Results 41 to 50 of about 46,640 (252)

SDSS-IV MaNGA: How Galaxy Interactions Influence Active Galactic Nuclei

The Astrophysical Journal, 2023
We present a comparative study of active galactic nuclei (AGN) between galaxy pairs and isolated galaxies with the final data release of the MaNGA integral field spectroscopic survey.
Joshua L. Steffen, Hai Fu, Joel R. Brownstein, J. M. Comerford, I. Cruz-González, Y. Sophia Dai, Niv Drory, Arran C. Gross, C. Alenka Negrete, Renbin Yan   +9 more
doaj   +1 more source

The Effect of Mass Ratio on the Morphology and Time-scales of Disc Galaxy Mergers [PDF]

, 2009
The majority of galaxy mergers are expected to be minor mergers. The observational signatures of minor mergers are not well understood, thus there exist few constraints on the minor merger rate.
Abadi, Abazajian, Barnes, Bell, Bell, Bell, Bell, Binney, Bournaud, Bournaud, Boylan-Kolchin, Boylan-Kolchin, Broeils, Conselice, Conselice, Cox, Cox, Cox, Croton, Darg, De Jong, Di Matteo, Fakhouri, Genel, Guo, Hopkins, Hopkins, Jennifer M. Lotz, Joel R. Primack, Jogee, Johansson, Johnston, Jonsson, Jonsson, Jonsson, Katz, Kennicutt, Kitzbichler, Lacey, Leitherer, Lotz, Lotz, Lotz, Lotz, Moster, Naab, Naab, Patrik Jonsson, Patton, Purcell, Reichard, Robertson, Rocha, Rudnick, Shen, Somerville, Springel, Springel, Springel, Stewart, T. J. Cox, Velazquez   +61 more
core   +1 more source

A Green Pea Starburst Arising from a Galaxy–Galaxy Merger

The Astrophysical Journal Letters, 2022
Abstract Green Pea galaxies are low-redshift starburst dwarf galaxies, with properties similar to those of the high-redshift galaxies that reionized the universe. We report the first mapping of the spatial distribution of atomic hydrogen (Hi) in and around a Green Pea, GP J0213+0056 at z = 0.0399, using the Giant Metrewave Radio ...
S. Purkayastha, N. Kanekar, J. N. Chengalur, S. Malhotra, J. Rhoads, T. Ghosh   +5 more
openaire   +2 more sources

The AGN Luminosity Fraction in Merging Galaxies [PDF]

, 2018
Galaxy mergers are key events in galaxy evolution, often causing massive starbursts and fueling active galactic nuclei (AGN). In these highly dynamic systems, it is not yet precisely known how much starbursts and AGN respectively contribute to the total ...
Ashby, Matthew L. N., Dietrich, Jeremy, Hayward, Christopher C., Martínez-Galarza, Juan Rafael, Padilla, Andrés F. Ramos, Rosenthal, Lee, Smith, Howard A., Weiner, Aaron S., Willner, S. P., Zezas, Andreas   +9 more
core   +2 more sources

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

An Excess of Active Galactic Nuclei Triggered by Galaxy Mergers in MaNGA Galaxies of Stellar Mass ∼1011 M ⊙

The Astrophysical Journal
To facilitate new studies of galaxy-merger-driven fueling of active galactic nuclei (AGNs), we present a catalog of 387 AGNs that we have identified in the final population of over 10,000 z < 0.15 galaxies observed by the Sloan Digital Sky Survey-IV ...
Julia M. Comerford, Rebecca Nevin, James Negus, R. Scott Barrows, Michael Eracleous, Francisco Müller-Sánchez, Namrata Roy, Aaron Stemo, Thaisa Storchi-Bergmann, Dominika Wylezalek   +9 more
doaj   +1 more source

Episodic activities of supermassive black holes at redshift $z\le 2$: driven by mergers?

, 2010
It has been suggested for quite a long time that galaxy mergers trigger activities of supermassive black holes (SMBHs) on the grounds of imaging observations of individual galaxies.
Alexander, Barnes, Bentz, Berti, Chatzichristou, Chen Hu, Corbin, Cox, Dahlen, De Robertis, Erwin, Faber, Ferrarese, Ferrarese, Förster Schreiber, Gebhardt, Genzel, Haehnelt, Haiman, Hopkins, Hopkins, Hopkins, Hopkins, Hopkins, Hopkins, Hughes, Häring, Jahnke, Jian-Min Wang, Kim, King, King, Kinney, Kollmeier, Lacey, Lauer, Lin, Magorrian, Marconi, Marconi, Martini, Martini, Munoz Marin, Netzer, Reichard, Robaina, Ryan, Schmitt, Shemmer, Shen, Shen, Shields, Shields, Shu Zhang, Soltan, Springel, Tacconi ., Tacconi ., Taniguchi, Toomre, Tremaine, Volonteri, Volonteri, Wang, Wang, Wang, Wang, Wyithe, Wyithe, Yan-Rong Li, Ye-Fei Yuan   +70 more
core   +1 more source

Formation Rates of Black Hole Accretion Disk Gamma-Ray Bursts [PDF]

, 1999
While many models have been proposed for GRBs, those currently favored are all based upon the formation of and/or rapid accretion into stellar mass black holes.
Fryer, C. L., Hartmann, D. H., Woosley, S. E.   +2 more
core   +2 more sources

Microfluidic Engineering of Chitosan‐Coated Nanoemulsions for Controlled Release and Stability in Space Pharmaceutics

Advanced Materials Technologies, EarlyView.
Microfluidic engineering enables the fabrication of chitosan‐coated, melatonin‐loaded nanoemulsions with controlled release and enhanced physicochemical stability for space pharmaceutics. Interfacial biopolymer coating modulates droplet behavior under accelerated thermal stress and simulated microgravity.
Modupe Adebowale, Nguyen Van Duc Long, Philip M Williams, Volker Hessel   +3 more
wiley   +1 more source

Identifying Mergers in the Legacy Surveys with Few-shot Learning

The Astrophysical Journal Supplement Series
Galaxy mergers exert a pivotal influence on the evolutionary trajectory of galaxies and the expansive development of cosmic structures. The primary challenge encountered in machine learning–based identification of merging galaxies arises from the ...
Shoulin Wei, Xiang Song, Zhijian Zhang, Bo Liang, Wei Dai, Wei Lu, Junxi Tao   +6 more
doaj   +1 more source