Search Results - "Arevalo, P."

Swift monitoring of NGC 5548: X-ray reprocessing and short-term UV/optical variability by McHardy, I. M., Cameron, D. T., Dwelly, T., Connolly, S., Lira, P., Emmanoulopoulos, D., Gelbord, J., Breedt, E., Arevalo, P., Uttley, P.

“…Lags measured from correlated X-ray/UV/optical monitoring of AGN allow us to determine whether UV/optical variability is driven by reprocessing of X-rays or…”
Get full text

Growing supermassive black holes in the late stages of galaxy mergers are heavily obscured by Ricci, C., Bauer, F. E., Treister, E., Schawinski, K., Privon, G. C., Blecha, L., Arevalo, P., Armus, L., Harrison, F., Ho, L. C., Iwasawa, K., Sanders, D. B., Stern, D.

“…Abstract Mergers of galaxies are thought to cause significant gas inflows to the inner parsecs, which can activate rapid accretion on to supermassive black…”
Get full text

SPACE TELESCOPE AND OPTICAL REVERBERATION MAPPING PROJECT. II. SWIFT AND HST REVERBERATION MAPPING OF THE ACCRETION DISK OF NGC 5548 by Edelson, R., Gelbord, J. M., Horne, K., McHardy, I. M., Peterson, B. M., Arévalo, P., Breeveld, A. A., Rosa, G. De, Evans, P. A., Goad, M. R., Kriss, G. A., Brandt, W. N., Gehrels, N., Grupe, D., Kennea, J. A., Kochanek, C. S., Nousek, J. A., Papadakis, I., Siegel, M., Starkey, D., Uttley, P., Vaughan, S., Young, S., Barth, A. J., Bentz, M. C., Brewer, B. J., Crenshaw, D. M., Dalla Bontà, E., Cáceres, A. De Lorenzo, Denney, K. D., Dietrich, M., Ely, J., Fausnaugh, M. M., Grier, C. J., Hall, P. B., Kaastra, J., Kelly, B. C., Korista, K. T., Lira, P., Mathur, S., Netzer, H., Pancoast, A., Pei, L., Pogge, R. W., Schimoia, J. S., Treu, T., Vestergaard, M., Villforth, C., Yan, H., Zu, Y.

“…ABSTRACT Recent intensive Swift monitoring of the Seyfert 1 galaxy NGC 5548 yielded 282 usable epochs over 125 days across six UV/optical bands and the X-rays…”
Get full text

Optical and near-IR long-term monitoring of NGC 3783 and MR 2251−178: evidence for variable near-IR emission from thin accretion discs by Lira, P., Arévalo, P., Uttley, P., McHardy, I., Breedt, E.

“…We present the long-term near-IR light curves for two nearby active galactic nuclei (AGN), NGC 3783 and MR 2251−178. The near-IR data are complemented by…”
Get full text

Correlated X-ray/optical variability in the quasar MR 2251−178 by Arévalo, P., Uttley, P., Kaspi, S., Breedt, E., Lira, P., McHardy, I. M.

“…Emission from active galactic nuclei is known to vary strongly over time over a wide energy band, but the origin of the variability and especially of the…”
Get full text

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…”
Get full text

Discovery of multiple Lorentzian components in the X-ray timing properties of the Narrow Line Seyfert 1 Ark 564 by McHardy, I. M., Arévalo, P., Uttley, P., Papadakis, I. E., Summons, D. P., Brinkmann, W., Page, M. J.

“…We present a power spectral analysis of a 100-ks XMM–Newton observation of the Narrow Line Seyfert 1 galaxy Ark 564. When combined with earlier RXTE and ASCA…”
Get full text

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

Get full text

IC 751: A NEW CHANGING LOOK AGN DISCOVERED BY NUSTAR by Ricci, C., Bauer, F. E., Arevalo, P., Boggs, S., Brandt, W. N., Christensen, F. E., Craig, W. W., Gandhi, P., Hailey, C. J., Harrison, F. A., Koss, M., Markwardt, C. B., Stern, D., Treister, E., Zhang, W. W.

“…ABSTRACT We present results of five Nuclear Spectroscopic Telescope Array (NuSTAR) observations of the type 2 active galactic nucleus (AGN) in IC 751, three of…”
Get full text

X-ray and radio variability in the low-luminosity active galactic nucleus NGC 7213 by Bell, M. E., Tzioumis, T., Uttley, P., Fender, R. P., Arévalo, P., Breedt, E., McHardy, I., Calvelo, D. E., Jamil, O., Körding, E.

“…We present the results of a ∼3 yr campaign to monitor the low-luminosity active galactic nucleus (LLAGN) NGC 7213 in the radio (4.8 and 8.4 GHz) and X-ray…”
Get full text

Arithmetic with X-ray images of galaxy clusters: effective equation of state for small-scale perturbations in the ICM by Churazov, E., Arevalo, P., Forman, W., Jones, C., Schekochihin, A., Vikhlinin, A., Zhuravleva, I.

“…We discuss a novel technique of manipulating X-ray images of galaxy clusters to reveal the nature of small-scale density/temperature perturbations in the…”
Get full text

NuSTAR UNVEILS A HEAVILY OBSCURED LOW-LUMINOSITY ACTIVE GALACTIC NUCLEUS IN THE LUMINOUS INFRARED GALAXY NGC 6286 by Ricci, C., Bauer, F. E., Treister, E., Romero-Cañizales, C., Arevalo, P., Iwasawa, K., Privon, G. C., Sanders, D. B., Schawinski, K., Stern, D., Imanishi, M.

“…ABSTRACT We report the detection of a heavily obscured active galactic nucleus (AGN) in the luminous infrared galaxy (LIRG) NGC 6286 identified in a 17.5 ks…”
Get full text

X-ray variability of the Seyfert 1 Markarian 335: power spectrum and time lags by Arévalo, P., McHardy, I. M., Summons, D. P.

“…To investigate further the comparison between active galactic nuclei (AGN) and black hole X-ray binaries, we have studied the main X-ray variability properties…”
Get full text

THE BROADBAND SPECTRAL VARIABILITY OF MCG–6-30-15 OBSERVED BY NUSTAR AND XMM-NEWTON by Marinucci, A, Matt, G, Miniutti, G, GUAINAZZI, M, Parker, M L, Brenneman, L, Fabian, A C, Kara, E, Arevalo, P, Ballantyne, D R

“…MCG-6-30-15, at a distance of 37 Mpc (z = 0.008), is the archetypical Seyfert 1 galaxy showing very broad Fe K[alpha] emission. We present results from a joint…”
Get full text

NuSTAR AND XMM-NEWTON OBSERVATIONS OF THE HARD X-RAY SPECTRUM OF CENTAURUS A by Fürst, F., Müller, C., Madsen, K. K., Lanz, L., Rivers, E., Brightman, M., Arevalo, P., Balokovi, M., Beuchert, T., Boggs, S. E., Christensen, F. E., Craig, W. W., Dauser, T., Farrah, D., Graefe, C., Hailey, C. J., Harrison, F. A., Kadler, M., King, A., Krauß, F., Madejski, G., Matt, G., Marinucci, A., Markowitz, A., Ogle, P., Ojha, R., Rothschild, R., Stern, D., Walton, D. J., Wilms, J., Zhang, W.

“…ABSTRACT We present simultaneous XMM-Newton and Nuclear Spectroscopic Telescope Array (NuSTAR) observations spanning 3-78 keV of the nearest radio galaxy,…”
Get full text

Simultaneous NuSTAR and XMM-Newton 0.5-80 keV spectroscopy of the narrow-line Seyfert 1 galaxy SWIFT J2127.4+5654 by Marinucci, A, Matt, G, Kara, E, Miniutti, G, Elvis, M, Arevalo, P, Ballantyne, D R, Balokovic, M, Bauer, F, Brenneman, L, Boggs, S E, Cappi, M, Christensen, F E, Craig, W W, Fabian, A C, Fuerst, F, Hailey, C J, Harrison, F A, Risaliti, G, Reynolds, C S, Stern, D K, Walton, D J, Zhang, W

“…We present a broad-band spectral analysis of the joint XMM-Newton and Nuclear Spectroscopic Telescope Array observational campaign of the narrow-line Seyfert 1…”
Get full text

NuSTAR AND XMM-NEWTON OBSERVATIONS OF NGC 1365: EXTREME ABSORPTION VARIABILITY AND A CONSTANT INNER ACCRETION DISK by Walton, D J, Risaliti, G, Harrison, F A, Fabian, A C, Miller, J M, Arevalo, P, Ballantyne, D R, Boggs, S E, Brenneman, L W, Christensen, F E

“…We present a spectral analysis of four coordinated NuSTAR+XMM-Newton observations of the Seyfert galaxy NGC 1365. These exhibit an extreme level of spectral…”
Get full text

Agrobacterium rhizogenes-mediated transformation of grain (Amaranthus hypochondriacus) and leafy (A. hybridus) amaranths by Castellanos-Arévalo, Andrea P., Estrada-Luna, Andrés A., Cabrera-Ponce, José L., Valencia-Lozano, Eliana, Herrera-Ubaldo, Humberto, de Folter, Stefan, Blanco-Labra, Alejandro, Délano-Frier, John P.

“…Key message Transgenic A. hypochondriacus and A. hybridus roots were generated. Further, a distinct plant regeneration program via somatic embryos produced…”
Get full text

An XMM-Newton view of the 'bare' nucleus of Fairall 9 by Emmanoulopoulos, D., Papadakis, I. E., McHardy, I. M., Nicastro, F., Bianchi, S., Arévalo, P.

“…We present the spectral results from a 130-ks observation, obtained from the X-ray Multi-Mirror Mission-Newton (XMM-Newton) observatory, of the type I Seyfert…”
Get full text

The Nature of the Torus in the Heavily Obscured AGN Markarian 3: an X-Ray Study by Guainazzi, M., Risaliti, G., Awaki, H., Arevalo, P., Bauer, F. E., Bianchi, S., Boggs, S.E, Brandt, W. N., Brightman, M., Christensen, F. E., Craig, W. W., Forster, K., Hailey, C. J., Harrison, F., Koss, M., Longinotti, A., Markwardt, C. B., Marinucci, A., Matt, G., Reynolds, C. S., Ricci, C., Stern, D., Svoboda, J., Walton, D., Zhang, W.

“…In this paper, we report the results of an X-ray monitoring campaign on the heavily obscured Seyfert galaxy, Markarian 3, carried out between the fall of 2014…”
Get full text