塞弗特星系ngc4151的伽马射线发射:研究喷流和日冕活动的作用

IF 2.2 4区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

Publications of the Astronomical Society of Japan Pub Date : 2023-10-30 DOI:10.1093/pasj/psad072

Yoshiyuki Inoue, Dmitry Khangulyan

{"title":"塞弗特星系ngc4151的伽马射线发射:研究喷流和日冕活动的作用","authors":"Yoshiyuki Inoue, Dmitry Khangulyan","doi":"10.1093/pasj/psad072","DOIUrl":null,"url":null,"abstract":"Abstract NGC 4151, a nearby Seyfert galaxy, has recently been reported to emit gamma-rays in the GeV range, posing an intriguing astrophysical mystery. The star formation rate of NGC 4151 is too low to explain the observed GeV flux, but the galaxy is known for its coronal activity in X-ray and jet activity in radio. We propose that either the combination of these two activities or the jet activity alone can account for the gamma-ray spectrum. An energy-dependent variability search will allow one to distinguish between the two scenarios, as the coronal component can only contribute at energies of ≲1 GeV. Our analysis also indicates that it might still be difficult to see coronal neutrinos from the apparently X-ray brightest Seyfert NGC 4151 with current-generation neutrino observatories.","PeriodicalId":20733,"journal":{"name":"Publications of the Astronomical Society of Japan","volume":null,"pages":null},"PeriodicalIF":2.2000,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Gamma-ray emission in the Seyfert galaxy NGC 4151: Investigating the role of jet and coronal activities\",\"authors\":\"Yoshiyuki Inoue, Dmitry Khangulyan\",\"doi\":\"10.1093/pasj/psad072\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract NGC 4151, a nearby Seyfert galaxy, has recently been reported to emit gamma-rays in the GeV range, posing an intriguing astrophysical mystery. The star formation rate of NGC 4151 is too low to explain the observed GeV flux, but the galaxy is known for its coronal activity in X-ray and jet activity in radio. We propose that either the combination of these two activities or the jet activity alone can account for the gamma-ray spectrum. An energy-dependent variability search will allow one to distinguish between the two scenarios, as the coronal component can only contribute at energies of ≲1 GeV. Our analysis also indicates that it might still be difficult to see coronal neutrinos from the apparently X-ray brightest Seyfert NGC 4151 with current-generation neutrino observatories.\",\"PeriodicalId\":20733,\"journal\":{\"name\":\"Publications of the Astronomical Society of Japan\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.2000,\"publicationDate\":\"2023-10-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Publications of the Astronomical Society of Japan\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1093/pasj/psad072\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ASTRONOMY & ASTROPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Publications of the Astronomical Society of Japan","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1093/pasj/psad072","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}

引用次数: 0

摘要

最近有报道称，附近的Seyfert星系NGC 4151发射出GeV范围的伽马射线，这构成了一个有趣的天体物理学谜团。NGC 4151的恒星形成率太低，无法解释观测到的GeV通量，但该星系以其x射线的日冕活动和射电的喷流活动而闻名。我们认为，这两种活动的结合或单独的喷流活动都可以解释伽马射线谱。能量相关的变率搜索将允许人们区分这两种情况，因为日冕分量只能在能量小于1 GeV时起作用。我们的分析还表明，用当前一代的中微子天文台可能仍然很难看到来自x射线最亮的Seyfert NGC 4151的日冕中微子。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Gamma-ray emission in the Seyfert galaxy NGC 4151: Investigating the role of jet and coronal activities

Abstract NGC 4151, a nearby Seyfert galaxy, has recently been reported to emit gamma-rays in the GeV range, posing an intriguing astrophysical mystery. The star formation rate of NGC 4151 is too low to explain the observed GeV flux, but the galaxy is known for its coronal activity in X-ray and jet activity in radio. We propose that either the combination of these two activities or the jet activity alone can account for the gamma-ray spectrum. An energy-dependent variability search will allow one to distinguish between the two scenarios, as the coronal component can only contribute at energies of ≲1 GeV. Our analysis also indicates that it might still be difficult to see coronal neutrinos from the apparently X-ray brightest Seyfert NGC 4151 with current-generation neutrino observatories.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Publications of the Astronomical Society of Japan 地学天文-天文与天体物理

CiteScore

4.10

自引率

13.00%

发文量

审稿时长

4-8 weeks

期刊介绍： Publications of the Astronomical Society of Japan (PASJ) publishes the results of original research in all aspects of astronomy, astrophysics, and fields closely related to them.