本科生研究计划

The 本科生研究计划 offers undergraduate students an invaluable opportunity to take part in cutting-edge research being undertaken in research centres at the University, such as the Centre for Astrophysics Research (CAR), which is a leading Astrophysics department in Europe. These projects are designed to give undergraduate students a taste of what working in frontier research is like and often contribute to journal publications. We welcome interest both from undergraduates who are current students at Hertfordshire and those who are not.

Students who are interested in working on a project should email the project supervisor as early as possible and copy in the research tutor (Sugata Kaviraj; s.kaviraj@herts.ac.uk). In their email, students should include a short statement (one or two paragraphs) explaining why they are interested in the project and attach a short CV. They are welcome to express interest in multiple projects (although they will typically work on one project, usually over the summer period). Supervisors will then set up an informal chat to discuss details of the projects with prospective students, after which students will be expected to make project selections. Some limited funding may be available and students will be advised of the details after they apply.

揭开隐藏宇宙:使用模拟和观察调查研究“低表面亮度”星系

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In this project the student will use data from the new Hyper Suprime Cam (HSC) survey to study the properties of tens of thousands of galaxies in the low surface brightness regime, over at least the last 50% of the lifetime of the Universe. These observational results will then be compared to predictions from two state-of-the-art cosmological simulations, Horizon-AGN and New Horizon. The aim will be to (1) dissect the observed properties of LSB galaxies and (2) use the simulations to understand how these galaxies are likely to have formed, and their relationship to brighter galaxies on which our current understanding of galaxy evolution is predicated. This will be one of the first comprehensive investigations of the LSB Universe and the results of this project will form part of a journal article.

适合于大学本科学生在第二年及以上 

日期:6-8周(柔性) 

主管详细信息:

菅卡维拉杰, s.kaviraj@herts.ac.uk, Room 2E66

Ryan Jackson, r.jackson9@herts.ac.uk, Room 2E68

揭露与明智附近隐蔽的褐矮星

太阳最近的邻居的名单已经成长了几千年,具有明亮的邻居发现更久远的时间。半人马座阿尔法AB(G / K型),例如在托勒密的2世纪星表上市,用微弱的巴纳德星和比邻星冷却器100年前发现的〜。最近,作为新的望远镜提供更高的灵敏度和更长的波长范围,褐矮的发现例如跳入图表卢迈16,睿智0855-0714,和印第安座εAB。附近的系统是恒星/亚恒星物理和太阳系外行星系统的研究,重要的天文目标。甚至还有一种理论认为太阳可以在很宽的轨道(克星)拥有前所未见的褐矮星的伴侣。预期仍然是当地的明星和褐矮星的一个显著的人口目前都不得而知。明智是基于空间的中红外望远镜在2010年推出的,已经被成像提供多个覆盖范围(时期),提供给最冷附近褐矮最佳灵敏度的6按月天空。但是,聪明的具有空间分辨率较低,来源是跨越几角秒。这导致地区造成严重源拥挤,如银道面和中心,朝向附近的褐矮星可能藏匿未被发现。明智的最新春季发布的数据将提供历元的人数最多的是,在这个项目中,您将使用这种多时期的数据去寻找在拥挤的天空附近的高自行褐矮星。你将利用范围的方法,以在多历元数据结合起来,并在视觉上隔离拥挤背景移动褐矮的签名。你也将测试在已知对象的方法,以评估在不同情况下的有效性。新的发现将是令人兴奋的对象,并使用该集团的大型望远镜项目进行快速跟踪观察。

适合本科生在任何一年

日期:4-12周(柔性)

主管细节:大卫引脚区, d.j.pinfield@herts.ac.uk, room 1e66

从没有超大质量黑洞的反馈影响矮星系的演化?

来自超大质量黑洞,驻留在星系的中心,充满活力的回应被认为是强烈地影响着他们的主人在宇宙时间的演化例如通过调节恒星质量的生长和诱导有时显著结构变化。黑洞的作用只有在大规模的星系了深入研究,主要是因为这些都是在过去的观察调查很容易检测的对象。然而,侏儒(即低质量)的星系比他们的同行大规模更大量和黑洞在这些系统中的作用是现代天体物理学的关键悬而未决的问题之一。目前尚不清楚是否在大量小矮人实际存在超大质量黑洞,如果他们这样做,他们的角色是什么(如果有的话)在影响这些系统的演变。

In this project, the student will use the state-of-the-art New Horizon simulation, to estimate the fraction of dwarf galaxies that host black holes, and explore the impact of these black holes on the evolution of their hosts. They will then compare these predictions to real data from the Hyper Suprime Cam survey to develop a picture of the role of black holes in the dwarf-galaxy regime. The results of this project will form part of a journal article.

适合于大学本科学生在第二年及以上 

日期:6-8周(柔性) 

主管详细信息:

菅卡维拉杰, s.kaviraj@herts.ac.uk , Room 2E66

Ryan Jackson, r.jackson9@herts.ac.uk, Room 2E68

与暗物质异常分数星系

最近的观测工作,揭示了星系的出现有很少或没有暗物质(存在缺乏暗物质星系) , though the findings, and their implications, are still hotly debated. The aim of this project will be to use the state-of-the-art New Horizon cosmological simulation to find and analyse any galaxies that have either anomalously high or low dark matter fractions. The student will then identify what physical processes have caused these galaxies to have such anomalous dark matter fractions and whether there are any common features in their evolutionary history that create them. The results of this analysis can then be compared to observations to identify if there is any overlap, and if the findings can be reconciled with the simulation.

适合于大学本科学生在第二年及以上 

日期:6-8周(柔性) 

主管详细信息:

Ryan Jackson, r.jackson9@herts.ac.uk, Room 2E68

菅卡维拉杰, s.kaviraj@herts.ac.uk , Room 2E66

使用盖亚宽双星系外行星和褐矮星的研究

盖亚是欧空局的基石任务来测量距离和〜一十亿颗恒星的运动,并彻底改变天文学的许多领域。第二盖亚数据版本现已可用,并表示最大的进步是盖亚将提供。的赫特福德郡低质量组使用盖亚寻求形成用于大量的研究的基础宽二元系统:(ⅰ)超级酷的侏儒同伴盖亚分已经它们的性质由初级校准,成为揭示超级酷的气氛“基准对象”物理。 (二)以接近全盖亚二进制酷对象很可能已经从轨道弹出二进制组件之一左右,而这种物体的识别将揭示褐矮星和先前隐藏的轨道同伴巨行星。 (ⅲ)宽双星具有共同的年龄和组合物中,与恒星活动取决于年龄。但在靠近轨道的系外行星可能与潮汐其主机交互星(增加他们的活动),他们也可以共生到他们的主星的大气层改变组成。广双星,其成分有不同的组成和活动水平从而可以显示“冒烟的枪”为系外行星的互动和增值。在这个项目中,您将开发确定最佳的光谱类型和分类基于所有可用数据盖亚星的工具。那么你将构建宽的二进制系统的样品,即对盖亚恒星〜弧分的分离和一个共享的距离和适当的运动的。如时间允许,你将有机会学习在团体项目之一的背景下,这些二进制文件的一个子集。

适合本科生在任何一年

日期:4-12周(柔性)

主管细节:大卫引脚区, d.j.pinfield@herts.ac.uk, room 1e66

磷光

Phosphorescence is the emission of light from a material that has been excited by some energising process (often the absorption of UV light), where the emission occurs over timescales that are longer than the short (nanosecond) decay times of fluorescence. 磷光 may last for seconds, minutes or hours, depending on the material studied. The project involves studying the phosphorescent decay of novel phosphorescent materials in the PAM optics labs, and seeking to understand the origin of the phosphorescence through literature studies and the design of suitable experiments.

适合于大学本科学生在第二年及以上的,谁感兴趣的实验室物理,半导体,光学和原子过程。

日期:4-12周(灵活),直到最新的八月中旬

主管细节:肖恩·赖安, s.g.ryan@herts.ac.uk, room 1E52

在组织的光散射

Optical medical imaging techniques rely on the detection of light that is both absorbed and scattered by the material through which it passes. The project involves studying the way light is scattered in tissue, to explore opportunities to infer the properties of the medium based on the emergent signal. The work will be undertaken in the PAM optics labs.

适合于大学本科学生在第二年及以上的,谁感兴趣的实验室物理学和光学。

日期:4-12周(灵活),直到最新的八月中旬

主管细节:肖恩·赖安, s.g.ryan@herts.ac.uk, room 1E52