Dark matter in the Central Region of NGC 3256
We investigated the central mass distribution of the luminous infrared galaxy NGC 3256 at a distance of 35 Mpc by using CO(1-0) observations of the Atacama Large Millimeter and sub-millimeter Array (ALMA) and near-IR data of the Two Micron Sky Survey (2MASS). We found that there is a huge amount of...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Penerbit Universiti Kebangsaan Malaysia
2018
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| Online Access: | http://journalarticle.ukm.my/12129/1/20%20Israa%20Abdulqasim%20Mohammed%20Ali.pdf |
| _version_ | 1796931621040947200 |
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| author | Israa Abdulqasim Mohammed Ali, Hwang, Chorng-Yuan Zamri Zainal Abidin, Plunkett, Adele Laurie |
| author_facet | Israa Abdulqasim Mohammed Ali, Hwang, Chorng-Yuan Zamri Zainal Abidin, Plunkett, Adele Laurie |
| author_sort | Israa Abdulqasim Mohammed Ali, |
| collection | UKM |
| description | We investigated the central mass distribution of the luminous infrared galaxy NGC 3256 at a distance of 35 Mpc by using CO(1-0) observations of the Atacama Large Millimeter and sub-millimeter Array (ALMA) and near-IR data of the Two Micron Sky Survey (2MASS). We found that there is a huge amount of invisible dynamical mass (4.48 × 1010 ) in the central region of the galaxy. The invisible mass is likely caused by some dark matter, which might have a cuspy dark matter profile. We note that this dark matter is difficult to explain with the conventional Modified Newtonian Dynamics (MOND) model, which is only applicable at a low acceleration regime, whereas the acceleration at the central region of the galaxy is relatively strong. Therefore, this discovery might pose a challenge to the conventional MOND models. |
| first_indexed | 2024-03-06T04:20:40Z |
| format | Article |
| id | ukm.eprints-12129 |
| institution | Universiti Kebangsaan Malaysia |
| language | English |
| last_indexed | 2024-03-06T04:20:40Z |
| publishDate | 2018 |
| publisher | Penerbit Universiti Kebangsaan Malaysia |
| record_format | dspace |
| spelling | ukm.eprints-121292018-09-28T22:35:21Z http://journalarticle.ukm.my/12129/ Dark matter in the Central Region of NGC 3256 Israa Abdulqasim Mohammed Ali, Hwang, Chorng-Yuan Zamri Zainal Abidin, Plunkett, Adele Laurie We investigated the central mass distribution of the luminous infrared galaxy NGC 3256 at a distance of 35 Mpc by using CO(1-0) observations of the Atacama Large Millimeter and sub-millimeter Array (ALMA) and near-IR data of the Two Micron Sky Survey (2MASS). We found that there is a huge amount of invisible dynamical mass (4.48 × 1010 ) in the central region of the galaxy. The invisible mass is likely caused by some dark matter, which might have a cuspy dark matter profile. We note that this dark matter is difficult to explain with the conventional Modified Newtonian Dynamics (MOND) model, which is only applicable at a low acceleration regime, whereas the acceleration at the central region of the galaxy is relatively strong. Therefore, this discovery might pose a challenge to the conventional MOND models. Penerbit Universiti Kebangsaan Malaysia 2018-06 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/12129/1/20%20Israa%20Abdulqasim%20Mohammed%20Ali.pdf Israa Abdulqasim Mohammed Ali, and Hwang, Chorng-Yuan and Zamri Zainal Abidin, and Plunkett, Adele Laurie (2018) Dark matter in the Central Region of NGC 3256. Sains Malaysiana, 47 (6). pp. 1241-1249. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid47bil6_2018/KandunganJilid47Bil6_2018.html |
| spellingShingle | Israa Abdulqasim Mohammed Ali, Hwang, Chorng-Yuan Zamri Zainal Abidin, Plunkett, Adele Laurie Dark matter in the Central Region of NGC 3256 |
| title | Dark matter in the Central Region of NGC 3256 |
| title_full | Dark matter in the Central Region of NGC 3256 |
| title_fullStr | Dark matter in the Central Region of NGC 3256 |
| title_full_unstemmed | Dark matter in the Central Region of NGC 3256 |
| title_short | Dark matter in the Central Region of NGC 3256 |
| title_sort | dark matter in the central region of ngc 3256 |
| url | http://journalarticle.ukm.my/12129/1/20%20Israa%20Abdulqasim%20Mohammed%20Ali.pdf |
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