Search Results - "Lohfink, A. M."

A Hard Look at NGC 5347: Revealing a Nearby Compton-thick AGN by Kammoun, E. S., Miller, J. M., Zoghbi, A., Oh, K., Koss, M., Mushotzky, R. F., Brenneman, L. W., Brandt, W. N., Proga, D., Lohfink, A. M., Kaastra, J. S., Barret, D., Behar, E., Stern, D.

“…Current measurements show that the observed fraction of Compton-thick (CT) active galactic nuclei (AGN) is smaller than the expected values needed to explain…”
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The Compton hump and variable blue wing in the extreme low-flux NuSTAR observations of 1H0707−495 by Kara, E., Fabian, A. C., Lohfink, A. M., Parker, M. L., Walton, D. J., Boggs, S. E., Christensen, F. E., Hailey, C. J., Harrison, F. A., Matt, G., Reynolds, C. S., Stern, D., Zhang, W. W.

“…The narrow-line Seyfert I galaxy, 1H0707−495, has been well observed in the 0.3–10 keV band, revealing a dramatic drop in flux in the iron Kα band, a strong…”
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A dependable distance estimator to black hole low-mass X-ray binaries by Abdulghani, Y, Lohfink, A M, Chauhan, J

“…ABSTRACT Black hole low-mass X-ray binaries (BH-LMXBs) are excellent observational laboratories for studying many open questions in accretion physics. However,…”
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Ultraviolet and X-ray variability of active galactic nuclei with Swift by Buisson, D JK, Lohfink, A M, Alston, W N, Fabian, A C

“…We analyse a sample of 21 active galactic nuclei using data from the Swift satellite to study the variability properties of the population in the X-ray, UV and…”
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Coronal temperatures of the AGN ESO 103−035 and IGR 2124.7+5058 from NuSTAR observations by Buisson, D J K, Fabian, A C, Lohfink, A M

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The remarkable X-ray variability of IRAS 13224–3809 – I. The variability process by Alston, W N, Fabian, A C, Buisson, D J K, Kara, E, Parker, M L, Lohfink, A M, Uttley, P, Wilkins, D R, Pinto, C, De Marco, B, Cackett, E M, Middleton, M J, Walton, D J, Reynolds, C S, Jiang, J, Gallo, L C, Zogbhi, A, Miniutti, G, Dovciak, M, Young, A J

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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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Broad-band spectral analysis of Mrk 926 using multi-epoch X-ray observations by Chalise, S, Lohfink, A M, Chauhan, J, Russell, T D, Buisson, D J K, Mallick, L

“…ABSTRACT The X-ray spectra of some active galactic nuclei (AGNs) show a soft X-ray excess, emission in excess to the extrapolated primary X-ray continuum below…”
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Discovery of soft and hard X-ray time lags in low-mass AGNs by Mallick, L, Wilkins, D R, Alston, W N, Markowitz, A, De Marco, B, Parker, M L, Lohfink, A M, Stalin, C S

“…ABSTRACT The scaling relations between the black hole (BH) mass and soft lag properties for both active galactic nuclei (AGNs) and BH X-ray binaries (BHXRBs)…”
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A Hard Look at Local, Optically Selected, Obscured Seyfert Galaxies by Kammoun, E. S., Miller, J. M., Koss, M., Oh, K., Zoghbi, A., Mushotzky, R. F., Barret, D., Behar, E., Brandt, W. N., Brenneman, L. W., Kaastra, J. S., Lohfink, A. M., Proga, D., Stern, D.

“…Abstract We study the X-ray spectra of a sample of 19 obscured, optically selected Seyfert galaxies (Sy 1.8, 1.9, and 2) in the local universe ( d  ≤ 175 Mpc),…”
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High-density disc reflection spectroscopy of low-mass active galactic nuclei by Mallick, L, Fabian, A C, García, J A, Tomsick, J A, Parker, M L, Dauser, T, Wilkins, D R, De Marco, B, Steiner, J F, Connors, R M T, Mastroserio, G, Markowitz, A G, Pinto, C, Alston, W N, Lohfink, A M, Gandhi, P

“…ABSTRACT The standard alpha-disc model predicts an anticorrelation between the density of the inner accretion disc and the black hole mass times square of the…”
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Is there a UV/X-ray connection in IRAS 13224−3809? by Buisson, D J K, Lohfink, A M, Alston, W N, Cackett, E M, Chiang, C-Y, Dauser, T, De Marco, B, Fabian, A C, Gallo, L C, García, J A, Jiang, J, Kara, E, Middleton, M J, Miniutti, G, Parker, M L, Pinto, C, Uttley, P, Walton, D J, Wilkins, D R

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A Long Look at MCG-5-23-16 with NuSTAR. I. Relativistic Reflection and Coronal Properties by Zoghbi, Abderahmen, Matt, G., Miller, J. M., Lohfink, A. M., Walton, D. J., Ballantyne, D. R., García, J. A., Stern, D., Koss, M. J., Farrah, D., Harrison, F. A., Boggs, S. E., Christensen, F. E., Craig, W., Hailey, C. J., Zhang, W. W.

“…MCG-5-23-16 was targeted in early 2015 with a half mega-second observing campaign using NuSTAR. Here we present the spectral analysis of these data sets along…”
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THE RHYTHM OF FAIRALL 9. I. OBSERVING THE SPECTRAL VARIABILITY WITH XMM-NEWTON AND NuSTAR by Lohfink, A. M., Reynolds, C. S., Pinto, C., Alston, W., Boggs, S. E., Christensen, F. E., Craig, W. W., Fabian, A. C., Hailey, C. J., Harrison, F. A., Kara, E., Matt, G., Parker, M. L., Stern, D., Walton, D., Zhang, W. W.

“…ABSTRACT We present a multi-epoch X-ray spectral analysis of the Seyfert 1 galaxy Fairall 9. Our analysis shows that Fairall 9 displays unique spectral…”
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NuSTAR observations of Mrk 766: distinguishing reflection from absorption by Buisson, D J K, Parker, M L, Kara, E, Vasudevan, R V, Lohfink, A M, Pinto, C, Fabian, A C, Ballantyne, D R, Boggs, S E, Christensen, F E, Craig, W W, Farrah, D, Hailey, C J, Harrison, F A, Ricci, C, Stern, D, Walton, D J, Zhang, W W

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The NuSTAR X-ray spectrum of the low-luminosity active galactic nucleus in NGC 7213 by Ursini, F., Marinucci, A., Matt, G., Bianchi, S., Tortosa, A., Stern, D., Arévalo, P., Ballantyne, D. R., Bauer, F. E., Fabian, A. C., Harrison, F. A., Lohfink, A. M., Reynolds, C. S., Walton, D. J.

“…We present an analysis of the 3–79 keV NuSTAR spectrum of the low-luminosity active galactic nucleus NGC 7213. In agreement with past observations, we find a…”
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The Nature of the Broadband X-Ray Variability in the Dwarf Seyfert Galaxy NGC 4395 by Kammoun, E. S., Nardini, E., Zoghbi, A., Miller, J. M., Cackett, E. M., Gallo, E., Reynolds, M. T., Risaliti, G., Barret, D., Brandt, W. N., Brenneman, L. W., Kaastra, J. S., Koss, M., Lohfink, A. M., Mushotzky, R. F., Raymond, J., Stern, D.

“…We present a flux-resolved X-ray analysis of the dwarf Seyfert 1.8 galaxy NGC 4395, based on three archival XMM-Newton and one archival NuSTAR observations…”
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THE CORONA OF THE BROAD-LINE RADIO GALAXY 3C 390.3 by Lohfink, A. M., Ogle, P., Tombesi, F., Walton, D., Balokovi, M., Zoghbi, A., Ballantyne, D. R., Boggs, S. E., Christensen, F. E., Craig, W. W., Fabian, A. C., Hailey, C. J., Harrison, F. A., King, A. L., Madejski, G., Matt, G., Reynolds, C. S., Stern, D., Ursini, F., Zhang, W. W.

“…ABSTRACT We present the results from a joint Suzaku/NuSTAR broadband spectral analysis of 3C 390.3. The high quality data enables us to clearly separate the…”
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Broadband spectral analysis of Mrk 926 using multi-epoch X-ray observations by Chalise, S, Lohfink, A. M, Chauhan, J, Russell, T. D, Buisson, D. J. K, Mallick, L

“…The X-ray spectra of some active galactic nuclei (AGN) show a soft X-ray excess, emission in excess to the extrapolated primary X-ray continuum below 2 keV…”
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High-density disc reflection spectroscopy of low-mass active galactic nuclei by Mallick, L, Fabian, A. C, García, J. A, Tomsick, J. A, Parker, M. L, Dauser, T, Wilkins, D. R, De Marco, B, Steiner, J. F, Connors, R. M. T, Mastroserio, G, Markowitz, A. G, Pinto, C, Alston, W. N, Lohfink, A. M, Gandhi, P

“…The standard alpha-disc model predicts an anti-correlation between the density of the inner accretion disc and the black hole mass times square of the…”
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