Search Results - "Nandra, Kirpal"

eROSITA’s X-ray eyes on the Universe by Merloni, Andrea, Nandra, Kirpal, Predehl, Peter

“…eROSITA, a new X-ray telescope currently performing an all-sky survey of unprecedented depth, aims to provide insights into dark energy, dark matter, black…”
Get full text

X-ray spectral properties of the AGN sample in the northern XMM-XXL field by Liu, Zhu, Merloni, Andrea, Georgakakis, Antonis, Menzel, Marie-Luise, Buchner, Johannes, Nandra, Kirpal, Salvato, Mara, Shen, Yue, Brusa, Marcella, Streblyanska, Alina

“…In this paper we describe and publicly release a catalogue consisting of 8445 point-like X-ray sources detected in the XMM-XXL north survey. For the 2512 AGN…”
Get full text

The Spatial Clustering of ROSAT All-Sky Survey Active Galactic Nuclei. V. The Evolution of Broad-line AGN Clustering Properties in the Last 6 Gyr by Krumpe, Mirko, Miyaji, Takamitsu, Georgakakis, Antonis, Schulze, Andreas, Coil, Alison L., Dwelly, Tom, Coffey, Damien, Comparat, Johan, Aceves, Héctor, Salvato, Mara, Merloni, Andrea, Maraston, Claudia, Nandra, Kirpal, Brownstein, Joel R., Schneider, Donald P.

“…Abstract This is the fifth paper in a series of investigations of the clustering properties of luminous, broad-emission-line active galactic nuclei (AGNs)…”
Get full text

AGN Populations in Large-volume X-Ray Surveys: Photometric Redshifts and Population Types Found in the Stripe 82X Survey by Ananna, Tonima Tasnim, Salvato, Mara, LaMassa, Stephanie, Urry, C. Megan, Cappelluti, Nico, Cardamone, Carolin, Civano, Francesca, Farrah, Duncan, Gilfanov, Marat, Glikman, Eilat, Hamilton, Mark, Kirkpatrick, Allison, Lanzuisi, Giorgio, Marchesi, Stefano, Merloni, Andrea, Nandra, Kirpal, Natarajan, Priyamvada, Richards, Gordon T., Timlin, John

“…Multiwavelength surveys covering large sky volumes are necessary to obtain an accurate census of rare objects such as high-luminosity and/or high-redshift…”
Get full text

The Athena space X‐ray observatory and the astrophysics of hot plasma by Barret, Didier, Decourchelle, Anne, Fabian, Andy, Guainazzi, Matteo, Nandra, Kirpal, Smith, Randall, den Herder, Jan‐Willem

“…The properties (temperature, density, chemical composition, velocity) of hot astrophysical plasma and the physical processes affecting them (heating/cooling,…”
Get full text

On the nature of unabsorbed Seyfert 2 galaxies by Brightman, Murray, Nandra, Kirpal

“…We present an analysis of six 12 μm selected Seyfert 2 galaxies that have been reported to be unabsorbed in the X-ray. By comparing the luminosities of these…”
Get full text

Morphological Evidence for the eROSITA Bubbles Being Giant and Distant Structures by Liu, Teng, Merloni, Andrea, Sanders, Jeremy, Ponti, Gabriele, Strong, Andrew, Yeung, Michael C. H., Locatelli, Nicola, Predehl, Peter, Zheng, Xueying, Sasaki, Manami, Freyberg, Michael, Dennerl, Konrad, Becker, Werner, Nandra, Kirpal, Mayer, Martin, Buchner, Johannes

“…Abstract There are two contradictory views of the eROSITA bubbles: either a 10 4 pc scale pair of giant bubbles blown by the Galactic center (GC), or a 10 2 pc…”
Get full text

On the X-ray properties of sub-mm-selected galaxies by Laird, Elise S., Nandra, Kirpal, Pope, Alexandra, Scott, Douglas

“…We present an analysis of the X-ray properties of 35 sub-mm galaxies (SMGs) in the Chandra Deep Field-North region. Using a sample of robust 850 μm-selected…”
Get full text

Finding rare AGN: XMM–Newton and Chandra observations of SDSS Stripe 82 by LaMassa, Stephanie M., Urry, C. Megan, Cappelluti, Nico, Civano, Francesca, Ranalli, Piero, Glikman, Eilat, Treister, Ezequiel, Richards, Gordon, Ballantyne, David, Stern, Daniel, Comastri, Andrea, Cardamone, Carie, Schawinski, Kevin, Böhringer, Hans, Chon, Gayoung, Murray, Stephen S., Green, Paul, Nandra, Kirpal

“…We have analysed the XMM-Newton and Chandra data overlapping ~16.5 deg... of Sloan Digital Sky Survey Stripe 82, including ~4.6 deg2 of proprietary XMM-Newton…”
Get full text

Full-sky photon simulation of clusters and active galactic nuclei in the soft X-rays for eROSITA by Comparat, Johan, Eckert, Dominique, Finoguenov, Alexis, Schmidt, Robert, Sanders, Jeremy S., Nagai, Daisuke, Lau, Erwin T., K fer, Florian, Pacaud, Florian, Clerc, Nicolas, Reiprich, Thomas H., Bulbul, Esra, Chitham, Jacob Ider, Chiang, Chia-Hsun, Ghirardini, Vittorio, Gonzalez-Perez, Violeta, Gozaliasl, Ghassem, Fitzpatrick, Charles C., Klypin, Anatoly, Merloni, Andrea, Nandra, Kirpal, Liu, Teng, Prada, Francisco, Ramos-Ceja, Miriam, Salvato, Marra, Seppi, Riccardo, Tempel, Elmo, Yepes, Gustavo

“…The eROSITA X-ray telescope on board the Spectrum-Roentgen-Gamma (SRG) mission will measure the position and properties of about 100,000 clusters of galaxies…”
Get full text

AEGIS: New Evidence Linking Active Galactic Nuclei to the Quenching of Star Formation by Bundy, Kevin, Georgakakis, Antonis, Nandra, Kirpal, Ellis, Richard S, Conselice, Christopher J, Laird, Elise, Coil, Alison, Cooper, Michael C, Faber, Sandra M, Newman, Jeff A, Pierce, Christy M, Primack, Joel R, Yan, Renbin

“…Using Chandra X-ray observations in the All-Wavelength Extended Groth Strip International Survey (AEGIS) we identify 241 X-ray-selected active galactic nuclei…”
Get full text

The High Energy X-Ray Probe (Hex-P): Instrument and Mission Profile by Madsen, Kristin K, García, Javier A., Stern, Daniel K, Amini, Rashied, Basso, Stefano, Coutinho, Diogo, Grefenstette, Brian W., Kenyon, Steven, Moretti, Alberto, Morrissey, Patrick, Nandra, Kirpal, Pareschi, Giovanni, Predehl, Peter, Rau, Arne, Spiga, Daniele, Wilms, Jörn, Zhang, William W.

“…The High Energy X-ray Probe (HEX-P) is a proposed NASA probe-class mission that combines the power of high angular resolution with abroad X-ray bandpass to…”
Get full text

Suzaku confirms NGC 3660 is an unabsorbed Seyfert 2 by Rivers, Elizabeth, Brightman, Murray, Bianchi, Stefano, Matt, Giorgio, Nandra, Kirpal, Ueda, Yoshihiro

“…An enigmatic group of objects, unabsorbed Seyfert 2s may have intrinsically weak broad line regions, obscuration in the line of sight to the BLR but not to the…”
Get full text

An XMM-Newton spectral survey of 12 μm selected galaxies - I. X-ray data by Brightman, Murray, Nandra, Kirpal

“…We present an X-ray spectral analysis of 126 galaxies of the 12 μm galaxy sample. By studying this sample at X-ray wavelengths, we aim to determine the…”
Get full text

AGN dust tori: the X-ray-infrared connection by Rowan-Robinson, Michael, Valtchanov, Ivan, Nandra, Kirpal

“…We have combined the well-studied CLASXS Chandra survey in Lockman with the Spitzer SWIRE survey data to study the X-ray-infrared connection for active…”
Get full text

A Cutoff in the X-Ray Fluctuation Power Density Spectrum of the Seyfert 1 Galaxy NGC 3516 by Edelson, Rick, Nandra, Kirpal

Get full text

The relationship between X-ray variability amplitude and black hole mass in active galactic nuclei by O'Neill, Paul M., Nandra, Kirpal, Papadakis, Iossif E., Turner, T. J.

“…We have investigated the relationship between the X-ray variability amplitude and black hole mass for a sample of 46 radio-quiet active galactic nuclei…”
Get full text

The Ionized Gas and Nuclear Environment in NGC 3783. V. Variability and Modeling of the Intrinsic Ultraviolet Absorption by Gabel, Jack R, Kraemer, Steven B, Crenshaw, D. Michael, George, Ian M, Brandt, W. N, Hamann, Frederick W, Kaiser, Mary Elizabeth, Kaspi, Shai, Kriss, Gerard A, Mathur, Smita, Nandra, Kirpal, Netzer, Hagai, Peterson, Bradley M, Shields, Joseph C, Turner, T. J, Zheng, Wei

“…We present results on the location, physical conditions, and geometry of the outflow in the Seyfert 1 galaxy NGC 3783 from a study of the variable intrinsic UV…”
Get full text

On the relativistic iron line and soft excess in the Seyfert 1 galaxy Markarian 335 by O'Neill, Paul M., Nandra, Kirpal, Cappi, Massimo, Longinotti, Anna Lia, Sim, Stuart A.

“…We report a 133-ks XMM–Newton observation of the Seyfert 1 galaxy Markarian 335. The 0.4–12 keV spectrum contains an underlying power-law continuum, a soft…”
Get full text

An XMM-Newton spectral survey of 12 μm selected galaxies - II. Implications for AGN selection and unification by Brightman, Murray, Nandra, Kirpal

“…We present a multi-waveband analysis of a 126-galaxy sub-sample of the 12 μm galaxy sample (12MGS), for which we have carried out a detailed X-ray spectral…”
Get full text