Search Results - "Lobban, A P"

A Suzaku survey of Fe K lines in Seyfert 1 active galactic nuclei by Patrick, A. R., Reeves, J. N., Porquet, D., Markowitz, A. G., Braito, V., Lobban, A. P.

“…ABSTRACT We construct full broad‐band models in an analysis of Suzaku observations of nearby Seyfert 1 active galactic nuclei (AGN) (z ≤ 0.2) with exposures…”
Get full text

Iron line profiles in Suzaku spectra of bare Seyfert galaxies by Patrick, A. R., Reeves, J. N., Porquet, D., Markowitz, A. G., Lobban, A. P., Terashima, Y.

“…We methodically model the broad-band Suzaku spectra of a small sample of six 'bare' Seyfert galaxies: Ark 120, Fairall 9, MCG −02-14-009, Mrk 335, NGC 7469 and…”
Get full text

Assessing black hole spin in deep Suzaku observations of Seyfert 1 AGN by Patrick, A. R., Reeves, J. N., Lobban, A. P., Porquet, D., Markowitz, A. G.

“…We present a broad-band analysis of deep Suzaku observations of nearby Seyfert 1 active galactic nuclei (AGN): Fairall 9, MCG−6-30-15, NGC 3516, 3783 and 4051…”
Get full text

The iron K line profile of IRAS 18325-5926 by Lobban, A. P., Vaughan, S.

“…IRAS 18325−5926 is an X-ray bright, Compton-thin, type 2 Seyfert galaxy and it was the first Seyfert 2 in which the presence of a broad Fe Kα emission line was…”
Get full text

Contemporaneous Chandra HETG and Suzaku X-ray observations of NGC 4051 by Lobban, A. P., Reeves, J. N., Miller, L., Turner, T. J., Braito, V., Kraemer, S. B., Crenshaw, D. M.

“…We present the results of a deep 300 ks Chandra High Energy Transmission Grating (HETG) observation of the highly variable narrow-line Seyfert Type 1 galaxy…”
Get full text

OBSERVATIONS OF OUTFLOWING ULTRAVIOLET ABSORBERS IN NGC 4051 WITH THE COSMIC ORIGINS SPECTROGRAPH by KRAEMER, S. B, CRENSHAW, D. M, DUNN, J. P, TURNER, T. J, LOBBAN, A. P, MILLER, L, REEVES, J. N, FISCHER, T. C, BRAITO, V

“…We present new Hubble Space Telescope (HST)/Cosmic Origins Spectrograph (COS) observations of the narrow-line Seyfert 1 galaxy NGC 4051. These data were…”
Get full text

Contemporaneous Chandra HETG and Suzaku X-ray observations of NGC 4051 by Lobban, A. P., Reeves, J. N., Miller, L., Turner, T. J., Braito, V., Kraemer, S. B., Crenshaw, D. M.

Get full text

Modelling photometric reverberation mapping data for the next generation of big data surveys. Quasar accretion discs sizes with the LSST by Pozo Nuñez, F, Bruckmann, C, Deesamutara, S, Czerny, B, Panda, S, Lobban, A P, Pietrzyński, G, Polsterer, K L

“…ABSTRACT Photometric reverberation mapping can detect the radial extent of the accretion disc (AD) in Active Galactic Nuclei by measuring the time delays…”
Get full text

The flaring X-ray corona in the quasar PDS 456 by Reeves, J N, Braito, V, Porquet, D, Lobban, A P, Matzeu, G A, Nardini, E

“…ABSTRACT New Swift monitoring observations of the variable, radio-quiet quasar, PDS 456, are presented. A bright X-ray flare was captured in 2018 September,…”
Get full text

X-ray variability analysis of a large series of XMM–Newton + NuSTAR observations of NGC 3227 by Lobban, A P, Turner, T J, Reeves, J N, Braito, V, Miller, L

“…ABSTRACT We present a series of X-ray variability results from a long XMM–Newton + NuSTAR campaign on the bright, variable AGN NGC 3227. We present an analysis…”
Get full text

A deep X-ray view of the bare AGN Ark 120. III. X-ray timing analysis and multiwavelength variability by Lobban, A P, Porquet, D, Reeves, J N, Markowitz, A, Nardini, E, Grosso, N

“…Abstract We present the spectral/timing properties of the bare Seyfert galaxy Ark 120 through a deep ∼420 ks XMM–Newton campaign plus recent NuSTAR…”
Get full text

X-ray timing analysis of the quasar PG 1211+143 by Lobban, A. P., Vaughan, S., Pounds, K., Reeves, J. N.

“…We report on a timing analysis of a new ∼630 ks XMM–Newton observation of the quasar, PG 1211+143. We find a well-defined X-ray power spectrum with a…”
Get full text

X-ray time lags in PG 1211+143 by Lobban, A P, Vaughan, S, Pounds, K, Reeves, J N

Get full text

TESTING RELATIVISTIC REFLECTION AND RESOLVING OUTFLOWS IN PG 1211+143 WITH XMM-NEWTON AND NuSTAR by Lobban, A. P., Pounds, K., Vaughan, S., Reeves, J. N.

“…ABSTRACT We analyze the broad-band X-ray spectrum (0.3-50 keV) of the luminous Seyfert 1/quasar PG 1211+143-the archetypal source for high-velocity X-ray…”
Get full text

The first broad-band X-ray view of the narrow-line Seyfert 1 Ton S180 by Matzeu, G A, Nardini, E, Parker, M L, Reeves, J N, Braito, V, Porquet, D, Middei, R, Kammoun, E, Lusso, E, Alston, W N, Giustini, M, Lobban, A P, Joyce, A M, Igo, Z, Ebrero, J, Ballo, L, Santos-Lleó, M, Schartel, N

“…ABSTRACT We present joint XMM–Newton and NuSTAR observations of the ‘bare’ narrow-line Seyfert 1 Ton S180 (z = 0.062), carried out in 2016 and providing the…”
Get full text

X-ray, UV, and optical time delays in the bright Seyfert galaxy Ark 120 with co-ordinated Swift and ground-based observations by Lobban, A P, Zola, S, Pajdosz-Śmierciak, U, Braito, V, Nardini, E, Bhatta, G, Markowitz, A, Bachev, R, Carosati, D, Caton, D B, Damljanovic, G, Dębski, B, Haislip, J B, Hu, S M, Kouprianov, V, Krzesiński, J, Porquet, D, Pozo Nuñez, F, Reeves, J, Reichart, D E

“…ABSTRACT We report on the results of a multiwavelength monitoring campaign of the bright, nearby Seyfert galaxy Ark 120, using a ∼50-d observing programme with…”
Get full text

Resolving the X-Ray Obscuration in a Low-flux Observation of the Quasar PDS 456 by Reeves, J. N., Braito, V., Nardini, E., Hamann, F., Chartas, G., Lobban, A. P., O'Brien, P. T., Turner, T. J.

“…Simultaneous XMM-Newton, NuSTAR, and HST observations, performed in 2017 March, of the nearby (z = 0.184) luminous quasar PDS 456 are presented. PDS 456 had a…”
Get full text

Modelling X-ray RMS spectra II: the ultrafast outflow of PDS 456 by Härer, L, Parker, M L, Joyce, A, Igo, Z, Alston, W N, Fürst, F, Lobban, A P, Matzeu, G A, Reeves, J N

“…ABSTRACT We present an improved model for excess variance spectra describing ultrafast outflows and successfully apply it to the luminous ($L_{\rm bol}\sim…”
Get full text

X-ray time delays from the Seyfert 2 galaxy IRAS 18325−5926 by Lobban, A. P., Alston, W. N., Vaughan, S.

“…Using new XMM–Newton observations we detect hard X-ray time lags in the rapid variability of the Compton-thin Seyfert 2 galaxy IRAS 18325−5926. The…”
Get full text

Evidence for a truncated accretion disc in the low-luminosity Seyfert galaxy, NGC 7213? by Lobban, A. P., Reeves, J. N., Porquet, D., Braito, V., Markowitz, A., Miller, L., Turner, T. J.

“…We present the broad-band 0.6–150 keV Suzaku and Swift BAT spectra of the low-luminosity Seyfert galaxy, NGC 7213. The time-averaged continuum emission is well…”
Get full text