On the Flare Activity of the H${}_{2}$O Maser in DR21OH

IF 1.1 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Astronomy Letters-A Journal of Astronomy and Space Astrophysics Pub Date : 2024-05-13 DOI:10.1134/S1063773724600140

A. V. Lapinov, A. M. Tolmachev, A. K. Kiselev, N. I. Lapin, S. A. Lapinova, I. A. Startseva, A. S. Loginova

引用次数: 0

Abstract

An H${}_{2}$O maser flare detected in July 2023 in the star-forming region DR21OH when monitoring the continuum emission in DR21 with PRAO RT22 is reported. These observations were part of a program to study the characteristics of the antenna and the atmospheric absorption at a wavelength of 1.35 cm. Subsequent access to archival data and new measurements have shown that the detected flare in 2023 was not the only one in the source, and DR21OH is highly variable in the H${}_{2}$O line at 22 GHz with a rather unpredictable character. Based on continuum measurements in DR21, we have estimated the effective area of RT22.

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关于 DR21OH 中 H ${}_{2}$ O Maser 的耀斑活动

摘要报告了2023年7月用PRAO RT22监测DR21的连续发射时在恒星形成区DR21OH探测到的一个H${}_{2}$O maser耀斑。这些观测是研究波长为 1.35 厘米的天线特性和大气吸收的计划的一部分。随后对档案数据的访问和新的测量结果表明，2023年探测到的耀斑并不是该源中唯一的耀斑，DR21OH在22 GHz的H${}_{2}$O线变化很大，具有相当难以预测的特性。根据对 DR21 的连续测量，我们估算出了 RT22 的有效面积。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Astronomy Letters-A Journal of Astronomy and Space Astrophysics 地学天文-天文与天体物理

CiteScore

1.70

自引率

22.20%

发文量

审稿时长

6-12 weeks

期刊介绍： Astronomy Letters is an international peer reviewed journal that publishes the results of original research on all aspects of modern astronomy and astrophysics including high energy astrophysics, cosmology, space astronomy, theoretical astrophysics, radio astronomy, extragalactic astronomy, stellar astronomy, and investigation of the Solar system.

On the Flare Activity of the H\({}_{2}\)O Maser in DR21OH

Abstract