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  • AGILE detection of extreme ?-ray activity from the blazar PKS 1510-089 during March 2009. Multifrequency analysis 
    D'Ammando, F.; Raiteri, C. M.; Villata, M.; Romano, P.; Pucella, G.; Krimm, H. A.; Covino, S.; Orienti, M.; Giovannini, G.; Vercellone, S.; Pian, E.; Donnarumma, I.; Vittorini, V.; Tavani, M.; Argan, A.; Barbiellini, G.; Boffelli, F.; Bulgarelli, A.; Caraveo, P.; Cattaneo, P. W.; Chen, A. W.; Cocco, V.; Costa, E.; Del Monte, E.; de Paris, G.; Di Cocco, G.; Evangelista, Y.; Feroci, M.; Ferrari, A.; Fiorini, M.; Froysland, T.; Frutti, M.; Fuschino, F.; Galli, M.; Gianotti, F.; Giuliani, A.; Labanti, C.; Lapshov, I.; Lazzarotto, F.; Lipari, P.; Longo, F.; Marisaldi, M.; Mereghetti, S.; Morselli, A.; Pacciani, L.; Pellizzoni, A.; Perotti, F.; Piano, G.; Picozza, P.; Pilia, M.; Porrovecchio, G.; Prest, M.; Rapisarda, M.; Rappoldi, A.; Rubini, A.; Sabatini, S.; Soffitta, P.; Striani, E.; Trifoglio, M.; Trois, A.; Vallazza, E.; Zambra, A.; Zanello, D.; Agudo, I.; Aller, H. D.; Aller, M. F.; Arkharov, A. A.; Bach, U.; Benitez, E.; Berdyugin, A.; Blinov, D. A.; Buemi, C. S.; Chen, W. P.; di Paola, A.; Dolci, M.; Forné, E.; Fuhrmann, L.; Gómez, J. L.; Gurwell, M. A.; Jordan, B.; Jorstad, S. G.; Heidt, J.; Hiriart, D.; Hovatta, T.; Hsiao, H. Y.; Kimeridze, G.; Konstantinova, T. S.; Kopatskaya, E. N.; Koptelova, E.; Kurtanidze, O. M.; Kurtanidze, S. O.; Larionov, V. M.; Lähteenmäki, A.; Leto, P.; Lindfors, E.; Marscher, A. P.; McBreen, B.; McHardy, I. M.; Morozova, D. A.; Nilsson, K.; Pasanen, M.; Roca-Sogorb, M.; Sillanpää, A.; Takalo, L. O.; Tornikoski, M.; Trigilio, C.; Troitsky, I. S.; Umana, G.; Antonelli, L. A.; Colafrancesco, S.; Pittori, C.; Santolamazza, P.; Verrecchia, F.; Giommi, P.; Salotti, L. (2011)
    We report on the extreme ?-ray activity from the flat spectrum radio quasar (FSRQ) PKS 1510-089 observed by the AGILE satellite in March 2009. In the same period a radio-to-optical monitoring of the source was provided by ...
  • Aging and Disability in the 21st Century: How Technology Can Help Maintain Health and Quality of Life 
    McCarty, Cara L. (2019)
  • Aging Effects on Osteon Remodeling 
    Ortner, Donald J. (1975)
  • Aging Rhizophora seedlings from leaf scar nodes: A technique for studying recruitment and growth in mangrove forests 
    Duke, Norman C.; Pinzon M., Zuleika S. (1992)
    This paper proposes a rapid and non-destructive technique to age Rhizophora seedlings, in the field, using the sequence of leaf nodes along main stems. Based on three- to four-year-old R. mangle seedlings planted in a bay ...
  • AGN Activity and the Misaligned Hot ISM in the Compact Radio Elliptical NGC 4278 
    Pellegrini, Silvia; Wang, Junfeng; Fabbiano, Giuseppina; Kim, Dong-Woo; Brassington, Nicola J.; Gallagher, John S.; Trinchieri, Ginevra; Zezas, Andreas (2012)
    The analysis of a deep (579 ks) Chandra ACIS pointing of the elliptical galaxy NGC 4278, which hosts a low-luminosity active galactic nucleus (AGN) and compact radio emission, allowed us to detect extended emission from ...
  • AGN and star formation at cosmic noon: comparison of data to theoretical models 
    Florez, Jonathan; Jogee, Shardha; Guo, Yuchen; Cora, Sofía A.; Weinberger, Rainer; Davé, Romeel; Hernquist, Lars; Vogelsberger, Mark; Ciardullo, Robin; Finkelstein, Steven L.; Gronwall, Caryl; Kawinwanichakij, Lalitwadee; Leung, Gene C. K.; LaMassa, Stephanie; Papovich, Casey; Stevans, Matthew L.; Wold, Isak (2021)
    In theoretical models of galaxy evolution, active galactic nucleus (AGN) and star formation (SF) activity are closely linked and AGN feedback is routinely invoked to regulate galaxy growth. In order to constrain such models, ...
  • The AGN contribution to the UV-FIR luminosities of interacting galaxies and its role in identifying the main sequence 
    Ramos Padilla, Andrés F.; Ashby, M. L. N.; Smith, Howard A.; Martínez-Galarza, Juan R.; Beverage, Aliza G.; Dietrich, Jeremy; Higuera-G., Mario-A; Weiner, Aaron S. (2020)
    Emission from active galactic nuclei (AGNs) is known to play an important role in the evolution of many galaxies including luminous and ultraluminous systems (U/LIRGs), as well as merging systems. However, the extent, ...
  • AGN duty cycle estimates for the ultra-steep spectrum radio relic VLSS J1431.8+1331 
    Shulevski, A.; Morganti, R.; Barthel, P. D.; Harwood, J. J.; Brunetti, G.; van Weeren, R. J.; Röttgering, H. J. A.; White, G. J.; Horellou, C.; Kunert-Bajraszewska, M.; Jamrozy, M.; Chyzy, K. T.; Mahony, E.; Miley, G.; Brienza, M.; Bîrzan, L.; Rafferty, D. A.; Brüggen, M.; Wise, M. W.; Conway, J.; de Gasperin, F.; Vilchez, N. (2015)
    Context. Steep spectrum radio sources associated with active galactic nuclei (AGN) may contain remnants of past AGN activity episodes. Studying these sources gives us insight into the AGN activity history. Novel instruments ...
  • AGN feedback duty cycle in Planck SZ selected clusters using Chandra observations 
    Olivares, V.; Su, Y.; Nulsen, P.; Kraft, R.; Somboonpanyakul, T.; Andrade-Santos, F.; Jones, C.; Forman, W. (2022)
    We present a systematic study of X-ray cavities using archival Chandra observations of nearby galaxy clusters selected by their Sunyaev-Zel'dovich (SZ) signature in the Planck survey, which provides a nearly unbiased ...
  • AGN feedback in clusters: Shock and sound heating 
    Nulsen, P. E. J.; McNamara, B. R. (2013)
    Observations support the view that feedback, in the form of radio outbursts from active nuclei in central galaxies, prevents catastrophic cooling of gas and rapid star formation in many groups and clusters of galaxies. ...
  • AGN feedback in galaxy group 3C 88: cavities, shock, and jet reorientation 
    Liu, Wenhao; Sun, Ming; Nulsen, Paul; Clarke, Tracy; Sarazin, Craig; Forman, William; Gaspari, Massimo; Giacintucci, Simona; Lal, Dharam Vir; Edge, Tim (2019)
    We present results from the deep Chandra observation (105 ks), together with new Giant Metrewave Radio Telescope and Very Large Array data of the AGN outburst in the radio-loud galaxy group 3C 88. The system shows a prominent ...
  • AGN feedback in the FR II galaxy 3C 220.1 
    Liu, Wenhao; Sun, Ming; Nulsen, Paul E. J.; Worrall, Diana M.; Birkinshaw, Mark; Sarazin, Craig; Forman, William R.; Jones, Christine; Ge, Chong (2020)
    We present results from a deep (174 ks) Chandra observation of the FR-II radio galaxy 3C 220.1, the central brightest cluster galaxy (BCG) of a kT ~ 4 keV cluster at z = 0.61. The temperature of the hot cluster medium drops ...
  • AGN feeding and feedback in M84: from kiloparsec scales to the Bondi radius 
    Bambic, C. J.; Russell, H. R.; Reynolds, C. S.; Fabian, A. C.; McNamara, B. R.; Nulsen, P. E. J. (2023)
    We present the deepest Chandra observation to date of the galaxy M84 in the Virgo Cluster, with over 840 ks of data provided by legacy observations and a recent 730 ks campaign. The increased signal-to-noise ratio allows ...
  • The AGN Fraction in Dwarf Galaxies from eROSITA: First Results and Future Prospects 
    Latimer, Colin J.; Reines, Amy E.; Bogdan, Akos; Kraft, Ralph (2021)
    Determining the fraction of nearby dwarf galaxies hosting massive black holes (BHs) can inform our understanding of the origin of "seed" BHs at high redshift. Here we search for signatures of accreting massive ...
  • The AGN luminosity fraction in merging galaxies 
    Dietrich, Jeremy; Weiner, Aaron S.; Ashby, Matthew L. N.; Hayward, Christopher C.; Martínez-Galarza, Juan Rafael; Ramos Padilla, Andrés F.; Rosenthal, Lee; Smith, Howard A.; Willner, S. P.; Zezas, Andreas (2018)
    Galaxy mergers are key events in galaxy evolution, often causing massive starbursts and fueling active galactic nuclei (AGNs). In these highly dynamic systems, it is not yet precisely known how much starbursts and AGNs, ...
  • AGN photoionization of gas in companion galaxies as a probe of AGN radiation in time and direction 
    Keel, William C.; Bennert, Vardha N.; Pancoast, Anna; Harris, Chelsea E.; Nierenberg, Anna; Chojnowski, S. Drew; Moiseev, Alexei V.; Oparin, Dmitry V.; Lintott, Chris J.; Schawinski, Kevin; Mitchell, Graham; Cornen, Claude (2019)
    We consider AGN photoionization of gas in companion galaxies (cross- ionization) as a way to sample the intensity of AGN radiation in both direction and time, independent of the gas properties of the AGN host galaxies. ...
  • AGN Populations in Large-volume X-Ray Surveys: Photometric Redshifts and Population Types Found in the Stripe 82X Survey 
    Ananna, Tonima Tasnin; 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 (2017)
    Multiwavelength surveys covering large sky volumes are necessary to obtain an accurate census of rare objects such as high-luminosity and/or high-redshift active galactic nuclei (AGNs). Stripe 82X is a 31.3 X-ray survey ...
  • AGN-host connection at 0.5 < z < 2.5: A rapid evolution of AGN fraction in red galaxies during the last 10 Gyr 
    Wang, Tao; Elbaz, D.; Alexander, D. M.; Xue, Y. Q.; Gabor, J. M.; Juneau, S.; Schreiber, C.; Zheng, X. -Z; Wuyts, S.; Shi, Y.; Daddi, E.; Shu, X. -W; Fang, G. -W; Huang, J. -S; Luo, B.; Gu, Q. -S (2017)
    We explore the dependence of the incidence of moderate-luminosity (L<SUB>0.5-8 keV</SUB> = 10<SUP>41.9-43.7</SUP> erg s<SUP>-1</SUP>) active galactic nuclei (AGNs) and the distribution of their accretion rates on host color ...
  • AGN-Host Interaction in IC 5063. I. Large-scale X-Ray Morphology and Spectral Analysis 
    Travascio, A.; Fabbiano, Giuseppina; Paggi, A.; Elvis, Martin; Maksym, W. Peter; Morganti, R.; Oosterloo, T.; Fiore, F. (2021)
    We report the analysis of the deep (~270 ks) X-ray Chandra data of one of the most radio-loud, Seyfert 2 galaxies in the nearby universe (z = 0.01135), IC 5063. The alignment of the radio structure with the galactic disk ...
  • AGN/starburst connection in action: the half million second RGS spectrum of NGC 1365 
    Guainazzi, M.; Risaliti, Guido; Nucita, A.; Wang, J.; Bianchi, S.; Soria, R.; Zezas, Andreas (2009)

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