Frontiers in Astronomy and Space Sciences

Brief Research Report

Accepted on 23 Apr 2025

Ratios of Forbidden [OIII]λλ4959,5007 and [NII]λλ6548,6583 Lines in Nearby Narrow Emission Line Galaxies

in Extragalactic Astronomy

Natasa Bon
Edi Bon
Paola Marziani
Luka C Popovic

Frontiers in Astronomy and Space Sciences

doi 10.3389/fspas.2025.1540522

Original Research

Published on 05 Mar 2025

Searching for nearby diffuse dwarf galaxies in the COSMOS field

in Extragalactic Astronomy

Dong Dong Shi
Xian Zhong Zheng
Zhizheng Pan
Yu Luo
Hongxia Deng
Qunzhi Hua
Xinyu Luo
Qiming Wu

Frontiers in Astronomy and Space Sciences

doi 10.3389/fspas.2025.1560380

519 views

Review

Published on 05 Mar 2025

X-ray properties of coronal emission in radio quiet active galactic nuclei

in Extragalactic Astronomy

Sibasish Laha
Claudio Ricci
John C. Mather
Ehud Behar
Luigi Gallo
Frederic Marin
Rostom Mbarek
Amelia Hankla

Frontiers in Astronomy and Space Sciences

doi 10.3389/fspas.2024.1530392

939 views
1 citation

Mini Review

Published on 20 Feb 2025

The coronal line region of active galactic nuclei

in Extragalactic Astronomy

Alberto Rodríguez-Ardila
Fernando Cerqueira-Campos

Frontiers in Astronomy and Space Sciences

doi 10.3389/fspas.2025.1548632

554 views

Mini Review

Published on 25 Oct 2024

Relativistic reflection modeling in AGN and related variability from PCA: a brief review

in Extragalactic Astronomy

A. Danehkar

Frontiers in Astronomy and Space Sciences

doi 10.3389/fspas.2024.1479301

788 views
1 citation

Mini Review

Published on 19 Sep 2024

Unveiling the quasar main sequence: illuminating the complexity of active galactic nuclei and their evolution

in Extragalactic Astronomy

Swayamtrupta Panda

Frontiers in Astronomy and Space Sciences

doi 10.3389/fspas.2024.1479874

987 views
2 citations

Original Research

Published on 19 Aug 2024

The high energy X-ray probe (HEX-P): the most powerful jets through the lens of a superb X-ray eye

in Extragalactic Astronomy

Lea Marcotulli
Marco Ajello
Markus Böttcher
Paolo Coppi
Luigi Costamante
Laura Di Gesu
Manel Errando
Javier A. García
Andrea Gokus
Ioannis Liodakis

Frontiers in Astronomy and Space Sciences

doi 10.3389/fspas.2024.1290057

1,025 views
1 citation

Original Research

Published on 20 May 2024

The high energy X-ray probe (HEX-P): the future of hard X-ray dual AGN science

in Extragalactic Astronomy

Ryan W. Pfeifle
Peter G. Boorman
Kimberly A. Weaver
Johannes Buchner
Francesca Civano
Kristin Madsen
Daniel Stern
Núria Torres-Albà
Emanuele Nardini
Claudio Ricci

Frontiers in Astronomy and Space Sciences

doi 10.3389/fspas.2024.1304652

1,114 views
6 citations

Original Research

Published on 14 May 2024

The High-Energy X-ray Probe (HEX-P): the circum-nuclear environment of growing supermassive black holes

in Extragalactic Astronomy

P. G. Boorman
N. Torres-Albà
A. Annuar
S. Marchesi
R. W. Pfeifle
D. Stern
F. Civano
M. Baloković
J. Buchner
C. Ricci

Frontiers in Astronomy and Space Sciences

doi 10.3389/fspas.2024.1335459

1,353 views
11 citations

Original Research

Published on 09 May 2024

Modeling the dispersion measure—redshift relation for fast radio bursts

in Extragalactic Astronomy

Eduard Fernando Piratova-Moreno
Luz Ángela García

Frontiers in Astronomy and Space Sciences

doi 10.3389/fspas.2024.1371787

1,461 views
1 citation

Original Research

Published on 24 Apr 2024

SDSS J075217.84 + 193542.2: X-ray weighing of a secondary BH

in Extragalactic Astronomy

Lev Titarchuk
Elena Seifina

Frontiers in Astronomy and Space Sciences

doi 10.3389/fspas.2024.1368633

939 views
1 citation

Original Research

Published on 28 Mar 2024

The high energy X-ray probe (HEX-P): constraining supermassive black hole growth with population spin measurements

in Extragalactic Astronomy

J. M. Piotrowska
J. A. García
D. J. Walton
R. S. Beckmann
D. Stern
D. R. Ballantyne
D. R. Wilkins
S. Bianchi
P. G. Boorman
J. Buchner

Frontiers in Astronomy and Space Sciences

doi 10.3389/fspas.2024.1324796

2,577 views
6 citations

Original Research

Published on 18 Mar 2024

The high energy X-ray probe (HEX-P): bringing the cosmic X-ray background into focus

in Extragalactic Astronomy

F. Civano
X. Zhao
P. G. Boorman
S. Marchesi
T. Ananna
S. Creech
C.-T. Chen
R. C. Hickox
D. Stern
K. Madsen

Frontiers in Astronomy and Space Sciences

doi 10.3389/fspas.2024.1340719

3,285 views
7 citations

Original Research

Published on 05 Jan 2024

The high energy X-ray probe (HEX-P): probing the physics of the X-ray corona in active galactic nuclei

in Extragalactic Astronomy

Elias Kammoun
Anne M. Lohfink
Megan Masterson
Dan R. Wilkins
Xiurui Zhao
Mislav Balokovic
Peter G. Boorman
Riley Connors
Paolo Coppi
Andrew Fabian

Frontiers in Astronomy and Space Sciences

doi 10.3389/fspas.2023.1308056

2,722 views
9 citations

Original Research

Published on 27 Nov 2023

The high energy X-ray probe (HEX-P): studying extreme accretion with ultraluminous X-ray sources

in Extragalactic Astronomy

Matteo Bachetti
Matthew J. Middleton
Ciro Pinto
Andrés Gúrpide
Dominic J. Walton
Murray Brightman
Bret Lehmer
Timothy P. Roberts
Georgios Vasilopoulos
Jason Alford

Frontiers in Astronomy and Space Sciences

doi 10.3389/fspas.2023.1289432

1,850 views
6 citations

Original Research

Published on 03 Oct 2023

Dense gas star formation efficiency and the LHCN (4−3)′/LHCO+(4−3)′ ratio: insights from a statistical study of infrared bright star-forming galaxies

in Extragalactic Astronomy

Qian Jiao
Yu Gao
Qinghua Tan
Yang Gao

Frontiers in Astronomy and Space Sciences

doi 10.3389/fspas.2023.1246978

1,804 views