Since the IAU (maser-)Symposium 287 in Stellenbosch/South Africa (Jan. 2012), great progress has been achieved in studying extragalactic maser sources. Sensitivity has reached a level allowing for dedicated maser surveys of extragalactic objects. These included, during the last years, water vapor (H2O), methanol (CH3OH), and formaldehyde (H2CO), while surveys related to hydroxyl (OH), cyanoacetylene (HC3N) and ammonia (NH3) may soon become (again) relevant. Overall, with the upgraded Very Large Array (VLA), the Atacama Large Millimeter/submillimeter Array (ALMA), FAST (Five hundred meter Aperture Synthesis Telescope) and the low frequency arrays APERTIF (APERture Tile in Focus), ASKAP (Australian Square Kilometer Array Pathfinder) and MeerKAT (Meer Karoo Array Telescope), extragalactic maser studies are expected to flourish during the upcoming years. The following article provides a brief sketch of past achievements, ongoing projects and future perspectives.
翻译:自Stellenbosch/南非的IAU(maser-) Symposium 287 Stellenbosch/南非的IAU(maser-) Symposium 287 Symposium 287 (Juan.2012年)以来,在研究远银显微镜来源方面取得了巨大进展,感知性已达到允许对超银形天体进行专门的显微镜调查的水平,其中包括过去几年里的水蒸气(H2O)、甲醇(CH3OH)和甲醛(H2CO),而与氢氧基(OH)、丙烯(HC3NH3N)和氨(NH3)有关的调查可能很快会变得(再次)相关。总体而言,随着VLA(VLA)、Atacama 大型毫米/子仪(ALMA)、 FAST(500米全面综合望远镜)和低频阵列APERIF(焦点)、ASKAP(PERTIF)、ASAPKAP(ART)和MERKAT(MemerKaroo Array Tender Telocope)升级望远镜(ML)的测量外研究,预计会在未来几年内将繁荣发展。