Zobrazeno 1 - 10
of 7 406
pro vyhledávání: '"Vestergaard, P."'
Autor:
Bontà, E. Dalla, Peterson, B. M., Grier, C. J., Berton, M., Brandt, W. N., Ciroi, S., Corsini, E. M., Barba, B. Dalla, Davies, R., Dehghanian, M., Edelson, R., Foschini, L., Gasparri, D., Ho, L. C., Horne, K., Iodice, E., Morelli, L., Pizzella, A., Portaluri, E., Shen, Y., Schneider, D. P., Vestergaard, M.
The goal of this project is to construct an estimator for the masses of supermassive black holes in active galactic nuclei (AGNs) based on the broad Halpha emission line. We make use of published reverberation mapping data. We remeasure all Halpha ti
Externí odkaz:
http://arxiv.org/abs/2410.21387
Autor:
Falcão, Anna Trindade, Kraemer, S. B., Fischer, T. C., Schmitt, H. R., Feuillet, L., Crenshaw, D. M., Revalski, M., Maksym, W. P., Vestergaard, M., Elvis, M., Gaskell, C. M., Ho, L. C., Netzer, H., Storchi-Bergmann, T., Turner, T. J., Ward, M. J.
We use the Hubble Space Telescope to analyse the extended [O III] 5007A emission in seven bright radio-quiet type 1 quasars (QSO1s), focusing on the morphology and physical conditions of their extended Narrow-Line Regions (NLRs). We find NLRs extendi
Externí odkaz:
http://arxiv.org/abs/2410.16053
Autor:
Lewin, Collin, Kara, Erin, Barth, Aaron J., Cackett, Edward M., De Rosa, Gisella, Homayouni, Yasaman, Horne, Keith, Kriss, Gerard A., Landt, Hermine, Gelbord, Jonathan, Montano, John, Arav, Nahum, Bentz, Misty C., Boizelle, Benjamin D., Bontà, Elena Dalla, Brotherton, Michael S., Dehghanian, Maryam, Ferland, Gary J., Fian, Carina, Goad, Michael R., Santisteban, Juan V. Hernández, Ilić, Dragana, Kaastra, Jelle, Kaspi, Shai, Korista, Kirk T., Kosec, Peter, Kovačević, Andjelka, Mehdipour, Missagh, Miller, Jake A., Netzer, Hagai, Neustadt, Jack M. M., Panagiotou, Christos, Partington, Ethan R., Popović, Luka Č., Sanmartim, David, Vestergaard, Marianne, Ward, Martin J., Zaidouni, Fatima
Publikováno v:
ApJ 974 271 (2024)
X-ray reverberation mapping is a powerful technique for probing the innermost accretion disk, whereas continuum reverberation mapping in the UV, optical, and infrared (UVOIR) reveals reprocessing by the rest of the accretion disk and broad-line regio
Externí odkaz:
http://arxiv.org/abs/2409.09115
Autor:
Onoue, Masafusa, Ding, Xuheng, Silverman, John D., Matsuoka, Yoshiki, Izumi, Takuma, Strauss, Michael A., Ward, Charlotte, Phillips, Camryn L., Andika, Irham T., Aoki, Kentaro, Arita, Junya, Baba, Shunsuke, Bieri, Rebekka, Bosman, Sarah E. I., Eilers, Anna-Christina, Fujimoto, Seiji, Habouzit, Melanie, Haiman, Zoltan, Imanishi, Masatoshi, Inayoshi, Kohei, Ito, Kei, Iwasawa, Kazushi, Jahnke, Knud, Kashikawa, Nobunari, Kawaguchi, Toshihiro, Kohno, Kotaro, Lee, Chien-Hsiu, Li, Junyao, Lupi, Alessandro, Lyu, Jianwei, Nagao, Tohru, Overzier, Roderik, Schindler, Jan-Torge, Schramm, Malte, Scoggins, Matthew T., Shimasaku, Kazuhiro, Toba, Yoshiki, Trakhtenbrot, Benny, Trebitsch, Maxime, Treu, Tommaso, Umehata, Hideki, Venemans, Bram, Vestergaard, Marianne, Volonteri, Marta, Walter, Fabian, Wang, Feige, Yang, Jinyi, Zhang, Haowen
Understanding the rapid formation of supermassive black holes (SMBHs) in the early universe requires an understanding of how stellar mass grows in the host galaxies. Here, we perform an analysis of rest-frame optical spectra and imaging from JWST of
Externí odkaz:
http://arxiv.org/abs/2409.07113
Autor:
Edelson, R., Peterson, B. M., Gelbord, J., Horne, K., Goad, M., McHardy, I., Vaughan, S., Vestergaard, M.
We present 1.8 years of near-daily Swift monitoring of the bright, strongly variable Type 1 AGN Fairall 9. Totaling 575 successful visits, this is the largest such campaign reported to date. Variations within the UV/optical are well-correlated, with
Externí odkaz:
http://arxiv.org/abs/2407.09445
Autor:
Dehghanian, Maryam, Arav, Nahum, Kriss, Gerard A., Mehdipour, Missagh, Byun, Doyee, Walker, Gwen, Sharma, Mayank, Barth, Aaron J., Bentz, Misty C., Boizelle, Benjamin D., Brotherton, Michael S., Cackett, Edward M., Bonta, Elena Dalla, De Rosa, Gisella, Ferland, Gary J., Fian, Carina, Filippenko, Alexei V., Gelbord, Jonathan, Goad, Michael R., Horne, Keith, Homayouni, Yasaman, Ilic, Dragana, Joner, Michael D., Kara, Erin A., Kaspi, Shai, Kochanek, Christopher S., Korista, Kirk T., Kosec, Peter, Kovacevic, Andjelka B., Landt, Hermine, Lewin, Collin, Partington, Ethan R., Popovic, Luka C., Proga, Daniel, Rogantini, Daniele, Siebert, Matthew R., Storchi-Bergmann, Thaisa, Vestergaard, Marianne, Waters, Timothy, Wang, Jian-Min, Zaidouni, Fatima, Zu, Ying
We observed the Seyfert 1 galaxy Mrk817 during an intensive multi-wavelength reverberation mapping campaign for 16 months. Here, we examine the behavior of narrow UV absorption lines seen in HST/COS spectra, both during the campaign and in other epoc
Externí odkaz:
http://arxiv.org/abs/2407.04164
Autor:
Zaidouni, Fatima, Kara, Erin, Kosec, Peter, Mehdipour, Missagh, Rogantini, Daniele, Kriss, Gerard A., Behar, Ehud, Kaastra, Jelle, Barth, Aaron J., Cackett, Edward M., De Rosa, Gisella, Homayouni, Yasaman, Horne, Keith, Landt, Hermine, Arav, Nahum, Bentz, Misty C., Brotherton, Michael S., Bontà, Elena Dalla, Dehghanian, Maryam, Ferland, Gary J., Fian, Carina, Gelbord, Jonathan, Goad, Michael R., Buitrago, Diego H. González, Grier, Catherine J., Hall, Patrick B., Hu, Chen, Ilić, Dragana, Kaspi, Shai, Kochanek, Christopher S., Kovačević, Andjelka B., Kynoch, Daniel, Lewin, Collin, Montano, John, Netzer, Hagai, Neustadt, Jack M. M., Panagiotou, Christos, Partington, Ethan R., Plesha, Rachel, Popović, Luka Č., Proga, Daniel, Storchi-Bergmann, Thaisa, Sanmartim, David, Siebert, Matthew R., Signorini, Matilde, Vestergaard, Marianne, Waters, Tim, Zu, Ying
We present the results of the XMM-Newton and NuSTAR observations taken as part of the ongoing, intensive multi-wavelength monitoring program of the Seyfert 1 galaxy Mrk 817 by the AGN Space Telescope and Optical Reverberation Mapping 2 (AGN STORM 2)
Externí odkaz:
http://arxiv.org/abs/2406.17061
Autor:
Decarli, Roberto, Loiacono, Federica, Farina, Emanuele Paolo, Dotti, Massimo, Lupi, Alessandro, Meyer, Romain A., Mignoli, Marco, Pensabene, Antonio, Strauss, Michael A., Venemans, Bram, Yang, Jinyi, Walter, Fabian, Wolf, Julien, Bañados, Eduardo, Blecha, Laura, Bosman, Sarah, Carilli, Chris L., Comastri, Andrea, Connor, Thomas, Costa, Tiago, Eilers, Anna-Christina, Fan, Xiaohui, Gilli, Roberto, Jun, Hyunsung D., Liu, Weizhe, Marshall, Madeline A., Mazzucchelli, Chiara, Neeleman, Marcel, Onoue, Masafusa, Overzier, Roderik, Pudoka, Maria Anne, Riechers, Dominik A., Rix, Hans-Walter, Schindler, Jan-Torge, Trakhtenbrot, Benny, Trebitsch, Maxime, Vestergaard, Marianne, Volonteri, Marta, Wang, Feige, Zhang, Huanian, Zou, Siwei
Publikováno v:
A&A 689, A219 (2024)
We present JWST/NIRSpec Integral Field Spectroscopy in the rest-frame optical bands of the system PJ308-21, a quasar at $z=6.2342$ caught as its host galaxy interacts with companion galaxies. We detect spatially extended emission of several emission
Externí odkaz:
http://arxiv.org/abs/2406.06697
The rod and slit paradox, as first proposed by R. Shaw, is revisited. In this paradox, a rod of rest length $l_0$ moves parallel to the horizontal x-axis. Simultaneously, a thin sheet parallel to the horizontal xz-plane with a rod-shaped slit of rest
Externí odkaz:
http://arxiv.org/abs/2405.13040
Lasso-type estimators are routinely used to estimate high-dimensional time series models. The theoretical guarantees established for Lasso typically require the penalty level to be chosen in a suitable fashion often depending on unknown population qu
Externí odkaz:
http://arxiv.org/abs/2403.06657