Results 61 to 70 of about 102,596 (294)

Playing Hard with Si: Challenges and Opportunities for New Materials in Radiation Therapy Dosimetry

Advanced Materials, EarlyView.
Silicon has been a cornerstone material of radiation therapy dosimetry for many decades, providing somewhat unchallenged performance. However, there are caveats to its use, requiring complex designs and, often, correction factors to provide accurate measurements.
James Cayley, Ilia Filipev, Jeremy A. Davis, Vincent de Rover, Dean Cutajar, Enbang Li, Bradley M. Oborn, Marco Petasecca, Anatoly Rosenfeld, Michael L. F. Lerch   +9 more
wiley   +1 more source

Dwarf Galaxies with Radio-excess Active Galactic Nuclei in the Very Large Array Sky Survey

The Astrophysical Journal
We present a systematic search for radio active galactic nuclei (AGNs) in dwarf galaxies using recent observations taken by the Very Large Array Sky Survey (VLASS).
John-Michael Eberhard, Amy E. Reines, Hansung B. Gim, Jeremy Darling, Jenny E. Greene   +4 more
doaj   +1 more source

Cosmic ray acceleration to ultrahigh energy in radio galaxies [PDF]

EPJ Web of Conferences, 2019
The origin of ultrahigh energy cosmic rays (UHECRs) is an open question. In this proceeding, we first review the general physical requirements that a source must meet for acceleration to 10-100 EeV, including the consideration that the shock is not ...
Matthews James H., Bell Anthony R., Araudo Anabella T., Blundell Katherine M.   +3 more
doaj   +1 more source

Narrow-Line Seyfert 1 Galaxies With Absorbed Jets–Insights From Radio Spectral Index Maps

Frontiers in Astronomy and Space Sciences, 2021
Narrow-line Seyfert 1 (NLS1) galaxies are active galactic nuclei (AGN) believed to be in the early stages of their evolution. A fraction of them have been found to host relativistic jets.
Emilia Järvelä , Marco Berton , Marco Berton , Luca Crepaldi    +3 more
doaj   +1 more source

Influence of major mergers on the radio emission of elliptical galaxies

, 2012
We investigate the influence of major mergers on the radio emission of elliptical galaxies. We use a complete sample of close pairs, which contains 475 merging and 1828 non-merging paired elliptical galaxies of ...
Altschuler, Auriemma, Barton, Becker, Best, Best, Brown, Calvani, Condon, Condon, Feretti, Giuricin, González Delgado, Govoni, Heckman, Heckman, Heckman, Hummel, Hummel, J. L. Han, Keel, Kocevski, L. G. Hou, Lambas, McCarthy, Ramos Almeida, Robaina, Sanders, Schawinski, Schawinski, Stocke, Tadhunter, Tal, Wen, White, Wilkinson, Y. H. Wen, Z. L. Wen   +37 more
core   +1 more source

Cosmological Studies with Radio Galaxies and Supernovae [PDF]

, 2008
Physical sizes of extended radio galaxies can be employed as a cosmological "standard ruler", using a previously developed method. Eleven new radio galaxies are added to our previous sample of nineteen sources, forming a sample of thirty objects with ...
Alexander, Alexander, Antonucci, Barai, Blandford, Buchalter, C. P. O'Dea, Chen, Daly, Daly, Daly, Daly, Davis, De Young, Dunlop, E. J. Guerra, Fanaroff, Gopal-Krishna & Wiita, Guerra, Guerra, Gurvits, Jackson, Jackson, Kapahi, Kapahi, Kayser, Kharb, Laing, Leahy, Leahy, Leahy, Longair, Matthew P. Mory, O'Dea, P. Kharb, Pelletier, Podariu, Rawlings, Readhead, Rees, Riess, Ruth A. Daly, S. Baum, S. G. Djorgovski, Samushia, Scheuer, Singal, Wall, Wood-Vasey, Wright, Xu   +50 more
core   +3 more sources

Highest redshift radio galaxies [PDF]

SPIE Proceedings, 2000
At low redshifts powerful radio sources are uniquely associated with massive galaxies, and are thought to be powered by supermassive black holes. Modern 8m -- 10m telescopes may be used used to find their likely progenitors at very high redshifts to study their formation and evolution.
openaire   +4 more sources

The Microjansky Radio Galaxy Population [PDF]

The Astrophysical Journal, 2007
20 pages, Accepted by The Astrophysical Journal (scheduled for 1 Jan 2007), color figures 2 and 3 can be found at http://www.astro.wisc.edu/~barger/radiopaper ...
Wei-Hao Wang, Amy J. Barger, Amy J. Barger, Lennox L. Cowie   +3 more
openaire   +2 more sources

Thermochromic Gires‐Tournois Resonators with Tellurium for Battery Thermal Runaway Warning

Advanced Materials, EarlyView.
A thermochromic Gires‐Tournois (GT) resonator with a thin tellurium layer enables rapid, reversible, and untethered detection of battery surface temperature <80 °C. Exploiting tellurium's refractive index change driven by a thermally induced phase transition between solid and quasi‐liquid states, the GT resonator visualizes heat propagation, providing ...
Hyun Min Kim, JuHyeong Lee, Juhwan Kim, Gyurin Kim, Jang‐Hwan Han, Joo Hwan Ko, Young Min Song, Hyeon‐Ho Jeong   +7 more
wiley   +1 more source

Probing the Impact of Radio-mode Feedback on the Properties of the Cool Circumgalactic Medium

The Astrophysical Journal
We explore the influence of radio-mode feedback on the properties of the cool circumgalactic medium (CGM). To this end, we assemble a statistical sample of approximately 30,000 radio galaxies with background quasars by combining optical spectroscopic ...
Yu-Ling Chang, Ting-Wen Lan, J. Xavier Prochaska, Lucas Napolitano, Abhijeet Anand, J. Aguilar, S. Ahlen, D. Brooks, T. Claybaugh, A. de la Macorra, Arjun Dey, P. Doel, S. Gontcho A Gontcho, J. Guy, S. Juneau, T. Kisner, A. Lambert, M. Landriau, L. Le Guillou, M. Manera, P. Martini, A. Meisner, R. Miquel, J. Moustakas, A. D. Myers, J. Nie, C. Poppett, M. Rezaie, G. Rossi, E. Sanchez, M. Schubnell, H. Seo, D. Sprayberry, G. Tarlé, B. A. Weaver, H. Zou   +35 more
doaj   +1 more source