Results 111 to 120 of about 1,494,639 (351)

The Contribution Of Outer HI Disks To The Merging Binary Black Hole Population

, 2017
We investigate the contribution of outer HI disks to the observable population of merging black hole binaries. Like dwarf galaxies, the outer HI disks of spirals have low star formation rates and lower metallicities than the inner disks of spirals. Since
Belczynski, Chris, Bellovary, Jillian, Brooks, Alyson, Chakrabarti, Sukanya, Chang, Philip, Gladysz, Wojciech, O'Shaughnessy, Richard, Shen, Sijing   +7 more
core   +1 more source

Theoretical Re-evaluations of Scaling Relations between SMBHs and Their Host Galaxies—1. Effect of Seed BH Mass

Frontiers in Astronomy and Space Sciences, 2017
We use a semi-analytic model of galaxy formation and investigate how the mass of a seed black hole affect the scaling relation between black hole mass and bulge mass at z ~ 0.
Hikari Shirakata, Toshihiro Kawaguchi, Takashi Okamoto, Ryu Makiya, Ryu Makiya, Tomoaki Ishiyama, Yoshiki Matsuoka, Masahiro Nagashima, Motohiro Enoki, Taira Oogi, Masakazu A. R. Kobayashi   +10 more
doaj   +1 more source

Quasi‐Resonant Tunneling Transport in Magnetic CrBr3

Advanced Physics Research, EarlyView.
This study investigates tunneling mechanisms in van der Waals (vdW) magnetic materials, with a focus on CrBr3. Unlike bulk materials, the vdW gap influences tunnel barriers, enabling layer‐resolved quasi‐resonant tunneling (QRT) through ladder‐shaped barriers.
Gen Long, Peiheng Jiang, Zishu Zhou, Meizhen Huang, Binglan Wu, Zhicheng Zhong, Sunan Ding, Ning Wang, Guangyu Zhang   +8 more
wiley   +1 more source

X-Ray Bright Active Galactic Nuclei in Local Dwarf Galaxies: Insights from eROSITA

The Astrophysical Journal
Although supermassive black holes (SMBHs) reside in the heart of virtually every massive galaxy, it remains debated whether dwarf galaxies commonly host SMBHs. Because low-mass galaxies may retain memory of the assembly history of their black holes (BHs),
Andrea Sacchi, Ákos Bogdán, Urmila Chadayammuri, Angelo Ricarte   +3 more
doaj   +1 more source

Histochemical indications for a chemically complex signal produced by the cervical gill slit gland of the pygmy sperm whale (Kogia breviceps)

The Anatomical Record, EarlyView.
Abstract The pygmy sperm whale (Kogia breviceps) possesses an exocrine gland associated with its false gill slit pigmentation pattern. The cervical gill slit gland is a compound tubuloalveolar gland that produces a holocrine secretion and displays maturational changes in size and secretory histology. While the morphology of the cervical gill slit gland
Tiffany F. Keenan, William A. McLellan, Sentiel A. Rommel, Alexander M. Costidis, Craig A. Harms, J. G. M. Thewissen, Susan J. Rehorek, David S. Rotstein, Mark D. Gay, Alison R. Taylor, Heather N. Koopman, Ying Wang, Stephanie Kamel, D. Ann Pabst   +13 more
wiley   +1 more source

The symbiotic system AG Draconis. Soft X-ray bremsstrahlung from the nebulae

, 2010
The modeling of UV and optical spectra emitted from the symbiotic system AG Draconis, adopting collision of the winds, predicts soft X-ray bremsstrahlung from nebulae downstream of the reverse shock with velocities > 150 km/s and intensities comparable ...
Angeloni, Angeloni, Angeloni, Chevalier, Contini, Contini, Contini, Contini, Contini, Contini, Contini, Fekel, Girard, González-Riestra, Greiner, Jansen, Kwok, Leibowitz, Lutz, Marcella Contini, Mikolajewska, Mikolajewska, Mürset, Nussbaumer, Paczynski, Reach, Rodolfo Angeloni, Rushton, Schmid, Skopal, Smith, Tomov, Young   +32 more
core   +1 more source

Discovery of a cataclysmic variable with a sub-stellar companion [PDF]

, 2001
We find that the ROSAT source 1RXS J105010.3-140431 is a cataclysmic variable with orbital period of 88.6 minutes and a spectrum closely resembling WZ Sge. In particular, emission lines are flanked by Stark-broadened absorption wings probably originating
Beuermann, C. Sterken, Ciardi, Diaz, Eggleton, Friend, Hamada, Hameury, Hamuy, Hamuy, Hessman, Horne, Howell, Howell, Howell, Hubeny, Jordan, M. Diaz, Marsh, Mason, Mennickent, Mennickent, Mitchell, R. E. Mennickent, Robinson, Scargle, Schneider, Schwarzenberg-Czerny, Shafter, Shoning, Skidmore, Smak, Smith, Spruit, Szkody, Tonry, van Teeseling, W. Skidmore, Warner, Williams, Wood   +40 more
core   +2 more sources

Discovery of sexual dimorphism of the laryngeal sac in the common minke whale Balaenoptera acutorostrata

The Anatomical Record, EarlyView.
Abstract Mysticetes, or baleen whales, have an air sac on the ventral surface of the larynx known as the “laryngeal sac.” The primary hypothesis regarding this structure's function is that it is involved in sound production. However, several other functions have been proposed, including air recycling, air storage, and even buoyancy control.
Gen Nakamura, Hiroko Yamada, Ayumi Hirose, Hikari Maeda, Joy S. Reidenberg, Hidehiro Kato, Shinho Park, Yoshihiro Fujise   +7 more
wiley   +1 more source

White dwarfs stripped by massive black holes: sources of coincident gravitational and electromagnetic radiation

, 2010
White dwarfs inspiraling into black holes of mass $\MBH\simgt 10^5M_\odot$ are detectable sources of gravitational waves in the LISA band. In many of these events, the white dwarf begins to lose mass during the main observational phase of the inspiral ...
A. M. Beloborodov, Barack, Beloborodov, Bildsten, Cutler, Evans, Freitag, Gair, Hils, Hopman, Hopman, Hopman, Hopman, Hughes, I. Zalamea, Ivanov, Ivanov, K. Menou, Kobayashi, Kocsis, Kocsis, Lang, Menou, Miller, Peters, Rathore, Ritter, Rosswog, Sathyaprakash, Sepinsky, Sesana, Shakura, Sigurdsson   +32 more
core   +1 more source

Stellar Physics and General Relativity

Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.
ABSTRACT The general theory of relativity is currently established as the most precise theory of gravity supported by observations, and its application is diverse ranging from astronomy to cosmology, while its application to astrophysics has been restricted only to compact stars due to the assumption that the Newtonian approximation is sufficient for ...
Shuichi Yokoyama
wiley   +1 more source