Zobrazeno 1 - 10
of 11 909
pro vyhledávání: '"Luís C."'
Autor:
de Paula, Marco A. A., Junior, Haroldo C. D. Lima, Cunha, Pedro V. P., Herdeiro, Carlos A. R., Crispino, Luís C. B.
In relativistic mechanics, the 4-velocity and the 4-momentum need not be parallel. This allows their norm to have a different sign. This possibility occurs in nonlinear electrodynamics (NED) models minimally coupled to Einstein's theory. Surprisingly
Externí odkaz:
http://arxiv.org/abs/2412.18659
There is growing evidence for star formation inside outflows of active galactic nuclei (AGNs). The formed stars are injected into bulges and give rise to perturbation of bulges. In this paper, we investigate the issues of non-rotating, spherically sy
Externí odkaz:
http://arxiv.org/abs/2412.17725
Models of active galactic nuclei often invoke a close physical association between the broad-line region and the accretion disk. We evaluate this theoretical expectation by investigating the relationship between the inclination angle of the BLR ($\th
Externí odkaz:
http://arxiv.org/abs/2412.09451
Intercellular exchange networks are essential for the adaptive capabilities of populations of cells. While diffusional exchanges have traditionally been difficult to map, recent advances in nanotechnology enable precise probing of exchange fluxes wit
Externí odkaz:
http://arxiv.org/abs/2412.09088
Autor:
Lin, Ruqiu, Zheng, Zhen-Ya, Jiang, Chunyan, Yuan, Fang-Ting, Ho, Luis C., Wang, Junxian, Jiang, Linhua, Rhoads, James E., Malhotra, Sangeeta, Barrientos, L. Felipe, Wold, Isak, Infante, Leopoldo, Zhu, Shuairu, Ji, Xiang, Fu, Xiaodan
Recently, the James Webb Space Telescope (JWST) has revealed a new class of high redshift (high-$z$, $z>4$) compact galaxies which are red in the rest-frame optical and blue in the rest-frame UV as V-shaped spectral energy distributions (SEDs), refer
Externí odkaz:
http://arxiv.org/abs/2412.08396
Autor:
Joshi, Ravi, Das, Sarbeswar, Fumagalli, Michele, Fossati, Matteo, Péroux, Céline, Chaudhary, Reena, Yesuf, Hassen M., Ho, Luis C.
We study the galaxies hosting ultra-strong MgII (USMgII) absorbers at small impact parameters of $\sim$2" (5 - 20 kpc), spanning a redshift range of $0.4 \le z \le 1.7$, using deep, high-resolution images from Hyper Suprime-Cam Subaru Strategic Surve
Externí odkaz:
http://arxiv.org/abs/2412.07835
Autor:
Homayouni, Y., Jiang, Yuanzhe, Brandt, W. N., Grier, C. J., Trump, Jonathan R., Shen, Yue, Horne, Keith, Hall, Patrick B., Anderson, Scott F., Ho, Luis C., Schneider, D. P.
Multi-year observations from the Sloan Digital Sky Survey Reverberation Mapping (SDSS-RM) project have significantly increased the number of quasars with reliable reverberation-mapping lag measurements. We statistically analyze target properties, lig
Externí odkaz:
http://arxiv.org/abs/2412.06885
We study the rest-frame ultraviolet-optical color gradients of 669 galaxies at $4
Externí odkaz:
http://arxiv.org/abs/2412.03455
Autor:
Lu, Kai-Xing, Li, Yan-Rong, Wu, Qingwen, Ho, Luis C., Zhang, Zhi-Xiang, Feng, Hai-Cheng, Li, Sha-Sha, Chen, Yong-Jie, Sun, Mouyuan, Shu, Xinwen, Guo, Wei-Jian, Cheng, Cheng, Wang, Jian-Guo, Kim, Dongchan, Wang, Jian-Min, Bai, Jin-Ming
Changing-look active galactic nuclei (CL-AGNs), characterized by emerging or disappearing of broad lines accompanied with extreme continuum flux variability, have drawn much attention for their potential of revealing physical processes underlying AGN
Externí odkaz:
http://arxiv.org/abs/2411.18917
Autor:
Santos, Luis C. N.
In this paper, we investigate a generalization of Kiselev black holes by introducing a varying equation of state parameter for the anisotropic fluid surrounding the black hole. We extend this model by allowing $w$ in the expression $p_t(r)/\rho(r) =
Externí odkaz:
http://arxiv.org/abs/2411.18804