Results 101 to 110 of about 136,010 (238)

A Closer Look at Dwarf Galaxies Exhibiting Mid-infrared Variability: Active Galactic Nuclei Confirmation and Comparison With Nonvariable Dwarf Galaxies

The Astrophysical Journal
Detecting active black holes in dwarf galaxies has proven to be a challenge due to their small size and weak electromagnetic signatures. Mid-infrared variability has emerged as a promising tool that can be used to detect active low-mass black holes in ...
Archana Aravindan, Gabriela Canalizo, Nathan Secrest, Shobita Satyapal, Thomas Bohn   +4 more
doaj   +1 more source

Detection of Maize rough dwarf virus in Spain: a survey of susceptible host genotypes and molecular characterization of two genomic segments of the virus

Phytopathologia Mediterranea, 2014
An increase in the number of plants infected with Maize rough dwarf disease (MRDD) has been reported recently in Spain. The disease was presumed to be caused by Maize rough dwarf virus (MRDV), but there was no conclusive evidence for this assumption. Two
Vilma ORTIZ, Josep BETBESE LUCAS, Antoni LOPEZ QUEROL, Javier ROMERO   +3 more
doaj   +1 more source

Rare Occasions: Tidal Disruption Events Rarely Power the AGNs Observed in Dwarf Galaxies

The Astrophysical Journal
Tidal disruption events (TDEs) could be an important growth channel for massive black holes in dwarf galaxies. Theoretical work suggests that the observed active galactic nuclei (AGNs) in dwarf galaxies are predominantly TDE-powered. To assess this claim,
Joanne Tan, Guang Yang, Jonelle L. Walsh, W. N. Brandt, Bin Luo, Franz E. Bauer, Chien-Ting Chen, Mouyuan Sun, Yongquan Xue   +8 more
doaj   +1 more source

Amino Acid Profiling and Chemometric Relations of Black Dwarf Honey and Bee Pollen. [PDF]

Front Nutr, 2020
Sommano SR, Bhat FM, Wongkeaw M, Sriwichai T, Sunanta P, Chuttong B, Burgett M.   +6 more
europepmc   +1 more source

A failed search for black dwarfs as companions to nearby stars [PDF]

, 1983
R. F. Jameson, M. R. Sherrington, A. B. Giles   +2 more
openalex   +1 more source

Tripling the Census of Dwarf AGN Candidates Using DESI Early Data

The Astrophysical Journal
Using early data from the Dark Energy Spectroscopic Instrument (DESI) survey, we search for active galactic nuclei (AGN) signatures in 410,757 line-emitting galaxies. By employing the BPT emission-line ratio diagnostic diagram, we identify AGNs in 75,928/
Ragadeepika Pucha, S. Juneau, Arjun Dey, M. Siudek, M. Mezcua, J. Moustakas, S. BenZvi, K. Hainline, R. Hviding, Yao-Yuan Mao, D. M. Alexander, R. Alfarsy, C. Circosta, Wei-Jian Guo, V. Manwadkar, P. Martini, B. A. Weaver, J. Aguilar, S. Ahlen, D. Bianchi, D. Brooks, R. Canning, T. Claybaugh, K. Dawson, A. de la Macorra, Biprateep Dey, P. Doel, A. Font-Ribera, J. E. Forero-Romero, E. Gaztañaga, S. Gontcho A Gontcho, G. Gutierrez, K. Honscheid, R. Kehoe, S. E. Koposov, A. Lambert, M. Landriau, L. Le Guillou, A. Meisner, R. Miquel, F. Prada, G. Rossi, E. Sanchez, D. Schlegel, M. Schubnell, H. Seo, D. Sprayberry, G. Tarlé, H. Zou   +48 more
doaj   +1 more source

Determination of Optimum Conditions for the Production of Activated Carbon Derived from Separate Varieties of Coconut Shells

International Journal of Chemical Engineering, 2017
Activated carbons were produced from coconut shells of tall and dwarf tree varieties. The activated carbon from the tall tree variety was initially synthesized using 1 M concentration of each of ZnCl2, H3PO4, and KOH solutions.
E. S. Sanni, M. E. Emetere, J. O. Odigure, V. E. Efeovbokhan, O. Agboola, E. R. Sadiku   +5 more
doaj   +1 more source

Effect of Dwarfing Gene Ddw1 on Height and Agronomic Traits in Spring Triticale in Greenhouse and Field Experiments in a Non-Black Earth Region of Russia [PDF]

, 2019
Pavel Yu. Kroupin, А.Г. Черноок, Gennady I. Karlov, Alexander Soloviev, М.Г. Дивашук   +4 more
openalex   +1 more source

Dynamical Analysis of the Dark Matter and Central Black Hole Mass in the Dwarf Spheroidal Leo I [PDF]

, 2021
M. J. Bustamante-Rosell, Eva Noyola, Karl Gebhardt, Maximilian Fabricius, X. Mazzalay, Jens Thomas, Greg Zeimann   +6 more
openalex   +1 more source

Active Dwarf Galaxy Database. I. Overlap between Active Galactic Nuclei Selected by Different Techniques

The Astrophysical Journal
We assemble a sample of 733 dwarf galaxies ( M _* ≤ 10 ^9.5 M _⊙ ) with signatures of active galactic nuclei (AGN) and explore the intersection between different AGN-selection techniques.
Erik J. Wasleske, Vivienne F. Baldassare
doaj   +1 more source