Results 111 to 120 of about 1,073,559 (305)

Narrow-Line Seyfert 1 Galaxies With Absorbed Jets–Insights From Radio Spectral Index Maps

Frontiers in Astronomy and Space Sciences, 2021
Narrow-line Seyfert 1 (NLS1) galaxies are active galactic nuclei (AGN) believed to be in the early stages of their evolution. A fraction of them have been found to host relativistic jets.
Emilia Järvelä , Marco Berton , Marco Berton , Luca Crepaldi    +3 more
doaj   +1 more source

Potential Spectral Tuning of the Tapetum Lucidum in a Broadly Distributed Ungulate

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.
ABSTRACT The tapetum lucidum, a biological reflector system found in the eyes of many vertebrate species, enhances visual sensitivity in low light conditions by reflecting light back through the retina. The structure of the ungulate tapetum fibrosum is unique, and its reflectance varies temporally in reindeer (Rangifer tarandus).
Blaise A. Newman, Billy R. Hammond Jr., Gino J. D'Angelo   +2 more
wiley   +1 more source

High-energy neutrinos from radio galaxies [PDF]

, 2014
The IceCube experiment has recently reported the first observation of high-energy cosmic neutrinos. Their origin is still unknown. In this paper, we investigate the possibility that they originate in active galaxies.
J. Tjus, B. Eichmann, F. Halzen, A. Kheirandish, S. M. Saba   +4 more
semanticscholar   +1 more source

Observation of Radio Galaxies with HAWC [PDF]

Proceedings of 35th International Cosmic Ray Conference — PoS(ICRC2017), 2017
The High Altitude Water Cherenkov (HAWC) Gamma-Ray Observatory is an extensive air shower array located in Puebla, Mexico. The closest radio galaxy within the HAWC field of view, M87, has been detected in very high energies. In this work we report upper limits on the TeV -ray flux of the radio galaxy M87.
Daniel Avila, Nissim Fraija, Ruben Alfaro, Marc Klinger, Maria Magdalena González, Antonio Galván   +5 more
openaire   +3 more sources

ATAC‐seq in Emerging Model Organisms: Challenges and Strategies

Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, EarlyView.
Principle of ATAC‐seq (left), overview of arthropod species with published ATAC‐seq data (middle), summary of experimental design (right). ABSTRACT The Assay for Transposase‐Accessible Chromatin with sequencing (ATAC‐seq) is a versatile and widely utilized method for identifying potential regulatory regions, such as promoters and enhancers, within a ...
Duğçar Ebrar Erdoğan, Shadi Karimifard, Mozhgan Khodadadi, Liucong Ling, Luisa Linke, Ana Catalán, Vincent Doublet, Amanda Glaser‐Schmitt, Oliver Niehuis, Katja Nowick, Antonella Soro, Natascha Turetzek, Barbara Feldmeyer, Nico Posnien   +13 more
wiley   +1 more source

The Clustering Of Galaxies Around Radio-Loud AGNs

, 2013
We examine the hypothesis that mergers and close encounters between galaxies can fuel AGNs by increasing the rate at which gas accretes towards the central black hole.
Beutler, Florian, Brown, Michael J. I., Floyd, David J. E., Jones, D. Heath, Worpel, Hauke   +4 more
core   +1 more source

The VVDS-VLA Deep Field - IV: Radio-optical properties [PDF]

, 2008
(abridged) We use the 1.4 GHz VIMOS-VLA Deep Survey and the optical VVDS and the CFHT-LS to compare the properties of radio loud galaxies with respect to the whole population of optical galaxies.
A. Bongiorno, A. Cappi, A. Iovino, A. Mazure, A. Pollo, A. Zanichelli, Afonso, Auriemma, B. Garilli, B. Marano, B. Meneux, Barger, Bell, Benn, Best, Bondi, Bondi, Bongiorno, Brown, Bruzual, C. Adami, C. Marinoni, Cara, Chabrier, Ciliegi, Coleman, Colla, Condon, Cram, D. Bottini, D. Maccagni, D. Vergani, E. Perez-Montero, E. Zucca, F. Lamareille, Franceschini, Franzetti, G. Vettolani, G. Zamorani, Gavignaud, Giacintucci, Gruppioni, Gruppioni, H. J. McCracken, H. R. De Ruiter, Haarsma, Haarsma, Hammer, Hopkins, I. Gavignaud, Ilbert, Ilbert, Ilbert, Ivison, J. Brinchmann, L. de Ravel, L. Gregorini, L. Guzzo, L. Pozzetti, L. Tresse, Le Fèvre, Lilly, Lonsdale, M. Bolzonella, M. Bondi, M. Radovich, M. Scodeggio, Magliocchetti, McCracken, McCracken, Norris, O. Cucciati, O. Ilbert, O. Le Fèvre, Owen, P. Ciliegi, P. Franzetti, P. Memeo, P. Merluzzi, P. Parma, Pozzetti, Prandoni, R. Merighi, R. Pellò, R. Scaramella, S. Arnouts, S. Bardelli, S. Charlot, S. de la Torre, S. Foucaud, S. Paltani, S. Temporin, Salpeter, Sandage, Schmidt, Seymour, Smolcic, T. Contini, Tresse, U. Abbas, V. Le Brun, Windhorst, Y. Mellier, Zucca   +103 more
core   +6 more sources

Parent population of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies [PDF]

, 2015
Flat-spectrum radio-loud Narrow-Line Seyfert 1 galaxies (NLS1s) are a recently discovered class of $\gamma$-ray emitting Active Galactic Nuclei (AGN), that exhibit some blazar-like properties which are explained with the presence of a relativistic jet ...
M. Berton, L. Foschini, S. Ciroi, V. Cracco, G. L. Mura, M. Lister, S. Mathur, B. Peterson, J. Richards, P. R. U. D. Padova, I. Brera, P. University, O. University   +12 more
semanticscholar   +1 more source

On dynamical models for radio galaxies [PDF]

New Astronomy Reviews, 2002
The tailed radio galaxies that have been called ``Type I'' are not a uniform set. To study their dynamics, we have used the Ledlow-Owen data set, which provides a new sample of 250 radio galaxies in nearby Abell clusters. These sources divide into two clear categories based on their radio morphology.
Frazer N. Owen, T. Markovic, P. Hardee, M. J. Ledlow, Jean A. Eilek   +4 more
openaire   +3 more sources

Synergies in Self‐Assembly—From Supramolecular Polymers to Defined Hierarchical Superstructures

Journal of Polymer Science, EarlyView.
Shaping supramolecular polymers built from molecular building blocks into superstructures with defined dimensions. Synergies within supramolecular architectures such as chirality or an additional second orthogonal driving force that does not interfere with the central supramolecular motif facilitate the confinement of the growth of these ...
Klaus Kreger, Florian Behrendt, Johannes C. Brendel   +2 more
wiley   +1 more source