Dark matter in the central region of NGC 3256

Israa Abdulqasim Mohammed Ali, Chorng Yuan Hwang, Zamri Zainal Abidin, Adele Laurie Plunkett

研究成果: 雜誌貢獻期刊論文同行評審

3 引文 斯高帕斯(Scopus)


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.

頁(從 - 到)1241-1249
期刊Sains Malaysiana
出版狀態已出版 - 6月 2018


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