Results 41 to 50 of about 46,879 (68)

FAST H i 21 cm Study of Blueberry Galaxies

The Astrophysical Journal Letters
Green Peas (GPs) and blueberry galaxies (BBs) are thought to be local analogs ( z < 0.1) of high redshift Ly α emitters. H i study of these can help us understand the star formation in the primordial Universe.
Yogesh Chandola, Chao-Wei Tsai, D. J. Saikia, Guodong Li, Di Li, Yin-Zhe Ma   +5 more
doaj   +1 more source

Simulations of the Collision between a Debris Stream and an Outer Dusty Torus: A Possible Channel for Forming a Fast-rise and Long-delay Radio Outburst in Tidal Disruption Events

The Astrophysical Journal
A geometrically thick dusty torus structure is believed to exist in the nuclear regions of galaxies (especially in active galactic nuclei). The debris stream from a tidal disruption event (TDE) will possibly collide with the dusty torus and produce a ...
Xiangli Lei, Qingwen Wu, Hui Li, Ya-Ping Li, Wei-Hua Lei, Xiao Fan, Jiancheng Wu, Mengye Wang, Weibo Yang   +8 more
doaj   +1 more source

Temporal Evolution of a Network Jet’s Physical Properties Inferred from FISS/GST and IRIS Observations

The Astrophysical Journal
Small-scale jets, such as chromospheric and transition region (TR) network jets, are of great interest regarding coronal heating and solar wind acceleration. Spectroscopic analysis based on multiple spectral lines with different formation temperatures is
Eun-Kyung Lim, Jongchul Chae, Kyuhyoun Cho, Vasyl Yurchyshyn, Heesu Yang, Kyung-Suk Cho, Hannah Kwak, Donguk Song, Maria S. Madjarska   +8 more
doaj   +1 more source

Multiwavelength Long-term Studies of Radio Galaxy NGC 1275

The Astrophysical Journal
It is widely considered that the processes of an interaction between the energy and radiation, which are generated in the active galactic nuclei (AGN) by accretion onto their central massive black hole with the gas in the host galaxy, take a great part ...
Vera G. Sinitsyna, Vera Y. Sinitsyna
doaj   +1 more source

A Quasar-anchored Protocluster at z = 6.6 in the ASPIRE Survey. I. Properties of [O iii] Emitters in a 10 Mpc Overdensity Structure

The Astrophysical Journal
A SPectroscopic survey of bIased halos in the Reionization Era is a quasar legacy survey primarily using JWST to target a sample of 25 z  > 6 quasars with NIRCam slitless spectroscopy and imaging. The first study in this series found evidence of a strong
Jaclyn B. Champagne, Feige Wang, Haowen Zhang, Jinyi Yang, Xiaohui Fan, Joseph F. Hennawi, Fengwu Sun, Eduardo Bañados, Sarah E. I. Bosman, Tiago Costa, Anna-Christina Eilers, Ryan Endsley, Xiangyu Jin, Hyunsung D. Jun, Mingyu Li, Xiaojing Lin, Weizhe Liu, Federica Loiacono, Alessandro Lupi, Chiara Mazzucchelli, Maria Pudoka, Klaudia Protušovà, Sofía Rojas-Ruiz, Wei Leong Tee, Maxime Trebitsch, Bram P. Venemans, Ming-Yang Zhuang, Siwei Zou   +27 more
doaj   +1 more source

A Quasar-anchored Protocluster at z = 6.6 in the ASPIRE Survey. II. An Environmental Analysis of Galaxy Properties in an Overdense Structure

The Astrophysical Journal
We present in this paper (Paper II of the series) a 35 arcmin ^2 JWST/NIRCam imaging and wide-field slitless spectroscopy mosaic centered on J0305–3150, a luminous quasar at z = 6.61. The F356W grism data reveal 124 [O iii ]+H β emitters at 5.3 
Jaclyn B. Champagne, Feige Wang, Jinyi Yang, Xiaohui Fan, Joseph F. Hennawi, Fengwu Sun, Eduardo Bañados, Sarah E. I. Bosman, Tiago Costa, Melanie Habouzit, Xiangyu Jin, Hyunsung D. Jun, Mingyu Li, Weizhe Liu, Federica Loiacono, Alessandro Lupi, Chiara Mazzucchelli, Maria Pudoka, Sofía Rojas-Ruiz, Wei Leong Tee, Maxime Trebitsch, Haowen Zhang, Ming-Yang Zhuang, Siwei Zou   +23 more
doaj   +1 more source

B-fields and Dust in Interstellar Filaments Using Dust Polarization (BALLAD-POL). III. Grain Alignment and Disruption Mechanisms in G34.43+0.24 Using Polarization Observations from JCMT/POL-2

The Astrophysical Journal
Polarization of starlight and thermal dust emission due to aligned non-spherical grains helps us to trace magnetic field ( B -field) morphology in molecular clouds and to study grain alignment mechanisms.
Saikhom Pravash, Archana Soam, Pham Ngoc Diep, Thiem Hoang, Nguyen Bich Ngoc, Le Ngoc Tram   +5 more
doaj   +1 more source

SOFIA Polarization Spectrum of Three Star-forming Clouds

The Astrophysical Journal
The dust emission polarization spectrum—how the polarization percentage changes with wavelength—serves as a probe of dust grain properties in star-forming regions.
Erin G. Cox, Giles Novak, David T. Chuss, Dennis Lee, Marc Berthoud, Kaitlyn Karpovich, Joseph M. Michail, Zhi-Yun Li, Peter C. Ashton   +8 more
doaj   +1 more source

Irregularly Sampled Time Series Interpolation for Detailed Binary Evolution Simulations

The Astrophysical Journal
Modeling of large populations of binary stellar systems is an integral part of many areas of astrophysics, from radio pulsars and supernovae to X-ray binaries, gamma-ray bursts, and gravitational-wave mergers.
Philipp M. Srivastava, Ugur Demir, Aggelos Katsaggelos, Vicky Kalogera, Shamal Lalvani, Elizabeth Teng, Tassos Fragos, Jeff J. Andrews, Simone S. Bavera, Max Briel, Seth Gossage, Konstantinos Kovlakas, Matthias U. Kruckow, Camille Liotine, Kyle A. Rocha, Meng Sun, Zepei Xing, Emmanouil Zapartas   +17 more
doaj   +1 more source

An Upper Limit on the Interstellar Meteoroid Flux at Video Sizes from the Global Meteor Network

The Astrophysical Journal
Material arriving at our solar system from the Galaxy may be detected on Earth in the form of meteors ablating in our atmosphere. Here, we report on a search for interstellar meteors within the highest-quality events in the Global Meteor Network (GMN ...
Paul Wiegert, Vanessa Tran, Cole Gregg, Denis Vida, Peter Brown   +4 more
doaj   +1 more source