Results 51 to 60 of about 4,403,550 (384)

First detection of GeV emission from an ultraluminous infrared galaxy: Arp 220 as seen with the Fermi Large Area Telescope

, 2016
Cosmic rays (CRs) in starburst galaxies produce high energy gamma-rays by colliding with the dense interstellar medium (ISM). Arp 220 is the nearest ultra luminous infrared galaxy (ULIRG) that has star-formation at extreme levels, so it has long been ...
Liu, Ruo-Yu, Peng, Fang-Kun, Tang, Qing-Wen, Wang, Jun-Feng, Wang, Xiang-Yu   +4 more
core   +1 more source

The Infrared-X-ray continuum correlation in Active Galactic Nuclei

, 2003
The correlation between the soft X-ray and near infrared emission from AGN is analysed using composite models by the code SUMA. We find new evidences for differences in ranges of parameters which characterize the NLR of Seyfert galaxies and LINERs ...
Campos, P. E., Contini, M., Viegas, S. M.   +2 more
core   +2 more sources

Soft gamma-ray constraints on a bright flare from the Galactic Center supermassive black hole

, 2009
Sagittarius A* (Sgr A*) is the supermassive black hole residing at the center of the Milky Way. It has been the main target of an extensive multiwavelength campaign we carried out in April 2007.
A. Goldwurm, Aitken, Baganoff, Baganoff, Baganoff, Balick, Bélanger, Bélanger, Bélanger, Chiar, Clénet, Cotera, Courvoisier, D. Porquet, Degenaar, Do, Doeleman, E. Pantin, Eckart, Eckart, Eckart, Eckart, Eckart, Eisenhauer, F. Melia, F. Yusef-Zadeh, Falanga, Falanga, Ferrando, G. Bélanger, G. Trap, Genzel, Ghez, Ghez, Ghez, Ghez, Gillessen, Goldwurm, Goldwurm, Goldwurm, Goldwurm, Haubois, Herrnstein, Hinton, Hornstein, Jansen, K. Dodds-Eden, Krabbe, Krawczynski, Lagage, Lebrun, Lenzen, Liu, Liu, Liu, Liu, Lund, Lutz, Markoff, Marrone, Melia, Melia, Meyer, Meyer, Meyer, Morris, N. Grosso, P. Ferrando, P.O. Lagage, Pantin, Porquet, Porquet, R. Genzel, R. Terrier, Reid, Reid, Revnivtsev, Revnivtsev, Rousset, Rybicki, S. Gillessen, Schödel, Schödel, Stolovy, Tagger, Telesco, Trippe, Tsuboi, Ubertini, Wang, Westergaard, Winkler, Yuan, Yuan, Yusef-Zadeh, Yusef-Zadeh, Yusef-Zadeh, Zhao, Zhao, Zylka, Čadež   +100 more
core   +3 more sources

The role of histone modifications in transcription regulation upon DNA damage

FEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

The Nova V5584 Sgr: A Short Review

Acta Polytechnica CTU Proceedings, 2015
The nova V5584 Sgr was discovered during 2009 October. It has been monitored in different domains of the electromagnetic spectrum: optical, infrared and X-rays. The optical and infrared observations suggest that V5584 Sgr is a Fe II nova that formed dust.
R. Poggiani
doaj   +1 more source

Effect of infrared belt and hot water bag on labor pain intensity among primiparous: a randomized controlled trial

BMC Pregnancy and Childbirth, 2023
Background Labor pain is complex, paradoxical and varied in every parturient woman. Management of labor pain has been a crucial component in maternity care. Heat therapy is one of the proposed method for labor pain relief.
Fatemeh Dastjerd, Fatemeh Erfanian Arghavanian, Ameneh Sazegarnia, Farideh Akhlaghi, Habibollah Esmaily, Masoumeh Kordi   +5 more
doaj   +1 more source

Bright Coherent Ultrahigh Harmonics in the keV X-ray Regime from Mid-Infrared Femtosecond Lasers [PDF]

Science, 2012
From Long to Short When you play a string instrument, you raise the frequency, or pitch, of the note by shortening the vibrating portion of the string: Drop the length in half, and you hear a harmonic at double the frequency.
T. Popmintchev, Ming-Chang Chen, D. Popmintchev, P. Arpin, S. Brown, S. Alisauskas, G. Andriukaitis, T. Balciunas, O. Mücke, A. Pugžlys, A. Baltuska, B. Shim, S. Schrauth, A. Gaeta, C. Hernández-García, L. Plaja, A. Becker, A. Jaroń-Becker, M. Murnane, H. Kapteyn   +19 more
semanticscholar   +1 more source

Pioglitazone plus (−)‐epigallocatechin gallate: a novel approach to enhance osteogenic performance in aged bone marrow mesenchymal stem cells

FEBS Open Bio, EarlyView.
Aged human bmMSCs are seeded in the scaffold. Osteoblastic induction can slightly increase cell's bone‐forming activity to produce bone‐like tissues, shown as the sporadic xylenol orange‐stained spots (the lower left image). Notably, pioglitazone plus EGCG co‐treatment dramatically increases cell's bone‐forming activity and bone‐like tissue production (
Ching‐Yun Chen, Jia‐Ci Jhang, Chun‐Yi Peng, Quốc Cường Nguyễn, Feng‐Huei Lin, Hung‐Ming Wu, Shankung Lin   +6 more
wiley   +1 more source

Gamma-Ray Cosmology and Tests of Fundamental Physics

Galaxies, 2022
The propagation of gamma-rays over cosmological distances is the subject of extensive theoretical and observational research at GeV and TeV energies. The mean free path of gamma-rays in the cosmic web is limited above 100 GeV due to the production of ...
Jonathan Biteau, Manuel Meyer
doaj   +1 more source

Infrared and visible scintillation of Ho3+-doped YAG and YLF crystals [PDF]

, 2018
In our effort to develop a new kind of detector for low-energy, low-rate energy deposition events we have investigated the cathodo- and radioluminescence of Ho:YAG and Ho:YLF single crystals in an extended wavelength range from 200 nm to 2200 nm.
Borghesani, A. F., Carugno, G., Chiossi, F.   +2 more
core   +2 more sources