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8
The universal shape of the X-ray variability power spectrum of AGN up to z ∼ 3
Authors of the article assert that they studied the ensemble X-ray variability properties of active galactic nuclei (AGN) over large ranges of timescale (20 ks ≤ T ≤ 14 yr), redshift (0 ≤ z ≲ 3), luminosity (1040 erg s−1 ≤ LX ≤ 1046 erg s−1), and black hole (BH) mass (106 ≤ M⊙ ≤ 109). The authors show that the data collected from archival observations and previous literature studies are fully consistent with a universal PSD form, which does not show any evidence for systematic evolution of shape or amplitude with redshift or luminosity, even if there may be differences between individual AGN at a given redshift or luminosity.
Date:
May 8, 2023
Creator:
Paolillo, Maurizio; Papadakis, I.; Brandt, William Nielsen; Bauer, Franz E.; Lanzuisi, G.; Allevato, V. et al.
Object Type:
Article
System:
The UNT Digital Library
The Colony Courier-Leader (The Colony, Tex.), Vol. 42, No. 14, Ed. 1 Sunday, May 8, 2022
Weekly newspaper from The Colony, Texas that includes local, state, and national news along with advertising.
Date:
May 8, 2022
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
L-1 Pierce (5-8-21)
Photograph of MFD Ladder 1, a 2020 Pierce Velocity. 2000 gpm pump, 300 gallon tank, and a 100' midship-mounted platform ladder.
Date:
May 8, 2021
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
A New Citation Recommendation Strategy Based on Term Functions in Related Studies Section
This article focuses on citation recommendation in the related studies section by applying the term function of a citation context, potentially improving the efficiency of writing a literature review. The citation recommendation strategy can be helpful for valuable citation discovery, semantic scientific retrieval, and automatic literature review generation.
Date:
May 8, 2021
Creator:
Chen, Haihua
Object Type:
Article
System:
The UNT Digital Library
Crosby County News (Ralls, Tex.), Vol. 133, No. 19, Ed. 1 Friday, May 8, 2020
Weekly newspaper from Ralls, Texas that includes local, state, and national news along with advertising.
Date:
May 8, 2020
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Dallas Voice (Dallas, Tex.), Vol. 37, No. 1, Ed. 1 Friday, May 8, 2020
Weekly newspaper from Dallas, Texas that includes local, state, and national news and advertising of interest to the Lesbian, Gay, Bisexual, and Transgender (LGBT) community.
Date:
May 8, 2020
Creator:
Nash, Tammye
Object Type:
Newspaper
System:
The Portal to Texas History
Gainesville Daily Register (Gainesville, Tex.), Vol. 130, No. 178, Ed. 1 Friday, May 8, 2020
Daily newspaper from Gainesville, Texas that includes local, state, and national news along with advertising.
Date:
May 8, 2020
Creator:
Einselen, Sarah
Object Type:
Newspaper
System:
The Portal to Texas History
Texas Register, Volume 45, Number 19, Pages 2927-3176, May 8, 2020
A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date:
May 8, 2020
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History