Results 141 to 150 of about 25,311 (211)

Constraining Star Formation in M87 Using Deep Hubble Space Telescope UV Data

The Astrophysical Journal
We analyzed the deepest Hubble Space Telescope F275W ultraviolet (UV) imaging of M87 to obtain the most robust constraints on its star formation rate (SFR) and star formation history (SFH).
Prathamesh Tamhane, William Waldron, Ming Sun, Silvia Martocchia, Claudia Maraston, Alessandro Boselli, William Forman, Massimo Gaspari, Juhi Tiwari, Megan Donahue, G. Mark Voit, Tim Edge, Grant Tremblay, Daniel Thomas   +13 more
doaj   +1 more source

Revisiting Radio Variability of the Blazar 3C 454.3

The Astrophysical Journal
We examine lengthy radio light curves of the flat spectrum radio galaxy 3C 454.3 for possible quasiperiodic oscillations (QPOs). The data used in this work were collected at five radio frequencies, 4.8, 8.0, 14.5, 22.0, and 37.0 GHz between 1979 and 2013
Ashutosh Tripathi, Alok C. Gupta, Krista Lynne Smith, Paul J. Wiita, Margo F. Aller, Alexandr E. Volvach, Anne Lähteenmäki, Hugh D. Aller, Merja Tornikoski, Larisa N. Volvach   +9 more
doaj   +1 more source

Analysis of Jet Dynamics and Collimation Characteristics of 0241+622 on Parsec Scales

The Astrophysical Journal
We conducted a detailed analysis of the jet structure and dynamics of the source 0241+622 on milliarcsecond scales. We stacked images from multiple epochs to better recover the cross section of the jet. By analyzing the relationship between jet width and
Haitian Shang, Wei Zhao, Xiaoyu Hong, Xu-zhi Hu   +3 more
doaj   +1 more source

Imaging black holes: a VLBI success story. [PDF]

Astrophys Space Sci
Zensus JA.
europepmc   +1 more source

Reduced gas accretion onto galaxies due to effects of external giant radio lobes. [PDF]

Proc Natl Acad Sci U S A
Qiu Y, Cen R.
europepmc   +1 more source

Performance of the Sardinia Radio Telescope Using the Dual-Polarized Cryogenic C-Low Receiver in the 4.2-5.6 GHz Frequency Band. [PDF]

Sensors (Basel)
Schirru L, Egron E, Ladu A, Gaudiomonte F, Attoli A, Cabras A, Carboni G, Loi F, Marchegiani P, Marongiu M, Mulas S, Murgia M, Pili M, Pellizzoni A, Poppi S, Schirru F, Vacca V.   +16 more
europepmc   +1 more source

Discovery of spectacular quasar-driven superbubbles in red quasars. [PDF]

Sci Adv, 2023
Shen L, Liu G, He Z, Zakamska NL, Glikman E, Greene JE, Hu W, Mou G, Wylezalek D, Rupke DSN.   +9 more
europepmc   +1 more source

Assigning Degrees of Stochasticity to Blazar Light Curves in the Radio Band Using Complex Networks. [PDF]

Entropy (Basel), 2022
Acosta-Tripailao B, Max-Moerbeck W, Pastén D, Moya PS.   +3 more
europepmc   +1 more source

The Ellis-Baldwin test. [PDF]

Philos Trans A Math Phys Eng Sci
Secrest NJ.
europepmc   +1 more source

CONfirm: A Spectacular Galactic Scale MHD Powered Wind in ESO~320-G030

, 2023
Gorski M, Aalto S, König S, Wethers C, Yang C, Onishi K, Falstad N, Barcos-Muñoz L, Combes F, Dìaz-Santos T, Evans A, Gallagher J, Garcia-Burillo S, González-Alfonso E, Harada N, Henkel C, Imanishi M, Linden S, Muller S, Sato M, Mangum J, Martin S, Stanley F, Werf Pvd, Viti S, Wada K.   +25 more
europepmc   +1 more source