Zobrazeno 1 - 10
of 52 900
pro vyhledávání: '"A. Horne"'
Autor:
Partington, Ethan R., Cackett, Edward M., Edelson, Rick, Horne, Keith, Gelbord, Jonathan, Kara, Erin, Malacaria, Christian, Miller, Jake A., Steiner, James F., Sanna, Andrea
The Seyfert 1 AGN Fairall 9 was targeted by NICER, Swift, and ground-based observatories for a $\sim$1000-day long reverberation mapping campaign. The following analysis of NICER spectra taken at a two-day cadence provides new insights into the struc
Externí odkaz:
http://arxiv.org/abs/2410.21432
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:
Netzer, Hagai, Goad, Michael R., Barth, Aaron J., Cackett, Edward M., Horne, Keith, Hu, Chen, Kara, Erin, Korista, Kirk T., Kriss, Gerard A., Lewin, Collin, Montano, John, Arav, Nahum, Behar, Ehud, Brotherton, Michael S., Chelouche, Doron, de Rosa, Gisella, Bonta, Elena Dalla, Dehghanian, Maryam, Ferland, Gary J., Fian, Carina, Homayouni, Yasaman, Ilic, Dragana, Kaspi, Shai, Kovacevic, Andjelka B., Landt, Hermine, Popovic, Luka C., Storchi-Bergmann, Thaisa, Wang, Jian-Min, Zaidouni, Fatima
The local (z=0.0315) AGN Mrk 817, was monitored over more than 500 days with space-borne and ground-based instruments as part of a large international campaign AGN STORM 2. Here, we present a comprehensive analysis of the broad-band continuum variati
Externí odkaz:
http://arxiv.org/abs/2410.02652
Autor:
Henkel, Owen, Horne-Robinson, Hannah, Dyshel, Maria, Ch, Nabil, Moreau-Pernet, Baptiste, Abood, Ralph
This paper introduces AMMORE, a new dataset of 53,000 math open-response question-answer pairs from Rori, a learning platform used by students in several African countries and conducts two experiments to evaluate the use of large language models (LLM
Externí odkaz:
http://arxiv.org/abs/2409.17904
Archean atmospheric evolution is the transition from an abiological atmosphere, to an atmosphere for which the composition and therefore climate is highly altered by life. We review the key processes and transitions in this evolution.
Comment: 1
Comment: 1
Externí odkaz:
http://arxiv.org/abs/2409.13105
Autor:
Fries, Logan B., Trump, Jonathan R., Horne, Keith, Davis, Megan C., Grier, Catherine J., Shen, Yue, Anderson, Scott F., Dwelly, Tom, Homayouni, Y., Morrison, Sean, Runnoe, Jessie C., Trakhtenbrot, Benny, Assef, Roberto J., Bizyaev, Dmitry, Brandt, W. N., Breiding, Peter, Browstein, Joel, Chakraborty, Priyanka, Hall, P. B., Koekemoer, Anton M., Ibarra-Medel, Héctor J., Martínez-Aldama, Mary Loli, Negrete, C. Alenka, Pan, Kaike, Ricci, Claudio, Scheider, Donald P., Sharp, Hugh W., Smith, Theodore B., Stone, Zachary, Temple, Matthew J.
We present a velocity-resolved reverberation mapping analysis of the hypervariable quasar RM160 (SDSS J141041.25+531849.0) at z = 0.359 with 153 spectroscopic epochs of data representing a ten-year baseline (2013-2023). We split the baseline into two
Externí odkaz:
http://arxiv.org/abs/2409.12229
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:
Zhang, Michael, Bean, Jacob L., Wilson, David, Duvvuri, Girish, Schneider, Christian, Knutson, Heather A., Dai, Fei, Collins, Karen A., Watkins, Cristilyn N., Schwarz, Richard P., Barkaoui, Khalid, Shporer, Avi, Horne, Keith, Sefako, Ramotholo, Murgas, Felipe, Palle, Enric
TOI-836 is a $\sim2-3$ Gyr K dwarf with an inner super Earth ($R=1.7\,R_\oplus$, $P=3.8\,d$) and an outer mini Neptune ($R=2.6\,R_\oplus$, $P=8.6\,d$). Recent JWST/NIRSpec 2.8--5.2 $\mu$m observations have revealed flat transmission spectra for both
Externí odkaz:
http://arxiv.org/abs/2409.08318
Autor:
Hajra, Rajkumar, Tsurutani, Bruce Tsatnam, Lu, Quanming, Horne, Richard B., Lakhina, Gurbax Singh, Yang, Xu, Henri, Pierre, Du, Aimin, Gao, Xingliang, Wang, Rongsheng, Lu, San
The 23-24 April 2023 double-peak (SYM-H intensities of -179 and -233 nT) intense geomagnetic storm was caused by interplanetary magnetic field southward component Bs associated with an interplanetary fast-forward shock-preceded sheath (Bs of 25 nT),
Externí odkaz:
http://arxiv.org/abs/2409.08118
Autor:
Tsurutani, Bruce T., Sen, Abhijit, Hajra, Rajkumar, Lakhina, Gurbax S., Horne, Richard B., Hada, Tohru
Publikováno v:
published through: Journal of Geophysical Research: Space Physics, volume : 129, number: e2024JA032622, year: 2024
Updated summaries of the August 1972 and March 1989 space weather events have been constructed. The features of these two events are compared to the Carrington 1859 event and a few other major space weather events. It is concluded that solar active r
Externí odkaz:
http://arxiv.org/abs/2409.00452