2012.05.29
First Test Polarization Observation with ACA Antennas and ACA Correlator
On April 29 (Chilean time), we conducted a test polarization observation using five Japanese 7-m ACA (Atacama Compact Array) antennas and a Japanese ACA correl…
ALMA Discoveries
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2012.05.02
Successful Interferometer Test with Two Japanese Antennas 1966 m away
On the night of April 28 (Chilean time), interference fringes were successfully detected in an interferometer test using two Japanese antennas at a distance of…
2012.04.12
ALMA Reveals Workings of Nearby Planetary System
A new observatory still under construction has given astronomers a major breakthrough in understanding a nearby planetary system that can provide valuable clu…
2012.04.02
NAOJ Chile Observatory Established
On April 1, 2012, the NAOJ Chile Observatory was established as a center of NAOJ’s research activities in Chile. Since April 2000, the NAOJ ALMA Project …
2012.02.03
ALMA EA-FEIC Completed the Last ACA Receiver System
On January 4, the ALMA East Asia Front-End Integration Center (EA-FEIC) in Taiwan completed the fabrication and evaluation of all the receiver systems for the …
2011.11.21
25 Antennas at AOS
On November 15, one more North American 12-m antenna was transported from the Operations Support Facility (OSF) at 2900 m to the Array Operations Site (AOS) at…
2011.10.03
ALMA Opens Its Eyes
The most powerful millimeter/submillimeter-wavelength telescope in the world opens for business and reveals its first image Humanity’s most complex grou…
2011.09.02
Successful Interferometer Test with Japanese 7-m and 12-m Antennas at AOS
On September 2, an interferometer test was conducted with the first Japanese 7-m and first 12-m antennas at the Array Operations Site (AOS) at 5000 m asl and i…
2011.08.11
Successful Interferometer Test with Two Japanese 7-m Antennas
On August 11, an interferometer test using two Japanese 7-m antennas was conducted at the Operations Support Facility (OSF) at 2900 m asl and interference frin…
2011.08.11
Successful Interferometer Test with Sixteen 12-m Antennas
On August 6, an interferometer test was conducted at the Array Operations Site (AOS) at 5000 m asl and fringes of 120 baselines were successfully obtained with…
2011.06.06
Successful Interferometer Test with Japanese 7-m antenna and 12-m antenna
On May 30, radio waves emitted by a variable star VX Sagittarii were collected by a Japanese 7-m antenna and a 12-m antenna, and interference fringes were suc…
2011.04.26
First Successful Interferometer Test with Two Japanese Antennas
On March 10, 2011, at the Operations Support Facility (OSF) at 2900 m asl., radio waves emitted by the Sun were collected by two 12-m Japanese antennas and in…
2010.12.12
Nine 12-m Antennas at AOS
On December 12, an American antenna of 12 m in diameter was transported from OSF (2,900 m asl) to AOS (5,000 m asl), bringing the total number of the antenna…
2010.12.08
ALMA Board Statement on Early Science
— ALMA Board Statement on Early Science — “At its meeting on November 16th-18th 2010, the ALMA Board noted the tremendous recent progress in…
2010.12.08
Test Image 1: Spiral Galaxy NGC253
This shows the well-known spiral NGC253, with an optical image of the whole galaxy on the left (credit: ESO). The ALMA test images show dense clouds of gas in …
2010.12.08
Test Image 2: Hot Molecular Core G34.26+0.15
An example of ALMA’s potential as a spectroscopic instrument: on the left is the map of the molecular “hot core” G34.26+0.15, which is unreso…
2010.12.08
Test Image 3: Disk around Bata-Pictoris
This shows the emission from the disk of dust surrounding the star Beta-Pictoris. On the left is an image at 70 microns from Herschel, (Olofsson et al., SDP Pr…
2010.12.08
Test Image 4: Quasar BRI 0952-0115
As a test of ALMA’s ability to observe broad spectral lines, we observed the quasar BRI 0952-0115, which is at a redshift of z = 4.43. The object is agai…
2010.05.29
Four 12-meter Antennas at AOS
At the Array Operations Site (AOS), there are currently four 12-meter antennas, which are under the performance evaluation. Since each of the antennas is usual…
2009.12.25
ALMA Video "Japanese ALMA antenna became the first to arrive at the ALMA 5000 m site." was released.
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NEW ARTICLES
2025 8.8
The Universe’s Secret Harvest: ALMA Sheds Light on “the Cosmic Grapes”
Super high-resolution ALMA and JWST observations unveil unexpected substructure and underlying gas dynamics in a faint,…
2025 8.5
Discovery of Protoplanetary Disk Caught in Explosion Driven by Stellar Jet
A research team led by Masataka Aizawa of Ibaraki University studied a protoplanetary disk around the young star WSB 52…
2025 6.26
Development of Total Power GPU Spectrometer was approved by ALMA Board
In April 2025, the ALMA Board approved the development of a new spectrometer for the Morita Array (*) designed and deve…
