Results 71 to 80 of about 5,279,442 (297)

The pulsar luminosity function

, 2003
We construct and examine the pulsar luminosity function using the new list which includes data for 1328 radio pulsars. In this work, the luminosity function for 1400 MHz is constructed for the first time.
Guseinov, OH, Ozkan, S, Yazgan, E, Tagieva, SO   +3 more
core   +1 more source

No Luminous Little Red Dots: A Sharp Cutoff in Their Luminosity Function

The Astrophysical Journal Letters
One of the most surprising results of early James Webb Space Telescope (JWST) observations is the discovery of an abundance of red, compact, broad-line objects dubbed “little red dots” (LRDs) at z  > 4.
Yilun Ma, Jenny E. Greene, Marta Volonteri, Andy D. Goulding, David J. Setton, Marianna Annunziatella, Eiichi Egami, Xiaohui Fan, Vasily Kokorev, Ivo Labbe, Xiaojing Lin, Danilo Marchesini, Jorryt Matthee, Themiya Nanayakkara, Luke Robbins, Anna Sajina, Marcin Sawicki   +16 more
doaj   +1 more source

Luminosity functions and initial mass function variations from large samples of H II regions and molecular clouds

Astronomy & Astrophysics
Large high-quality samples of HII regions and their parent giant molecular clouds (GMCs) are now available for local galaxies. It is therefore possible to investigate the links between the CO and Hα luminosity functions and whether massive stars form in ...
Braine J., Corbelli E.
doaj   +1 more source

Optimizing photoactivation of PA‐mCherry for optical pooled CRISPR screens

FEBS Open Bio, EarlyView.
Photoactivatable PA‐mCherry finds widespread use to optically tag individual cells. However, confocal 405 nm UV laser‐scanning (normal scan) is much less efficient than widefield UV illumination, limiting the use of PA‐mCherry on confocal instruments. We remedy this limitation by reporting that rapid and repeated confocal scanning with a low‐intensity,
Sravasti Mukherjee, Giulia Zanetti, Bram van den Broek, Kees Jalink   +3 more
wiley   +1 more source

What shapes the luminosity function of galaxies? [PDF]

, 2003
We investigate the physical mechanisms that shape the luminosity function of galaxies in hierarchical clustering models. Beginning with the mass function of dark matter halos in the CDM ( cold dark matter) cosmology, we show, in incremental steps, how ...
Frenk, C.S., Benson, A.J., Cole, S., Bower, R.G., Lacey, C.G., Baugh, C.M.   +5 more
core   +1 more source

The z ≳ 9 Galaxy UV Luminosity Function from the JWST Advanced Deep Extragalactic Survey: Insights into Early Galaxy Evolution and Reionization

The Astrophysical Journal
The high-redshift UV luminosity function provides important insights into the evolution of early galaxies. JWST has revealed an unexpectedly large population of bright ( M _UV ≲ −20) galaxies at z ≳ 10, implying fundamental changes in the star-forming ...
Lily Whitler, Daniel P. Stark, Michael W. Topping, Brant Robertson, Marcia Rieke, Kevin N. Hainline, Ryan Endsley, Zuyi Chen, William M. Baker, Rachana Bhatawdekar, Andrew J. Bunker, Stefano Carniani, Stéphane Charlot, Jacopo Chevallard, Emma Curtis-Lake, Eiichi Egami, Daniel J. Eisenstein, Jakob M. Helton, Zhiyuan Ji, Benjamin D. Johnson, Pablo G. Pérez-González, Pierluigi Rinaldi, Sandro Tacchella, Christina C. Williams, Christopher N. A. Willmer, Chris Willott, Joris Witstok   +26 more
doaj   +1 more source

JWST COSMOS-3D: Spectroscopic census and luminosity function of [O III] emitters at 6.75 < z < 9.05 in COSMOS

Astronomy & Astrophysics
We present a catalogue of spectroscopically selected [O III]+Hβ emitters at 6.75 
Meyer Romain A., Wang Feige, Kakiichi Koki, Brammer Gabe, Champagne Jackie, Jurk Katharina, Li Zihao, Li Zijian, Musin Marat, Satyavolu Sindhu, Schindler Jan-Torge, Shuntov Marko, Xu Yi, Zou Siwei, Bian Fuyan, Casey Caitlin, Egami Eiichi, Fan Xiaohui, Jiang Danyang, Laporte Nicolas, Liu Weizhe, Oesch Pascal A., Tasca Lidia, Yang Jinyi, Zhang Zijian, Akins Hollis, Cai Zheng, Coulter Dave A., Huang Jiamu, Li Mingyu, Liu Weizhe, Liang Yongming, Jin Bingcheng, Jin Xiangyu, Kartaltepe Jeyhan, Koekemoer Anton M., Matharu Jasleen, Pudoka Maria, Tee Wei-Leong, Witten Callum, Zhang Haowen, Zhu Yongda   +41 more
doaj   +1 more source

The Structure Function of Mid-infrared Variability in Low-redshift Active Galactic Nuclei

The Astrophysical Journal, 2023
Using the multi-epoch mid-infrared (MIR) photometry from the Wide-field Infrared Survey Explorer spanning a baseline of ∼10 yr, we extensively investigate the MIR variability of nearby active galactic nuclei (AGNs) at 0.15 < z < 0.4.
Suyeon Son, Minjin Kim, Luis C. Ho
doaj   +1 more source

RoundMi: A quantitative method to analyze mitochondrial morphology in mitotic cells

FEBS Open Bio, EarlyView.
RoundMi is a workflow for rapid analysis of mitochondrial morphology in mitotic cells. By combining adaptive preprocessing with automated segmentation and quantification, it enables accurate measurements from single focal plane images, reducing acquisition time and computational demands while remaining compatible with high‐throughput fixed and live ...
Elmira Parvindokht Bararpour, Christine Volmert, Valentina Piano   +2 more
wiley   +1 more source

General Physical Properties of Fermi Blazars

The Astrophysical Journal Supplement Series, 2023
We study the general physical properties of Fermi blazars using the Fermi fourth source catalog data (4FGL-DR2). The quasi-simultaneous multiwavelength data of Fermi blazars are fitted by using the one-zone leptonic model to obtain some physical ...
Yongyun Chen, Qiusheng Gu, Junhui Fan, Xiaoling Yu, Xiaogu Zhong, Hongyu Liu, Nan Ding, Dingrong Xiong, Xiaotong Guo   +8 more
doaj   +1 more source