and six UV/optical bands…”
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Interpreting broad emission-line variations – I. Factors influencing the emission-line response by Goad, M. R., Korista, K. T.

“…We investigate the sensitivity of the measured broad emission-line responsivity dlog f line/dlog f cont to continuum variations in the context of straw-man…”
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The Changing-look Quasar Mrk 590 Is Awakening by Mathur, S., Denney, K. D., Gupta, A., Vestergaard, M., De Rosa, G., Krongold, Yair, Nicastro, F., Collinson, J., Goad, M., Korista, K., Pogge, R. W., Peterson, B. M.

“…Mrk 590 was originally classified as a Seyfert 1 galaxy, but then it underwent dramatic changes: the nuclear luminosity dropped by over two orders of magnitude…”
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Swift Monitoring of NGC 4151: Evidence for a Second X-Ray/UV Reprocessing by Edelson, R., Gelbord, J., Cackett, E., Connolly, S., Done, C., Fausnaugh, M., Gardner, E., Gehrels, N., Goad, M., Horne, K., McHardy, I., Peterson, B. M., Vaughan, S., Vestergaard, M., Breeveld, A., Barth, A. J., Bentz, M., Bottorff, M., Brandt, W. N., Crawford, S. M., Bontà, E. Dalla, Emmanoulopoulos, D., Evans, P., Jaimes, R. Figuera, Filippenko, A. V., Ferland, G., Grupe, D., Joner, M., Kennea, J., Korista, K. T., Krimm, H. A., Kriss, G., Leonard, D. C., Mathur, S., Netzer, H., Nousek, J., Page, K., Romero-Colmenero, E., Siegel, M., Starkey, D. A., Treu, T., Vogler, H. A., Winkler, H., Zheng, W.

“…Swift monitoring of NGC 4151 with an ∼6 hr sampling over a total of 69 days in early 2016 is used to construct light curves covering five bands in the X-rays…”
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SPACE TELESCOPE AND OPTICAL REVERBERATION MAPPING PROJECT.VI. REVERBERATING DISK MODELS FOR NGC 5548 by Starkey, D., Horne, Keith, Fausnaugh, M. M., Peterson, B. M., Bentz, M. C., Kochanek, C. S., Denney, K. D., Edelson, R., Goad, M. R., Rosa, G. De, Anderson, M. D., Arévalo, P., Barth, A. J., Bazhaw, C., Borman, G. A., Boroson, T. A., Bottorff, M. C., Brandt, W. N., Breeveld, A. A., Cackett, E. M., Carini, M. T., Croxall, K. V., Crenshaw, D. M., Bontà, E. Dalla, Lorenzo-Cáceres, A. De, Dietrich, M., Efimova, N. V., Ely, J., Evans, P. A., Filippenko, A. V., Flatland, K., Gehrels, N., Geier, S., Gelbord, J. M., Gonzalez, L., Gorjian, V., Grier, C. J., Grupe, D., Hall, P. B., Hicks, S., Horenstein, D., Hutchison, T., Im, M., Jensen, J. J., Joner, M. D., Jones, J., Kaastra, J., Kaspi, S., Kelly, B. C., Kennea, J. A., Kim, S. C., Kim, M., Klimanov, S. A., Korista, K. T., Kriss, G. A., Lee, J. C., Leonard, D. C., Lira, P., MacInnis, F., Manne-Nicholas, E. R., Mathur, S., McHardy, I. M., Montouri, C., Musso, R., Nazarov, S. V., Norris, R. P., Nousek, J. A., Okhmat, D. N., Pancoast, A., Parks, J. R., Pei, L., Pogge, R. W., Pott, J.-U., Rafter, S. E., Rix, H.-W., Saylor, D. A., Schimoia, J. S., Schnülle, K., Sergeev, S. G., Siegel, M. H., Spencer, M., Sung, H.-I., Teems, K. G., Turner, C. S., Uttley, P., Vestergaard, M., Villforth, C., Weiss, Y., Woo, J.-H., Yan, H., Young, and S., Zheng, W., Zu, Y.

“…ABSTRACT We conduct a multiwavelength continuum variability study of the Seyfert 1 galaxy NGC 5548 to investigate the temperature structure of its accretion…”
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On the multiwavelength variability of Mrk 110: two components acting at different time-scales by Vincentelli, F M, McHardy, I, Cackett, E M, Barth, A J, Horne, K, Goad, M, Korista, K, Gelbord, J, Brandt, W, Edelson, R, Miller, J A, Pahari, M, Peterson, B M, Schmidt, T, Baldi, R D, Breedt, E, Hernández Santisteban, J V, Romero-Colmenero, E, Ward, M, Williams, D R A

“…ABSTRACT We present the first intensive continuum reverberation mapping study of the high accretion-rate Seyfert galaxy Mrk 110. The source was monitored…”
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X-ray/UV/optical variability of NGC 4593 with Swift: reprocessing of X-rays by an extended reprocessor by McHardy, I M, Connolly, S D, Horne, K, Cackett, E M, Gelbord, J, Peterson, B M, Pahari, M, Gehrels, N, Goad, M, Lira, P, Arevalo, P, Baldi, R D, Brandt, N, Breedt, E, Chand, H, Dewangan, G, Done, C, Elvis, M, Emmanoulopoulos, D, Fausnaugh, M M, Kaspi, S, Kochanek, C S, Korista, K, Papadakis, I E, Rao, A R, Uttley, P, Vestergaard, M, Ward, M J

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Interpreting broad emission-line variations – II. Tensions between luminosity, characteristic size, and responsivity by Goad, M. R., Korista, K. T.

“…We investigate the variability behaviour of the broad H β emission-line to driving continuum variations in the best-studied AGN NGC 5548. For a particular…”
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Space Telescope and Optical Reverberation Mapping Project. IX. Velocity–Delay Maps for Broad Emission Lines in NGC 5548 by Rosa, G. De, Ely, J., Kriss, G. A., Bentz, M. C., Edelson, R., Eracleous, M., Goad, M. R., Grier, C. J., Krongold, Y., Mathur, S., Netzer, H., Proga, D., Vestergaard, M., Adams, S. M., Bennert, V. N., Bigley, A., Bisogni, S., Borman, G. A., Boroson, T. A., Bottorff, M. C., Brandt, W. N., Breeveld, A. A., Brotherton, M., Brown, J. E., Brown, J. S., Canalizo, G., Carini, M. T., Clubb, K. I., Crenshaw, D. M., Croft, S., Croxall, K. V., Bontà, E. Dalla, Deason, A. J., Dehghanian, M., Denney, K. D., Dietrich, M., Done, C., Evans, P. A., Ferland, G. J., Gates, E. L., Gelbord, J. M., Gonzalez, L., Grupe, D., Hall, P. B., Holmbeck, E., Holoien, T. W.-S., Im, M., Jensen, J. J., Johnson, C. A., Joner, M. D., Kennea, J. A., Kim, M., Kim, S. C., Klimanov, S. A., Lau, M. W., Lee, J. C., Lira, P., Lochhaas, C., MacInnis, F., Malkan, M. A., Mauerhan, J. C., McGurk, R., Mosquera, A., Mudd, D., Nazarov, S. V., Norris, R. P., Nousek, J. A., Nguyen, M. L., Ochner, P., Pancoast, A., Parks, J. R., Penny, M. T., Pizzella, A., Pogge, R. W., Pott, J.-U., Rafter, S. E., Runnoe, J., Saylor, D. A., Schimoia, J. S., Schnülle, K., Sergeev, S. G., Shappee, B. J., Simonian, G. V., Somers, G., Spencer, M., Stevens, D. J., Sung, H.-I., Tayar, J., Treu, T., Turner, C. S., Van Saders, J., Vican, L., Villanueva, S., Weiss, Y., Woo, J.-H., Yan, H., Young, S., Yuk, H., Zheng, W., Zhu, W.

“…Abstract In this contribution, we achieve the primary goal of the active galactic nucleus (AGN) STORM campaign by recovering velocity–delay maps for the…”
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Intensive disc-reverberation mapping of Fairall 9: first year of Swift and LCO monitoring by Santisteban, J V Hernández, Edelson, R, Horne, K, Gelbord, J M, Barth, A. J., Cackett, E M, Goad, M R, Netzer, H, Starkey, D, Uttley, P, Brandt, W N, Korista, K, Lohfink, A M, Onken, C. A., Page, K L, Siegel, M, Vestergaard, M, Bisogni, S., Breeveld, A A, Cenko, S B, Bontà, E. Dalla, Evans, P. A., Ferland, G, Gonzalez-Buitrago, D H, Grupe, D., Joner, M D, Kriss, G, LaPorte, S J, Mathur, S, Marshall, F, Mehdipour, M, Mudd, D., Peterson, B M, Schmidt, T, Vaughan, S, Valenti, S

“…We present results of time-series analysis of the first year of the Fairall 9 intensive disc-reverberation campaign. We used Swift and the Las Cumbres…”
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SPACE TELESCOPE AND OPTICAL REVERBERATION MAPPING PROJECT. I. ULTRAVIOLET OBSERVATIONS OF THE SEYFERT 1 GALAXY NGC 5548 WITH THE COSMIC ORIGINS SPECTROGRAPH ON HUBBLE SPACE TELESCOPE by Rosa, G. De, Peterson, B. M., Ely, J., Kriss, G. A., Crenshaw, D. M., Horne, Keith, Korista, K. T., Netzer, H., Pogge, R. W., Arévalo, P., Barth, A. J., Bentz, M. C., Brandt, W. N., Breeveld, A. A., Brewer, B. J., Dalla Bontà, E., Lorenzo-Cáceres, A. De, Denney, K. D., Dietrich, M., Edelson, R., Evans, P. A., Fausnaugh, M. M., Gehrels, N., Gelbord, J. M., Goad, M. R., Grier, C. J., Grupe, D., Hall, P. B., Kaastra, J., Kelly, B. C., Kennea, J. A., Kochanek, C. S., Lira, P., Mathur, S., McHardy, I. M., Nousek, J. A., Pancoast, A., Papadakis, I., Pei, L., Schimoia, J. S., Siegel, M., Starkey, D., Treu, T., Uttley, P., Vaughan, S., Vestergaard, M., Villforth, C., Yan, H., Young, S., Zu, Y.

“…ABSTRACT We describe the first results from a six-month long reverberation-mapping experiment in the ultraviolet based on 171 observations of the Seyfert 1…”
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Space Telescope and Optical Reverberation Mapping Project. XI. Disk-wind Characteristics and Contributions to the Very Broad Emission Lines of NGC 5548 by Dehghanian, M., Ferland, G. J., Kriss, G. A., Peterson, B. M., Korista, K. T., Goad, M. R., Chatzikos, M., Guzmán, F., Rosa, G. De, Mehdipour, M., Kaastra, J., Mathur, S., Vestergaard, M., Proga, D., Waters, T., Bentz, M. C., Bisogni, S., Brandt, W. N., Bontà, E. Dalla, Fausnaugh, M. M., Gelbord, J. M., Horne, Keith, McHardy, I. M., Pogge, R. W., Starkey, D. A.

“…In 2014 the NGC 5548 Space Telescope and Optical Reverberation Mapping campaign discovered a two-month anomaly when variations in the absorption and emission…”
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Space Telescope and Optical Reverberation Mapping Project. VIII. Time Variability of Emission and Absorption in NGC 5548 Based on Modeling the Ultraviolet Spectrum by Ely, J., Peterson, B. M., Kaastra, J., Mehdipour, M., Edelson, R., Korista, K. T., Arav, N., Bontà, E. Dalla, Done, C., Eracleous, M., Fausnaugh, M. M., Gardner, E., Goad, M. R., McHardy, I. M., Pancoast, A., Pogge, R. W., Proga, D., Silva, C., Tejos, N., Vestergaard, M., Behar, E., Bigley, A., Bisogni, S., Boissay-Malaquin, R., Brown, J. E., Brown, J. S., Cappi, M., Comerford, J. M., Coker, C. T., Corsini, E. M., Costantini, E., Croxall, K. V., Deason, A. J., De Lorenzo-Cáceres, A., De Marco, B., Dietrich, M., Di Gesu, L., Ebrero, J., Gates, E. L., Gehrels, N., Gonzalez, L., Gorjian, V., Grupe, D., Gupta, A., Hicks, S., Holoien, T. W.-S., Hutchison, T. A., Im, M., Johnson, C. A., Joner, M. D., Kaspi, S., Kelly, B. C., Kelly, P. L., Kennea, J. A., Kim, M., Kim, S. Y., King, A., Klimanov, S. A., Lau, M. W., Leonard, D. C., Lochhaas, C., Malkan, M. A., Manne-Nicholas, E. R., Matt, G., Montuori, C., Mosquera, A., Mudd, D., Nazarov, S. V., Nousek, J. A., Ochner, P., Okhmat, D. N., Paltani, S., Pinto, C., Pizzella, A., Poleski, R., Rafter, S. E., Rix, H.-W., Runnoe, J., Scott, B., Sergeev, S. G., Shappee, B. J., Shivvers, I., Simonian, G. V., Siviero, A., Starkey, D., Stevens, D. J., Tayar, J., Treu, T., Turner, C. S., Uttley, P., Van Saders, J ., Vican, L., Villforth, C., Villanueva Jr, S., Walton, D. J., Waters, T., Woo, J.-H., Yan, H., Zheng, W., Zhu, W.

“…We model the ultraviolet spectra of the Seyfert 1 galaxy NGC 5548 obtained with the Hubble Space Telescope during the 6 month reverberation mapping campaign in…”
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Space Telescope and Optical Reverberation Mapping Project. X. Understanding the Absorption-line Holiday in NGC 5548 by Dehghanian, M., Ferland, G. J., Kriss, G. A., Peterson, B. M., Mathur, S., Mehdipour, M., Guzmán, F., Chatzikos, M., van Hoof, P. A. M., Williams, R. J. R., Arav, N., Barth, A. J., Bentz, M. C., Bisogni, S., Brandt, W. N., Crenshaw, D. M., Bontà, E. Dalla, De Rosa, G., Fausnaugh, M. M., Gelbord, J. M., Goad, M. R., Gupta, A., Horne, Keith, Kaastra, J., Knigge, C., Korista, K. T., McHardy, I. M., Pogge, R. W., Starkey, D. A., Vestergaard, M.

“…The Space Telescope and Optical Reverberation Mapping Project (AGN STORM) on NGC 5548 in 2014 is one of the most intensive multiwavelength AGN monitoring…”
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SPACE TELESCOPE AND OPTICAL REVERBERATION MAPPING PROJECT. IV. ANOMALOUS BEHAVIOR OF THE BROAD ULTRAVIOLET EMISSION LINES IN NGC 5548 by Goad, M. R., Korista, K. T., Rosa, G. De, Kriss, G. A., Edelson, R., Barth, A. J., Ferland, G. J., Kochanek, C. S., Netzer, H., Peterson, B. M., Bentz, M. C., Crenshaw, D. M., Denney, K. D., Ely, J., Fausnaugh, M. M., Grier, C. J., Gupta, A., Horne, K. D., Kaastra, J., Pancoast, A., Pei, L., Pogge, R. W., Skielboe, A., Starkey, D., Vestergaard, M., Zu, Y., Anderson, M. D., Arévalo, P., Bazhaw, C., Borman, G. A., Boroson, T. A., Bottorff, M. C., Brandt, W. N., Breeveld, A. A., Brewer, B. J., Cackett, E. M., Carini, M. T., Croxall, K. V., Bontà, E. Dalla, Lorenzo-Cáceres, A. De, Dietrich, M., Efimova, N. V., Evans, P. A., Filippenko, A. V., Flatland, K., Gehrels, N., Geier, S., Gelbord, J. M., Gonzalez, L., Gorjian, V., Grupe, D., Hall, P. B., Hicks, S., Horenstein, D., Hutchison, T., Im, M., Jensen, J. J., Joner, M. D., Jones, J., Kaspi, S., Kelly, B. C., Kennea, J. A., Kim, M., Kim, S. C., Klimanov, S. A., Lee, J. C., Leonard, D. C., Lira, P., MacInnis, F., Manne-Nicholas, E. R., Mathur, S., McHardy, I. M., Montouri, C., Musso, R., Nazarov, S. V., Norris, R. P., Nousek, J. A., Okhmat, D. N., Papadakis, I., Parks, J. R., Pott, J.-U., Rafter, S. E., Rix, H.-W., Saylor, D. A., Schimoia, J. S., Schnülle, K., Sergeev, S. G., Siegel, M., Spencer, M., Sung, H.-I., Teems, K. G., Treu, T., Turner, C. S., Uttley, P., Villforth, C., Weiss, Y., Woo, J.-H., Yan, H., Young, S., Zheng, W.-K.

“…ABSTRACT During an intensive Hubble Space Telescope (HST) Cosmic Origins Spectrograph (COS) UV monitoring campaign of the Seyfert 1 galaxy NGC 5548 performed…”
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Anomalous behaviour of the UV–optical continuum bands in NGC 5548 by Goad, M R, Knigge, C, Korista, K T, Cackett, E, Horne, K, Starkey, D A, Peterson, B M, De Rosa, G, Kriss, G A, Edelson, R, Fausnaugh, M

“…ABSTRACT During the 2014 HST/Swift and ground-based multiwavelength monitoring campaign of NGC 5548 [active galactic nucleus (AGN) STORM], the UV–optical broad…”
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SUPPRESSION OF DIELECTRONIC RECOMBINATION DUE TO FINITE DENSITY EFFECTS by Nikolic, D, Gorczyca, T W, Korista, K T, Ferland, G J, Badnell, N R

“…We have developed a general model for determining density-dependent effective dielectronic recombination (DR) rate coefficients in order to explore…”
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