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                    AST4320 - Cosmology and Extragalactic Astronomy
                  
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        <h1>Messages
          
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              <div class="vrtx-result-1 vrtx-resource">
          <div class="vrtx-title">
            <a class="vrtx-title" href="/studier/emner/matnat/astro/AST4320/h23/beskjeder/oral-exam-questions-from-last-year-(2022).html">Oral exam questions from last year (2022)</a>
          </div>

            <div class="published-date">
              <span class="published-date-prefix">
Published              </span>
Dec. 11, 2023 10:07 AM            </div>


            <div class="description introduction">
                <p>I have uploaded the oral exam questions (with solutions) from last year (2022) in the google drive.&nbsp; As you can see, these are mostly concept questions for all the topics we covered during the lectures, and many are already included in the homework assignment already.&nbsp;</p>

<p>I will do the visit to the exam room today around 4 pm to answer possible questions from you.&nbsp;</p>

<p>Good luck!&nbsp;</p>

<p>Sijing&nbsp;</p>

            </div>
        </div>



              <div class="vrtx-result-2 vrtx-resource">
          <div class="vrtx-title">
            <a class="vrtx-title" href="/studier/emner/matnat/astro/AST4320/h23/beskjeder/group-session---zoom-link.html">Group session - Zoom link</a>
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            <div class="published-date">
              <span class="published-date-prefix">
Published              </span>
Nov. 7, 2023 2:03 PM            </div>


            <div class="description introduction">
                <p>Group session tomorrow and Nov 22 will be on zoom. Zoom link: https://uio.zoom.us/j/65028743730?pwd=eXZrNlZGdWp5SkdpRDcrNWEwYjFEdz09</p>

            </div>
        </div>



              <div class="vrtx-result-3 vrtx-resource">
          <div class="vrtx-title">
            <a class="vrtx-title" href="/studier/emner/matnat/astro/AST4320/h23/beskjeder/presentation-schedule-.html">Presentation schedule </a>
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            <div class="published-date">
              <span class="published-date-prefix">
Published              </span>
Nov. 6, 2023 11:55 AM            </div>


            <div class="description introduction">
                <p>The presentation schedule for next week can be seen<a href="https://www.dropbox.com/scl/fi/1ybwiegt6m2q6hl9isjet/AST4320-Presentation-Schedule-2023.pdf?rlkey=rmgxb3s3v367ofy5u3maapgfn&amp;dl=0"> here</a>. Remember that each of you have 20 min in total, 15 min presentation plus 5 min questions. Please also attend your classmates presentations and ask questions. Some of the material of your presentations can appear in the final exam as "Bonus questions". In addition, after your presentation, please send me and Robert your slides.&nbsp;</p>

<p>Good luck!&nbsp;</p>

<p>Sijing&nbsp;</p>

            </div>
        </div>



              <div class="vrtx-result-4 vrtx-resource">
          <div class="vrtx-title">
            <a class="vrtx-title" href="/studier/emner/matnat/astro/AST4320/h23/beskjeder/lecture-schedule-for-the-rest-of-the-semester-.html">Lecture schedule for the rest of the semester </a>
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            <div class="published-date">
              <span class="published-date-prefix">
Published              </span>
Nov. 3, 2023 3:54 PM            </div>


            <div class="description introduction">
                <p>We have some small adjustments on the lecture schedule for the rest of the semester. Here is the update:&nbsp;</p>

<p>November 7, 10 (Lecture 19 and 20)&nbsp;</p>

<p>November 14 (lecture 21)</p>

<p>November 15, 17 (your presentations)</p>

<p>Lecture on November 21 is cancelled.&nbsp;</p>

<p>November 24 (lecture 22)&nbsp;</p>

<p>November 28 (lecture 23)&nbsp;</p>

<p>The group session schedule remains the same (except Nov. 15).&nbsp;</p>

<p>Sijing&nbsp;&nbsp;</p>

            </div>
        </div>



              <div class="vrtx-result-5 vrtx-resource">
          <div class="vrtx-title">
            <a class="vrtx-title" href="/studier/emner/matnat/astro/AST4320/h23/beskjeder/group-session-tomorrow-is-cancelled-.html">Group session tomorrow is cancelled </a>
          </div>

            <div class="published-date">
              <span class="published-date-prefix">
Published              </span>
Oct. 31, 2023 6:15 PM            </div>


            <div class="description introduction">
                <p>There will be no group session tomorrow due to travel. If you have any questions, please email me and I will answer as quickly as I can.</p>

<p>Robert</p>

            </div>
        </div>



              <div class="vrtx-result-6 vrtx-resource">
          <div class="vrtx-title">
            <a class="vrtx-title" href="/studier/emner/matnat/astro/AST4320/h23/beskjeder/lecture-on-axion-dark-matter-this-friday-october-27-.html">Lecture on Axion dark matter this Friday, October 27 </a>
          </div>

            <div class="published-date">
              <span class="published-date-prefix">
Published              </span>
Oct. 25, 2023 10:49 PM            </div>


            <div class="description introduction">
                <p>This Friday (Oct. 27) we will have a guest lecture from Tim Zimmermann, PhD fellow working on axion dark matter modeling and structure formation. His lecture title is "Ultralight Axion Dark Matter: Phenomena beyond Gravitational Clustering".&nbsp;Tim will give you a much more up-to-date account on the exciting advancement on axion dark matter.&nbsp;&nbsp;If you are interested in dark matter and the research frontier on this topic, this lecture is not to be missed!&nbsp;</p>

<p>The lecture will be starting from 12:15 as usual, and last about 45 min - 1 hour.&nbsp;</p>

<p>&nbsp;</p>

            </div>
        </div>



              <div class="vrtx-result-7 vrtx-resource">
          <div class="vrtx-title">
            <a class="vrtx-title" href="/studier/emner/matnat/astro/AST4320/h23/beskjeder/in-class-oral-presentation.html">In class oral presentation</a>
          </div>

            <div class="published-date">
              <span class="published-date-prefix">
Published              </span>
Oct. 5, 2023 9:38 AM            </div>


            <div class="description introduction">
                <p>The oral presentation is scheduled on November 14, 15 and 17, during the usual lecture and group session times. Some suggestions of topics is uploaded in the google drive, but you can also downloaded <a href="https://www.dropbox.com/scl/fi/tl1h11pvhlcc5g70wdrtg/Presentation_ideas.pdf?rlkey=7zkobon14dm5k7pg1jr72dlnk&amp;dl=0">here.&nbsp;</a>&nbsp;The evaluation criteria is also in the same folder, and can be seen <a href="https://www.dropbox.com/s/gqn3vb7b1b9f1hw/evaluation_criteria.pdf?dl=0">here.</a>&nbsp;</p>

<p>Please let me know immediately if the date/time doesn't work for you. Thanks!&nbsp;</p>

<p>Sijing&nbsp;</p>

<p>&nbsp;</p>

            </div>
        </div>



              <div class="vrtx-result-8 vrtx-resource">
          <div class="vrtx-title">
            <a class="vrtx-title" href="/studier/emner/matnat/astro/AST4320/h23/beskjeder/swap-of-lecture-and-group-session-this-week-.html">Swap of lecture and group session this week </a>
          </div>

            <div class="published-date">
              <span class="published-date-prefix">
Published              </span>
Oct. 2, 2023 12:33 PM            </div>


            <div class="description introduction">
                <p>This week we will have the group session on Tuesday (tomorrow) 12:15 to 14:00, and the lecture on Wednesday 14:15 to 16:00. The lecture on Friday remains unchanged. My apologies for the late notice. This is due to a meeting that I must attend on Tuesday which will overlap with the lecture time.&nbsp;&nbsp;</p>

<p>Sijing&nbsp;</p>

            </div>
        </div>



              <div class="vrtx-result-9 vrtx-resource">
          <div class="vrtx-title">
            <a class="vrtx-title" href="/studier/emner/matnat/astro/AST4320/h23/beskjeder/assignment-.html">Assignment </a>
          </div>

            <div class="published-date">
              <span class="published-date-prefix">
Published              </span>
Sep. 27, 2023 12:24 AM            </div>


            <div class="description introduction">
                <p>I have uploaded the homework assignment in the shared google drive, and it can also be downloaded <a href="https://www.dropbox.com/scl/fi/ffpkca3rgc7bc4wius668/AST4320_Assignment_2023.pdf?rlkey=w4vbs5pmoqjmaoe3qlkht4j7l&amp;dl=0">here</a>. Note that you need to finish at least 60% to be able to attend the final exam. We will not publish solutions for this assignment. Please consider this as a practice exam and try to go through as many exercises as you can.&nbsp;</p>

<p>Good luck!&nbsp;</p>

<p>Sijing&nbsp;</p>

            </div>
        </div>



              <div class="vrtx-result-10 vrtx-resource">
          <div class="vrtx-title">
            <a class="vrtx-title" href="/studier/emner/matnat/astro/AST4320/h23/beskjeder/lecture-today-is-cancelled-.html">Lecture today is cancelled </a>
          </div>

            <div class="published-date">
              <span class="published-date-prefix">
Published              </span>
Sep. 20, 2023 8:03 AM            </div>


            <div class="description introduction">
                <p>The additional lecture today (Sep. 20) is cancelled and there will not be a group session either. We will have the lecture on Friday as usual.&nbsp;</p>

<p>Sijing&nbsp;&nbsp;</p>

            </div>
        </div>



              <div class="vrtx-result-11 vrtx-resource">
          <div class="vrtx-title">
            <a class="vrtx-title" href="/studier/emner/matnat/astro/AST4320/h23/beskjeder/change-of-the-date-time-for-the-lectures-next-week.html">Change of the date/time for the lectures next week</a>
          </div>

            <div class="published-date">
              <span class="published-date-prefix">
Published              </span>
Sep. 6, 2023 7:32 PM            </div>


            <div class="description introduction">
                <p>For next week, we will swap the time slots for the lecture on Tuesday (September 12) with the group session on Wednesday, (Sep. 13.). And the lecture on Friday (Sep. 15) is also replaced by a group session. In brief, we will have the lecture on Wednesday, and group sessions on Tuesday and Friday.&nbsp;</p>

<p>The week after we will have lectures on Tuesday, Wednesday, and Friday (Sep. 19, 20, 22).&nbsp;</p>

<p>Sijing&nbsp;</p>

            </div>
        </div>



              <div class="vrtx-result-12 vrtx-resource">
          <div class="vrtx-title">
            <a class="vrtx-title" href="/studier/emner/matnat/astro/AST4320/h23/beskjeder/numerical-project-and-schedule-next-week.html">Numerical Project and schedule next week</a>
          </div>

            <div class="published-date">
              <span class="published-date-prefix">
Published              </span>
Aug. 29, 2023 10:54 AM            </div>


            <div class="description introduction">
                <p>Dear all,&nbsp;</p>

<p>I have uploaded the numerical project into the google drive now. And in case you cannot access it, it can also be downloaded <a href="https://www.dropbox.com/scl/fi/orh8wc53ohp77ly8dgd83/AST4320_Numerical_Project.pdf?rlkey=ngmwcfpqme4ngsx2jtecvg913&amp;dl=0">here</a>.&nbsp;</p>

<p>Next week the lectures on Tuesday and Friday will be replaced by group sessions, so there will be 3 group sessions. The group teacher will introduce the simulation codes, analysis tools and help you to start the project.&nbsp;</p>

<p>Good luck!&nbsp;</p>

<p>Sijing&nbsp;</p>

            </div>
        </div>
    

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