Zobrazeno 1 - 10
of 191
pro vyhledávání: '"Griffiths, Richard E."'
Over the past several years, the misidentification of SpaceX Starlink satellites as Unidentified Aerial Phenomena (UAP) by pilots and laypersons has generated unnecessary aviation risk and confusion. The many deployment and orbital evolution strategi
Externí odkaz:
http://arxiv.org/abs/2403.08155
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 526, Issue 2, December 2023, Pages 2776-2794
Abell 3827 is a unique galaxy cluster with a dry merger in its core causing a highly-resolved multiple-image configuration of a blue spiral galaxy at $z_\mathrm{s}=1.24$. The surface brightness profiles of four merging galaxies around $z_\mathrm{d}=0
Externí odkaz:
http://arxiv.org/abs/2306.11779
As established in previous papers of this series, observables in highly distorted and magnified multiple images caused by the strong gravitational lensing effect can be used to constrain the distorting properties of the gravitational lens at the imag
Externí odkaz:
http://arxiv.org/abs/2207.01630
Autor:
Griffiths, Richard E., Rudisel, Mitchell, Wagner, Jenny, Hamilton, Timothy, Huang, Po-Chieh, Villforth, Carolin
We report the discovery of a 'folded' gravitationally lensed image, 'Hamilton's Object', found in a HST image of the field near the AGN SDSS J223010.47-081017.8 ($z=0.62$). The lensed images are sourced by a galaxy at a spectroscopic redshift of 0.82
Externí odkaz:
http://arxiv.org/abs/2105.04562
Autor:
Gozaliasl, Ghassem, Finoguenov, Alexis, Tanaka, Masayuki, Dolag, Klaus, Montanari, Francesco, Kirkpatrick, Charles C., Vardoulaki, Eleni, Khosroshahi, Habib G., Salvato, Mara, Laigle, Clotilde, McCracken, Henry J., Ilbert, Olivier, Cappelluti, Nico, Daddi, Emanuele, Hasinger, Guenther, Capak, Peter, Scoville, Nick Z., Toft, Sune, Civano, Francesca, Griffiths, Richard E., Balogh, Michael, Li, Yanxia, Ahoranta, Jussi, Mei, Simona, Iovino, Angela, Henriques, Bruno M. B., Erfanianfar, Ghazaleh
Publikováno v:
MNRAS, 483 (2019), 3545-3565
We present the results of a search for galaxy clusters and groups in the $\sim2$ square degree of the COSMOS field using all available X-ray observations from the XMM-Newton and Chandra observatories. We reach an X-ray flux limit of $3\times10^{-16}\
Externí odkaz:
http://arxiv.org/abs/1812.01604
Autor:
Chang, Yu-Yen, Floc'h, Emeric Le, Juneau, Stéphanie, da Cunha, Elisabete, Salvato, Mara, Civano, Francesca, Marchesi, Stefano, Ilbert, Olivier, Toba, Yoshiki, Lim, Chen-Fatt, Tang, Ji-Jia, Wang, Wei-Hao, Ferraro, Nicholas, Urry, Megan C., Griffiths, Richard E., Kartaltepe, Jeyhan S.
We present a study of the connection between black hole accretion, star formation, and galaxy morphology at z<=2.5. We focus on active galactic nuclei (AGNs) selected by their mid-IR power-law emission. By fitting optical to far-IR photometry with st
Externí odkaz:
http://arxiv.org/abs/1711.00471
Autor:
Suh, Hyewon, Civano, Francesca, Hasinger, Guenther, Lusso, Elisabeta, Lanzuisi, Giorgio, Marchesi, Stefano, Trakhtenbrot, Benny, Allevato, Viola, Cappelluti, Nico, Capak, Peter L., Elvis, Martin, Griffiths, Richard E., Laigle, Clotilde, Lira, Paulina, Riguccini, Laurie, Rosario, David J., Salvato, Mara, Schawinski, Kevin, Vignali, Cristian
We investigate the star formation properties of a large sample of ~2300 X-ray-selected Type 2 Active Galactic Nuclei (AGNs) host galaxies out to z~3 in the Chandra COSMOS Legacy Survey in order to understand the connection between the star formation
Externí odkaz:
http://arxiv.org/abs/1705.03890
Autor:
Taniguchi, Yoshiaki, Kajisawa, Masaru, Kobayashi, Masakazu A. R., Nagao, Tohru, Shioya, Yasuhiro, Scoville, Nick Z., Sanders, David B., Capak, Peter L., Koekemoer, Anton M., Toft, Sune, McCracken, Henry J., Fevre, Olivier Le, Tasca, Lidia, Sheth, Kartik, Renzini, Alvio, Lilly, Simon, Carollo, Marcella, Kovac, Katarina, Ilbert, Olivier, Schinnerer, Eva, Fu, Hai, Tresse, Laurence, Griffiths, Richard E., Civano, Francesca
We report a discovery of 6 massive galaxies with both extremely large Lya equivalent width and evolved stellar population at z ~ 3. These MAssive Extremely STrong Lya emitting Objects (MAESTLOs) have been discovered in our large-volume systematic sur
Externí odkaz:
http://arxiv.org/abs/1507.04439
Autor:
Isobe, Naoki, Kubota, Aya, Makishima, Kazuo, Gandhi, Poshak, Griffiths, Richard E., Dewangan, Gulab C., Itoh, Takeshi, Mizuno, Tsunuefumi
This paper reports the discovery of a bright X-ray transient source, Suzaku J1305-4913, in the south-west arm of the nearby Seyfert II galaxy NGC 4945. It was detected at a 0.5 -- 10 keV flux of $2.2 \times 10^{-12}$ erg cm$^{-2}$ s$^{-1}$ during the
Externí odkaz:
http://arxiv.org/abs/0708.1804
Autor:
Itoh, Takeshi, Done, Chris, Makishima, Kazuo, Madejski, Grzegorz, Awaki, Hisamitsu, Isobe, Naoki, Gandhi, Poshak, Dewangan, Gulab C., Griffiths, Richard E., Anabuki, Naohisa, Okajima, Takashi, Reeves, James, Takahashi, Tadayuki, Ueda, Yoshihiro, Eguchi, Satohi, Yaqoob, Tahir
Suzaku observed a nearby Seyfert 2 galaxy NGC4945, which hosts one of the brightest active galactic nuclei above 20 keV. Combining data from the X-ray CCD camera (XIS) and the Hard X-ray Detector (HXD), the AGN intrinsic nuclear emission and its repr
Externí odkaz:
http://arxiv.org/abs/0708.1201