Essays about: "Anders Ahlström"

Found 2 essays containing the words Anders Ahlström.

  1. 1. Galaxies as Clocks and the Universal Expansion

    University essay from KTH/Fysik

    Author : Anders Ahlström Kjerrgren; [2021]
    Keywords : cosmology; cosmic chronometers; universal expansion; Hubble parameter; differential ages; galaxy age; relative age; cosmic time; chi-square minimization; monte carlo sampling; gaussian processes; kosmologi; kosmisk kronometer; universums expansion; Hubbleparametern; differentiell ålder; galaxålder; relativ ålder; kosmisk tid; chi-2-minimering; monte carlo-sampling; gaussiska processer;

    Abstract : The Hubble parameter H(z) is a measure of the expansion rate of the universe at redshift z. One method to determine it relies on inferring the slope of the redshift with respect to cosmic time, where galaxy ages can be used as a proxy for the latter. This method is used by Simon et al. READ MORE

  3. 2. Accessibility, poverty and land cover in Hambantota district, Sri Lanka : incorporating local knowledge into a GIS based accessibility model : a minor field study

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Anders Ahlström; [2008]
    Keywords : accessibility; Sri Lanka; Hambantota district; GIS; physical geography; geography; land cover; poverty; Earth and Environmental Sciences;

    Abstract : Tillgänglighet har funnits starkt relaterat till socio-ekonomiska indikatorer och markanvändning i många studier. Termen tillgänglighet har många definitioner. I grunden beskriver termen möjligheterna eller med vilken lätthet man kan nå, förskaffa eller delta i en plats, vara eller en aktivitet beroende på spatial eller social separation. READ MORE