Sökning: "Hills mechanism"

Hittade 4 uppsatser innehållade orden Hills mechanism.

  1. 1. Hyper-velocity stars from globular clusters hosting intermediate-mass black holes

    Kandidat-uppsats, Lunds universitet/Astrofysik; Lunds universitet/Fysiska institutionen

    Författare :Matilda Skantz; [2023]
    Nyckelord :Hypervelocity stars; run-away stars; stellar binary; intermediate mass black hole; globular cluster; Hills mechanism; Physics and Astronomy;

    Sammanfattning : In 1988 Hills proposed that stars can gain velocities above 500 km s−1 if they are in a stellar binary which gets disrupted by a super massive black hole (SMBH). One of the stars would get trapped in an elliptical orbit around the SMBH while the other gets ejected and obtains a relatively high velocity. LÄS MER

  3. 2. Making Hypervelocity Stars

    Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :Frans Forsberg; [2020]
    Nyckelord :Stellar Dynamics; Binary Stars; Galactic Centre; Binary Relaxation; Physics and Astronomy;

    Sammanfattning : In this thesis, I investigate if the binaries that are being tidally disrupted by means of the Hills mechanism, producing hypervelocity stars, could have been transported to the galactic centre by two-body scattering. To survive a scattering event, the binary must be hard, meaning that the binding energy of the binary is higher than the kinetic energy of the collider. LÄS MER

  4. 3. Rohingya Refugee and Humanitarian Crisis: Synergies within Bangladesh Government and Humanitarian community (Case study: WASH for Rohingya Refugees)

    Master-uppsats, Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Författare :MD Mostafizur Rahman; [2019]
    Nyckelord :Key words: Rohingya Refugee; Humanitarian Crisis; WASH; Synergies; Humanitarian Community.; Technology and Engineering;

    Sammanfattning : Humanitarian Crisis is an alarming problem throughout the world. Bangladesh also is undergoing Rohingya refugee crisis with grave severity and challenges. Over 1 million Rohingya people have been settled over the top of hills, living without inadequate WASH facilities. LÄS MER

  5. 4. To care about the environment : Technologies of government in forest conservation - Khasi Hills, India

    Master-uppsats, Stockholms universitet/Kulturgeografiska institutionen

    Författare :Erik Andervad; [2014]
    Nyckelord :political ecology; environmental subjectivities; governmentality; forest conservation; community management; REDD ; India;

    Sammanfattning : Involvement of communities in forest conservation and other forms of environmental governance isproliferating. Reduced emissions from deforestation and degradation (REDD+) is one mechanism,designed to reduce emissions of greenhouse gases by reversing deforestation trends in low-incomecountries. LÄS MER