Zobrazeno 1 - 10
of 20 605
pro vyhledávání: '"A. Behar"'
Autor:
Laha, Sibasish, Ricci, Claudio, Mather, John C., Behar, Ehud, Gallo, Luigi C., Marin, Frederic, Mbarek, Rostom, Hankla, Amelia
Active galactic nuclei (AGN) are powerful sources of panchromatic radiation. All AGN emit in X-rays, contributing around $\sim 5-10\%$ of the AGN bolometric luminosity. The X-ray emitting region, popularly known as the corona, is geometrically and ra
Externí odkaz:
http://arxiv.org/abs/2412.11321
Autor:
Mehdipour, Missagh, Brenneman, Laura W., Miller, Jon M., Costantini, Elisa, Behar, Ehud, Gallo, Luigi C., Kaastra, Jelle S., Laha, Sibasish, Nowak, Michael A.
Black hole accretion in active galactic nuclei (AGN) is coupled to the evolution of their host galaxies. Outflowing winds in AGN can play an important role in this evolution through the resulting feedback mechanism. Multi-wavelength spectroscopy is k
Externí odkaz:
http://arxiv.org/abs/2412.03493
Autor:
Mochizuki, Yuto, Tsujimoto, Masahiro, Kelley, Richard L., Meulen, Bert Vander, Enoto, Teruaki, Nagai, Yutaro, Done, Chris, Pradhan, Pragati, Hell, Natalie, Pottschmidt, Katja, Ebisawa, Ken, Behar, Ehud
The Fe K$\alpha$ fluorescence line emission in X-ray spectra is a powerful diagnostic tool for various astrophysical objects to reveal the distribution of cold matter around photo-ionizing sources. The advent of the X-ray microcalorimeter onboard the
Externí odkaz:
http://arxiv.org/abs/2411.12978
Job recommendation gathers many challenges well-known in recommender systems. First, it suffers from the cold start problem, with the user (the candidate) and the item (the job) having a very limited lifespan. It makes the learning of good user and i
Externí odkaz:
http://arxiv.org/abs/2411.15146
We present the pc-scale radio spectra of a representative sample of 13 Palomar-Green radio-quiet quasars, based on our new Very Long Baseline Array (VLBA) observations at 8.4 and 23.6 GHz and our earlier VLBA studies at 1.5 and 5.0 GHz. The radio cor
Externí odkaz:
http://arxiv.org/abs/2410.07889
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:
Behar, E., Pucci, F., Wedlund, C. Simon, Henri, P., Ballerini, G., Preisser, L., Califano, F.
Publikováno v:
A&A 692, A53 (2024)
Over the past decades, near-Earth spacecraft observations have provided insights into the physics of the bow shock, suggesting that solar wind intrinsic turbulence influences the bow shock dynamics. On the other hand, theoretical studies, based on gl
Externí odkaz:
http://arxiv.org/abs/2409.17942
Autor:
Chen, Sina, Laor, Ari, Behar, Ehud, Baldi, Ranieri D., Gelfand, Joseph D., Kimball, Amy E., McHardy, Ian M., Orosz, Gabor, Paragi, Zsolt
Does a broad-line region (BLR) wind in radio-quiet (RQ) active galactic nuclei (AGN) extend to pc scales and produce radio emission? We explore the correlations between a pc-scale radio wind and the BLR wind in a sample of 19 RQ Palomar-Green (PG) qu
Externí odkaz:
http://arxiv.org/abs/2408.15934
Autor:
Bogensberger, David, Miller, Jon M., Mushotzky, Richard, Brandt, W. N., Kammoun, Elias, Zoghbi, Abderahmen, Behar, Ehud
The structure of the jet in Cen A is likely better revealed in X-rays than in the radio band, which is usually used to investigate jet proper motions. In this paper, we analyze Chandra ACIS observations of Cen A from 2000 to 2022 and develop an algor
Externí odkaz:
http://arxiv.org/abs/2408.14078
Autor:
Saleh-Natur, Julia, Behar, Ehud, Reich, Omer, Tarem, Shlomit, Tarem, Zvika, Vdovin, Alex, Feigenboim, Amir, Rahin, Roi, Kaidar, Avner, Agalarian, Hovhannes, Osovizky, Alon, Ghelman, Max
We present a full-size engineering model of GALI - The GAmma-ray burst Localizing Instrument, composed of 362 CsI(Tl) small cubic scintillators, distributed within a small volume of $\sim2$l, and read out by silicon photo-multipliers. GALI can provid
Externí odkaz:
http://arxiv.org/abs/2408.02144