Zobrazeno 1 - 10
of 450
pro vyhledávání: '"radiative processes"'
Autor:
Soumya Gupta, Sunder Sahayanathan
Publikováno v:
The Astrophysical Journal Letters, Vol 970, Iss 1, p L12 (2024)
The spectral properties of a composite thermal emission arising from a relativistic expanding fireball can be remarkably different from the Planck function. We perform a detailed study of such a system to explore the features of the prompt emission s
Externí odkaz:
https://doaj.org/article/c7d2e1b555e14966966e907ba684865b
Autor:
Rohta Takahashi, Masayuki Umemura, Ken Ohsuga, Yuta Asahina, Rintaro Takeda, Mikiya M. Takahashi, Norita Kawanaka, Kohkichi Konno, Tomoaki Nagasawa
Publikováno v:
The Astrophysical Journal Letters, Vol 967, Iss 1, p L10 (2024)
We have discovered analytical expressions for the probability density function (PDF) of photons that are multiply scattered in relativistic flows, under the assumption of isotropic and inelastic scattering. These expressions characterize the collecti
Externí odkaz:
https://doaj.org/article/c6ce85923d1b43a1848bc58235b5980d
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 22, Pp n/a-n/a (2023)
Abstract The aerosol shortwave, direct radiative effects of smoke plumes from Chilean wildfires in 2017 and 2023 were derived from satellite observations in both cloud‐free and cloud scenes. At the top of the atmosphere, the aerosol DRE changes sig
Externí odkaz:
https://doaj.org/article/b8e10083c27c4757a658f07b853481de
Autor:
Shu-Yu Lin, Sheng-Lung Chou, Tzu-Ping Huang, Meng-Yeh Lin, Hui-Fen Chen, Peter J. Sarre, Chien-Ming Tseng, Yu-Jong Wu
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 2, p 230 (2024)
Blue luminescence (BL) has been observed in various astrophysical environments, such as the inner region of the Red Rectangle Nebula. It has been previously linked to small polycyclic aromatic hydrocarbons. In this study, we explore the potential of
Externí odkaz:
https://doaj.org/article/3a387fec965440928f3301e1b9a2dee0
Autor:
Oluwashina K. Adegoke, Javier A. García, Riley M. T. Connors, Yuanze Ding, Guglielmo Mastroserio, James F. Steiner, Adam Ingram, Fiona A. Harrison, John A. Tomsick, Erin Kara, Missagh Mehdipour, Keigo Fukumura, Daniel Stern, Santiago Ubach, Matteo Lucchini
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 1, p 26 (2024)
MAXI J1803-298 is a transient black hole candidate discovered in 2021 May during an outburst that lasted several months. Multiple X-ray observations reveal recurring “dipping” intervals in several of its light curves, particularly during the hard
Externí odkaz:
https://doaj.org/article/3c6e2d7943214ab0a144d8d7440a3aa1
Autor:
Andrei M. Beloborodov
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 2, p 223 (2024)
We investigate how a fast radio burst (FRB) emitted near a magnetar would propagate through its surrounding dipole magnetosphere at radii r = 10 ^7 –10 ^9 cm. First, we show that a GHz burst emitted in the O-mode with luminosity L ≫ 10 ^40 erg s
Externí odkaz:
https://doaj.org/article/4936548f75aa411ebd8cb9e5a148e4e5
Autor:
Marc Klinger, Annika Rudolph, Xavier Rodrigues, Chengchao Yuan, Gaëtan Fichet de Clairfontaine, Anatoli Fedynitch, Walter Winter, Martin Pohl, Shan Gao
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 275, Iss 1, p 4 (2024)
We present the Astrophysical Multimessenger Modeling ( AM ^3 ) software. AM ^3 is a documented open-source software (source code at https://gitlab.desy.de/am3/am3 ; user guide and documentation at https://am3.readthedocs.io/en/latest/ ) that efficien
Externí odkaz:
https://doaj.org/article/bdee28ada0b54716bfd795ca0f541b34
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 162 (2024)
AT 2022cmc is a recently documented tidal disruption event that exhibits a luminous jet, accompanied by fast-declining X-ray and long-lasting radio and millimeter emission. Motivated by the distinct spectral and temporal signatures between the X-ray
Externí odkaz:
https://doaj.org/article/b9cee90c43ee429998e14a16a4e3f0fd
Autor:
Andrea Gokus, Markus Böttcher, Manel Errando, Michael Kreter, Jonas Heßdörfer, Florian Eppel, Matthias Kadler, Paul S. Smith, Petra Benke, Leonid I. Gurvits, Alex Kraus, Mikhail Lisakov, Felicia McBride, Eduardo Ros, Florian Rösch, Jörn Wilms
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 1, p 38 (2024)
Blazars can be detected from very large distances due to their high luminosity. However, the detection of γ -ray emission of blazars beyond z = 3 has only been confirmed for a small number of sources. Such observations probe the growth of supermassi
Externí odkaz:
https://doaj.org/article/116e7931e0024f36b75935839ce31d26
Autor:
Shunshun Cao, Jinchen Jiang, Jaroslaw Dyks, Longfei Hao, Kejia Lee, Zhixuan Li, Jiguang Lu, Zhichen Pan, Weiyang Wang, Zhengli Wang, Jiangwei Xu, Heng Xu, Renxin Xu
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 1, p 56 (2024)
As one of the paradigm examples to probe into pulsar magnetospheric dynamics, PSR B0943+10 (J0946+0951) manifests representatively, showing a mode switch, orthogonal polarization, and subpulse drifting, frequently studied below 600 MHz. Here, both in
Externí odkaz:
https://doaj.org/article/7bcc9d7246e746bfb98b88dd64bdd01f