Results 51 to 60 of about 37,962 (225)

Tracking X-Ray Variability in Next-generation EHT Low-luminosity Active Galactic Nucleus Targets

The Astrophysical Journal
We present a 5 month NICER X-ray monitoring campaign for two low-luminosity active galactic nuclei (LLAGNs)—NGC 4594 and IC 1459—with complementary Swift and NuSTAR observations.
Nicole M. Ford, Michael Nowak, Venkatessh Ramakrishnan, Daryl Haggard, Kristen Dage, Dhanya G. Nair, Chi-kwan Chan   +6 more
doaj   +1 more source

Winter‐active spiders (Clubiona) have a hyperactive antifreeze protein with a unique beta‐solenoid fold

The FEBS Journal, EarlyView.
Antifreeze proteins from winter‐active spiders were purified using their affinity for ice. After LC–MSMS characterization, corresponding transcripts were identified. The antifreeze protein folds as a β‐solenoid with a large flat ice‐binding site on one surface and can bind to ice crystals and prevent their growth at −4 °C.
Laurie A. Graham, Stano Pekár, Ina M. Hainer, Peter L. Davies   +3 more
wiley   +1 more source

The fast UV variability of the active galactic nucleus in Fairall 9

, 2014
We present results from a new optical/UV/X-ray monitoring campaign of the luminous Seyfert galaxy Fairall 9 using the Swift satellite. Using the UV-Optical Telescope (UVOT) on Swift, we find correlated optical/UV variability on all time scales ranging ...
Lohfink, Anne, Miller, Neal, Mushotzky, Richard, Reynolds, Christopher, Vasudevan, Ranjan   +4 more
core   +1 more source

Proteomic analysis of the zone of degeneration at the mitosis–meiosis transition stage in wild‐caught male catshark (Scyliorhinus canicula), correlated with an unusually high‐water temperature in the English Channel

Journal of Fish Biology, EarlyView.
Abstract In the context of current global change, variations in water temperature are one of the environmental conditions with serious consequences for marine life, including reproductive processes. In the small spotted catshark Scyliorhinus canicula, spermatogenesis occurs in spermatocysts composed of synchronously developing germ cells associated ...
Fabian Jeanne, Stanislas Pilet, Sean Heighton, Benoît Bernay, Pascal Sourdaine   +4 more
wiley   +1 more source

A Relativistic Jet in the Radio-quiet Active Galactic Nucleus Mrk 110

The Astrophysical Journal Letters
We report the discovery of a relativistic jet in Mrk 110, a narrow-line Seyfert 1 galaxy historically classified as a radio-quiet active galactic nucleus (AGN).
Ailing Wang, Tao An, Kenneth I. Kellermann, Hua Feng, Emmanuel K. Bempong-Manful, Roland Timmerman, Shaoguang Guo   +6 more
doaj   +1 more source

Calorimetry of Active Galactic Nucleus jets: testing plasma composition in Cygnus A

, 2012
We examine plasma composition of jets in active galactic nuclei through the comparison of the total pressure ($P$) with partial pressures of electrons and protons in a cocoon.
Amato, Arnaud, Asano, Asano, Atoyan, Bach, Bach, Blandford, Blundell, Bîrzan, Cavagnolo, Croston, De Young, Dermer, F. Takahara, Garrington, Georganopoulos, Ghisellini, Godfrey, Hardcastle, Harris, Hirotani, Hirotani, Hirotani, Homan, Ichimaru, Isobe, Isobe, Ito, Iwamoto, Iwamoto, Kataoka, Kellermann, Kino, Kirk, Krichbaum, Lazio, Lister, Lister, M. Kino, McKinney, Mehta, Mizuta, N. Kawakatu, Perlman, Quataert, Rachen, Rafferty, Reynolds, Ruszkowski, Scheuer, Sikora, Sironi, Smith, Spitkovsky, Stawarz, Tashiro, Tashiro, Thompson, Uchiyama, Watanabe, Wilson, Wilson, Yaji, Yamasaki   +64 more
core   +1 more source

Technical considerations and review of urinary microRNAs as biomarkers for chronic kidney disease in dogs and cats

Veterinary Clinical Pathology, EarlyView.
Abstract MicroRNAs (miRNAs or miRs) are small, non‐coding RNAs that play a crucial role in gene regulation, making them potential biomarkers for various diseases. In the field of veterinary medicine, there is a growing interest in exploring the diagnostic and therapeutic potential of miRNAs in kidney diseases affecting dogs and cats.
Candice P. Chu, Mary B. Nabity
wiley   +1 more source

Hyperaccretion-driven Relativistic Jets from Massive Collapsars in Active Galactic Nucleus Disks

The Astrophysical Journal
The observable characteristics of gamma-ray bursts embedded in the accretion disk of active galactic nuclei (AGNs) are mainly determined by the jet propagation within the disk.
Yun-Feng Wei, Tong Liu, Bao-Quan Huang
doaj   +1 more source

The Fermi Bubbles. I. Possible Evidence for Recent AGN Jet Activity in the Galaxy

, 2012
The Fermi Gamma-ray Space Telescope reveals two large gamma-ray bubbles in the Galaxy, which extend about 50 degrees (~ 10 kpc) above and below the Galactic center (GC) and are symmetric about the Galactic plane.
Bland-Hawthorn, Blandford, Breitschwerdt, Dobler, Dobler, Dobler, Finkbeiner, Fulai Guo, Gallimore, Ghez, Guo, Guo, Guo, Kharb, Kovalev, Kulsrud, Longair, Martin, Mathews, Mathews, Mathews, Mathews, Rupke, Scheuer, Sofue, Strickland, Strong, Su, William G. Mathews, Yao   +29 more
core   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source