Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
4.3
2.5
Journals
Universe
Special Issues
New Insights into High-Energy Astrophysics, Galaxies, and Cosmology—Celebrating the 10th...
share announcement

New Insights into High-Energy Astrophysics, Galaxies, and Cosmology—Celebrating the 10th Anniversary of the Re-establishment of the Department of Astronomy at Xiamen University (2012–2022)

A special issue of Universe (ISSN 2218-1997).

Deadline for manuscript submissions: 15 December 2024 | Viewed by 3213

Special Issue Editors

Prof. Dr. Taotao Fang

E-Mail Website
Guest Editor
Department of Astronomy, Xiamen University, Xiamen, Fujian 361005, China
Interests: formation and evolution of galaxies; extragalactic astronomical observation; the large-scale structure of the universe
Prof. Dr. Weimin Gu

E-Mail Website
Guest Editor
Department of Astronomy, Xiamen University, Xiamen 361005, China
Interests: accretion disks; searching for stellar-mass black holes; X-ray binaries; AGN; fast radio bursts; gamma-ray bursts
Prof. Dr. Tong Liu

E-Mail Website
Guest Editor
Department of Astronomy, Xiamen University, Xiamen 361005, China
Interests: black hole accretion and time-domain astronomy
Prof. Dr. Beibei Liu

E-Mail Website
Guest Editor
1. Institute for Astronomy, School of Physics, Zhejiang University, Hangzhou 310027, China
2. Center for Cosmology and Computational Astrophysics, Institute for Advanced Study in Physics, Zhejiang University, Hangzhou 310027, China
Interests: exoplanet; planet formation; planet dynamics

Special Issue Information

Dear Colleagues,

The Department of Astronomy at Xiamen University, one of the earliest in modern Chinese history, was founded by Prof. Ching-Sung Yu in 1927. However, the department was suspended after Dr. Yu became the Director of the Astronomical Research Institute at Academia Sinica in 1929. In 2000, after Prof. Ju-fu Lu joined Xiamen University, the astronomy program began to flourish. His efforts attracted a strong team of researchers, leading to the official re-establishment of the Department of Astronomy in 2012. Today, the department’s primary research areas include compact objects and high-energy astrophysics, galaxy formation and evolution, and cosmology.

To celebrate the 10th anniversary of the re-establishment of the Department of Astronomy, we are pleased to present this Special Issue, which aims to summarize and provide perspectives on the department’s current and future research. We have invited our colleagues and alumni to contribute reviews and research papers, compiling their work into this comprehensive volume. The scope of this Special Issue covers a wide range of topics, including multi-messenger time-domain astronomy, exoplanets and compact objects, galaxy formation and evolution, high-energy astrophysics, large-scale structures, and cosmology. We hope this collection will highlight the significant advancements and ongoing research within our department and inspire future discoveries in the field of astronomy.

Prof. Dr. Taotao Fang
Prof. Dr. Weimin Gu
Prof. Dr. Tong Liu
Prof. Dr. Beibei Liu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Universe is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • compact objects
  • exoplanets
  • interstellar medium
  • galaxies
  • active galactic nuclei
  • cosmology
  • large-scale structures
  • time-domain astronomy

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • e-Book format: Special Issues with more than 10 articles can be published as dedicated e-books, ensuring wide and rapid dissemination.

Further information on MDPI's Special Issue polices can be found here.

Published Papers (5 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

Jump to: Review

17 pages, 584 KiB  
Article
The Properties of an Edge-On Low Surface Brightness Galaxies Sample
by Tian-Wen Cao, Zi-Jian Li, Pei-Bin Chen, Venu M. Kalari, Cheng Cheng, Gaspar Galaz, Hong Wu and Junfeng Wang
Universe 2024, 10(11), 432; https://doi.org/10.3390/universe10110432 - 20 Nov 2024
Viewed by 485
Abstract
We analyzed the properties of a sample of edge-on low-surface brightness galaxies, which are referred to as Cao23 ELSBGs. Cao23 ELSBGs exhibit a wide range of luminosities (−22 < Mr < −13) with a mean scale length of 3.19 ± 1.48 kpc. [...] Read more.
We analyzed the properties of a sample of edge-on low-surface brightness galaxies, which are referred to as Cao23 ELSBGs. Cao23 ELSBGs exhibit a wide range of luminosities (−22 < Mr < −13) with a mean scale length of 3.19 ± 1.48 kpc. Compared to HI-rich dwarf ELSBGs, Cao23 ELSBGs display more extended disk structures and redder (g-r) colors. They are also, on average, more massive than HI-rich dwarf ELSBGs. Star formation rates (SFRs) were calculated using WISE 12 μm luminosity conversions and spectral energy distribution (SED) fitting methods, respectively. Cao23 ELSBGs fall below the main sequence with specific star formation rates (sSFRs) primarily in the range of 0.01–0.1 Gyr−1. More massive Cao23 LSBGs tend to have lower sSFRs. Additionally, we derived the non-parametric star formation histories (SFHs) of Cao23 ELSBGs by SED fitting, dividing the SFHs into seven look back time bins with constant SFRs assumed for each bin. Our analysis indicates that high-mass (M∗ > 109.0M⊙) Cao23 ELSBGs assembled their mass earlier than their lower-mass counterparts, supporting a downsizing trend for LSBGs. Full article
(This article belongs to the Special Issue New Insights into High-Energy Astrophysics, Galaxies, and Cosmology—Celebrating the 10th Anniversary of the Re-establishment of the Department of Astronomy at Xiamen University (2012–2022))
►▼ Show Figures

Figure 1

22 pages, 3167 KiB  
Article
The Composite Spectral Energy Distribution of Quasars Is Surprisingly Universal Since Cosmic Noon
by Zhenyi Cai
Universe 2024, 10(11), 431; https://doi.org/10.3390/universe10110431 - 19 Nov 2024
Viewed by 623
Abstract
Leveraging the photometric data of the Sloan Digital Sky Survey and the Galaxy Evolution Explorer (GALEX), we construct mean/median spectral energy distributions (SEDs) for unique bright quasars in redshift bins of 0.2 and up to z≃3, after taking the GALEX [...] Read more.
Leveraging the photometric data of the Sloan Digital Sky Survey and the Galaxy Evolution Explorer (GALEX), we construct mean/median spectral energy distributions (SEDs) for unique bright quasars in redshift bins of 0.2 and up to z≃3, after taking the GALEX non-detection into account. Further correcting for the absorption of the intergalactic medium, these mean/median quasar SEDs constitute a surprisingly redshift-independent mean/median composite SED from the rest-frame optical down to ≃500 A˚ for quasars with bolometric luminosity brighter than 1045.5ergs−1. Moreover, the mean/median composite quasar SED is plausibly also independent of black hole mass and Eddington ratio, and suggests similar properties of dust and gas in the quasar host galaxies since cosmic noon. Both the mean and median composite SEDs are nicely consistent with previous mean composite quasar spectra at wavelengths beyond ≃1000 A˚, but at shorter wavelengths, are redder, indicating, on average, less ionizing radiation than previously expected. Through comparing the model-predicted to the observed composite quasar SEDs, we favor a simply truncated disk model, rather than a standard thin disk model, for the quasar central engine, though we request more sophisticated disk models. Future deep ultraviolet facilities, such as the China Space Station Telescope and the Ultraviolet Explorer, would prompt revolutions in many aspects, including the quasar central engine, production of the broad emission lines in quasars, and cosmic reionization. Full article
(This article belongs to the Special Issue New Insights into High-Energy Astrophysics, Galaxies, and Cosmology—Celebrating the 10th Anniversary of the Re-establishment of the Department of Astronomy at Xiamen University (2012–2022))
►▼ Show Figures

Figure 1

14 pages, 13951 KiB  
Article
Strange and Odd Morphology Extragalactic Radio Sources (STROMERSs): A Faint Images of the Radio Sky at Twenty-Centimeters (FIRST) Look at the Strange and Odd Radio Sources
by Soumen Kumar Bera, Tapan K. Sasmal, Soumen Mondal, Taotao Fang and Xuelei Chen
Universe 2024, 10(9), 347; https://doi.org/10.3390/universe10090347 - 28 Aug 2024
Viewed by 775
Abstract
We report the identification of an extremely rare and peculiar set of irregular radio sources, termed “STROMERSs” (STRange and Odd Morphology Extragalactic Radio Sources).ingThe irregular radio sources with very anomalous morphologies that make them exceptionally different from all the known classes and subclasses [...] Read more.
We report the identification of an extremely rare and peculiar set of irregular radio sources, termed “STROMERSs” (STRange and Odd Morphology Extragalactic Radio Sources).ingThe irregular radio sources with very anomalous morphologies that make them exceptionally different from all the known classes and subclasses of irregular radio sources are detected as STROMERSs. A thorough search for this class of sources from the Very Large Array (VLA) Faint Images of the Radio Sky at Twenty-Centimeters (FIRST) gave a total of nine such candidates. We checked the corresponding morphology of the identified sources in other frequency surveys. We found a detectable radio emission for all of the nine sources in the NRAO VLA Sky Survey (NVSS) at 1.4 GHz and in the TIFR GMRT Sky Survey (TGSS) at 150 MHz, while the same was found for only three sources in the Westerbork Northern Sky Survey (WENSS) at 625 MHz. However, the strange morphology was not found in all of those other survey images. We also characterized the sources with their corresponding physical parameters like optical counterpart, size, spectral index, and radio luminosity. ingThe estimated spectral values of the sources indicated that the STROMERSs were most likely radio galaxies. The presence of any nearby galaxy clusters for the STROMERSs was also checked. Full article
(This article belongs to the Special Issue New Insights into High-Energy Astrophysics, Galaxies, and Cosmology—Celebrating the 10th Anniversary of the Re-establishment of the Department of Astronomy at Xiamen University (2012–2022))
►▼ Show Figures

Figure 1

Review

Jump to: Research

31 pages, 1808 KiB  
Review
X-Ray Views of Galactic Accreting Pulsars in High-Mass X-Ray Binaries
by Shan-Shan Weng and Long Ji
Universe 2024, 10(12), 453; https://doi.org/10.3390/universe10120453 - 10 Dec 2024
Viewed by 320
Abstract
Accreting X-ray pulsars, located in X-ray binaries, are neutron stars with magnetic fields as strong as B∼1012–13 G. This review offers a concise overview of the accretion and radiation processes of X-ray pulsars and summarizes their rich observational [...] Read more.
Accreting X-ray pulsars, located in X-ray binaries, are neutron stars with magnetic fields as strong as B∼1012–13 G. This review offers a concise overview of the accretion and radiation processes of X-ray pulsars and summarizes their rich observational features, particularly focusing on complex and variable temporal phenomena, spectral properties, and evolution, the new window for X-ray polarimetry and multi-wavelength advances. We also briefly discuss other related systems, i.e., gamma-ray binaries and pulsating ultraluminous X-ray sources. Full article
(This article belongs to the Special Issue New Insights into High-Energy Astrophysics, Galaxies, and Cosmology—Celebrating the 10th Anniversary of the Re-establishment of the Department of Astronomy at Xiamen University (2012–2022))
►▼ Show Figures

Figure 1

18 pages, 1635 KiB  
Review
Jet Precession in Gamma-Ray Bursts
by Bao-Quan Huang and Tong Liu
Universe 2024, 10(12), 438; https://doi.org/10.3390/universe10120438 - 27 Nov 2024
Viewed by 419
Abstract
Jet precession is thought to be a ubiquitous phenomenon in astronomical events of various scales, including gamma-ray bursts (GRBs). If GRB jets undergo precession, periodic features might be introduced into their light curves. Detecting these periodic signals is therefore crucial for confirming the [...] Read more.
Jet precession is thought to be a ubiquitous phenomenon in astronomical events of various scales, including gamma-ray bursts (GRBs). If GRB jets undergo precession, periodic features might be introduced into their light curves. Detecting these periodic signals is therefore crucial for confirming the properties of GRBs’ central engines. However, periodic signals are always missing from observed GRB light curves. Against this backdrop, the broader effects of jet precession on GRBs have been widely studied. In this review, we summarize recent research progress on jet precession in GRBs. The main content focuses on four aspects of the effects of jet precession on GRBs: light curves, jet structures, polarization, and gravitational waves. Full article
(This article belongs to the Special Issue New Insights into High-Energy Astrophysics, Galaxies, and Cosmology—Celebrating the 10th Anniversary of the Re-establishment of the Department of Astronomy at Xiamen University (2012–2022))
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-5
Back to TopTop