Galactic and extragalactic compact objects
银河系和河外致密天体
基本信息
- 批准号:137974-2011
- 负责人:
- 金额:$ 1.6万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Discovery Grants Program - Individual
- 财政年份:2015
- 资助国家:加拿大
- 起止时间:2015-01-01 至 2016-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
We will investigate extremely compact sources such as supernovae (SNe) and the environment of supermassive black holes in the center of galaxies and quasars. We will use the new EVLA and ALMA telescopes and the radio technique of very-long baseline interferometry (VLBI) to reveal details of the physical processes that otherwise would remain hidden. The latter technique, first used in Canada, allows us to zoom into compact radio sources and make images with a resolution 10,000 times better than that with the Hubble Space Telescope. In particular we will probe massive core-collapse SNe of type II and Ib/c, some of the latter related to gamma-ray bursts, the most powerful single events in the universe after the Big Bang. We will make movies of the expanding debris of the aftermath of the explosion. With hydrodynamic simulations we will probe in detail the physical parameters that shape the interaction of the expanding SN shock front with the circumstellar medium left over from the progenitor star. The shock front sweeping up the surrounding clouds of gas is like a time machine that records in a few years, in reverse, the history of the surface activity of the progenitor star thousands of years before it exploded. We will also search for any signs of a pulsar or a black hole as the central stellar corpse left over from the explosion. We will use the expanding shock-front method (ESL) developed by us to determine geometrically the distance to a SN and its host galaxy with a better than 10% uncertainty. SN 1979C in the Virgo cluster of galaxies is a candidate for which such well determined distance could also lead to a new determination of the Hubble constant with an uncertainty that is comparable to that of other methods. Any such new determination is useful since it could help to shed light on such fundamental cosmological questions as the degree of the spatial flatness of the universe, characteristics of the vacuum energy, and dark matter. We will also search for the jet in the nearby spiral M81 and zoom into the cores of quasars with VLBI and probe their dynamics. These studies will shed light on the astrophysics of the environment of a supermassive black hole and help establish a new fundamental celestial reference frame.
我们将研究非常紧凑的源,如超新星(SNe)和星系和类星体中心的超大质量黑洞的环境。我们将使用新的EVLA和阿尔马望远镜以及甚长基线干涉测量(VLBI)的无线电技术来揭示否则将隐藏的物理过程的细节。后一种技术首先在加拿大使用,它使我们能够放大紧凑的射电源,并使图像的分辨率比哈勃太空望远镜好10,000倍。 特别是,我们将探测II型和Ib/c型的大质量核心坍缩SNe,后者中的一些与伽马射线爆发有关,伽马射线爆发是大爆炸后宇宙中最强大的单一事件。我们将拍摄爆炸后不断膨胀的碎片。通过流体动力学模拟,我们将详细探讨扩展SN激波阵面与祖先星星遗留的星周介质相互作用的物理参数。冲击波阵面席卷周围的气体云,就像一台时间机器,在几年内记录下了原始星星爆炸前数千年的表面活动历史。我们还将寻找任何脉冲星或黑洞的迹象,作为爆炸留下的中央恒星尸体。我们将使用我们发展的膨胀激波阵面方法(ESL)来确定SN与其宿主星系的几何距离,其不确定性优于10%。室女座星系团中的SN 1979 C是一个候选者,这样确定的距离也可能导致新的哈勃常数的确定,其不确定性与其他方法相当。任何这样的新测定都是有用的,因为它可以帮助阐明宇宙空间平坦度、真空能量特征和暗物质等基本宇宙学问题。我们还将在附近的螺旋M81中寻找喷流,并使用VLBI放大类星体的核心并探测它们的动力学。这些研究将揭示超大质量黑洞环境的天体物理学,并帮助建立一个新的基本天体参考系。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Bartel, Norbert其他文献
The bright supernova 1996cr in the circinus galaxy imaged with VLBI: shell structure with complex evolution
用VLBI成像的圆环星系中明亮的超新星1996cr:具有复杂演化的壳层结构
- DOI:
10.1093/mnras/stad415 - 发表时间:
2023 - 期刊:
- 影响因子:4.8
- 作者:
Bietenholz, Michael F.;Bartel, Norbert;Bauer, Franz E.;Dwarkadas, Vikram V.;Mtshweni, Leon;Orquera-Rojas, Carlos;Ellingsen, Simon;Horiuchi, Shinji;Tzioumis, Anastasios - 通讯作者:
Tzioumis, Anastasios
SN 2014C: VLBI image shows a shell structure and decelerated expansion
SN 2014C:VLBI图像显示壳结构和减速膨胀
- DOI:
10.1093/mnras/staa4003 - 发表时间:
2021 - 期刊:
- 影响因子:4.8
- 作者:
Bietenholz, Michael F;Bartel, Norbert;Kamble, Atish;Margutti, Raffaella;Matthews, David Jacob;Milisavljevic, Danny - 通讯作者:
Milisavljevic, Danny
Bartel, Norbert的其他文献
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{{ truncateString('Bartel, Norbert', 18)}}的其他基金
Test of gravitational redshift and galactic and extragalactic compact radio sources with the technique of very long baseline interferometry
利用甚长基线干涉技术测试引力红移和河道及河外紧凑型射电源
- 批准号:
RGPIN-2016-05279 - 财政年份:2021
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Test of gravitational redshift and galactic and extragalactic compact radio sources with the technique of very long baseline interferometry
利用甚长基线干涉技术测试引力红移和河道及河外紧凑型射电源
- 批准号:
RGPIN-2016-05279 - 财政年份:2020
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Test of gravitational redshift and galactic and extragalactic compact radio sources with the technique of very long baseline interferometry
利用甚长基线干涉技术测试引力红移和河道及河外紧凑型射电源
- 批准号:
RGPIN-2016-05279 - 财政年份:2019
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Test of gravitational redshift and galactic and extragalactic compact radio sources with the technique of very long baseline interferometry
利用甚长基线干涉技术测试引力红移和河道及河外紧凑型射电源
- 批准号:
RGPIN-2016-05279 - 财政年份:2018
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Test of gravitational redshift and galactic and extragalactic compact radio sources with the technique of very long baseline interferometry
利用甚长基线干涉技术测试引力红移和河道及河外紧凑型射电源
- 批准号:
RGPIN-2016-05279 - 财政年份:2017
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Test of gravitational redshift and galactic and extragalactic compact radio sources with the technique of very long baseline interferometry
利用甚长基线干涉技术测试引力红移和河道及河外紧凑型射电源
- 批准号:
RGPIN-2016-05279 - 财政年份:2016
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Galactic and extragalactic compact objects
银河系和河外致密天体
- 批准号:
137974-2011 - 财政年份:2014
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Galactic and extragalactic compact objects
银河系和河外致密天体
- 批准号:
137974-2011 - 财政年份:2013
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Galactic and extragalactic compact objects
银河系和河外致密天体
- 批准号:
137974-2011 - 财政年份:2012
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Galactic and extragalactic compact objects
银河系和河外致密天体
- 批准号:
137974-2011 - 财政年份:2011
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
相似海外基金
Test of gravitational redshift and galactic and extragalactic compact radio sources with the technique of very long baseline interferometry
利用甚长基线干涉技术测试引力红移和河道及河外紧凑型射电源
- 批准号:
RGPIN-2016-05279 - 财政年份:2021
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Test of gravitational redshift and galactic and extragalactic compact radio sources with the technique of very long baseline interferometry
利用甚长基线干涉技术测试引力红移和河道及河外紧凑型射电源
- 批准号:
RGPIN-2016-05279 - 财政年份:2020
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Test of gravitational redshift and galactic and extragalactic compact radio sources with the technique of very long baseline interferometry
利用甚长基线干涉技术测试引力红移和河道及河外紧凑型射电源
- 批准号:
RGPIN-2016-05279 - 财政年份:2019
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Test of gravitational redshift and galactic and extragalactic compact radio sources with the technique of very long baseline interferometry
利用甚长基线干涉技术测试引力红移和河道及河外紧凑型射电源
- 批准号:
RGPIN-2016-05279 - 财政年份:2018
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Test of gravitational redshift and galactic and extragalactic compact radio sources with the technique of very long baseline interferometry
利用甚长基线干涉技术测试引力红移和河道及河外紧凑型射电源
- 批准号:
RGPIN-2016-05279 - 财政年份:2017
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Test of gravitational redshift and galactic and extragalactic compact radio sources with the technique of very long baseline interferometry
利用甚长基线干涉技术测试引力红移和河道及河外紧凑型射电源
- 批准号:
RGPIN-2016-05279 - 财政年份:2016
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Galactic and extragalactic compact objects
银河系和河外致密天体
- 批准号:
137974-2011 - 财政年份:2014
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Galactic and extragalactic compact objects
银河系和河外致密天体
- 批准号:
137974-2011 - 财政年份:2013
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Galactic and extragalactic compact objects
银河系和河外致密天体
- 批准号:
137974-2011 - 财政年份:2012
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Galactic and extragalactic compact objects
银河系和河外致密天体
- 批准号:
137974-2011 - 财政年份:2011
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual