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SL joins American Georgia State University’s global Cosmic Ray Muon Detector network
Sri Lanka became the very first country (outside the USA) to deploy Georgia State University’s (GSU) Cosmic Ray Muon Detector. Sri Lanka now becomes GSU’s first international member as a part of its ongoing deployment plan for a global muon detector network and hosts a detector each at two strategic locations – Badulla, hosted at the University of Uva Wellassa campus, and Colombo, hosted at the University of Colombo campus, according to a press release issued by Prof. Unil Perera of GSU.
These two detectors have started logging data since end of March, and the data is being shared between the campuses and communicated to a central repository, managed by the GSU team in Atlanta, Georgia. The data from the detectors consists of raw muon counts (flux) sampled at one-minute intervals, which will be comprehended with meteorological data from open data sources and meteorology department collaborations. These datasets, along with the datasets generated by the entire network of muon detectors that have been deployed and those that will be deployed in near and far future, will be made available for free access to promote climate and other inter-disciplinary research across the globe.
Cosmic rays are high energy particles moving through space at nearly the speed of light and are one of the few direct samples of matter from outside our solar system. Most cosmic rays are protons (i.e., ionized hydrogen nuclei) with galactic origins. Other cosmic ray particles include gamma rays, electrons, neutrinos, and heavier elements. Protons could be deflected by magnetic fields making it hard to determine their origin.
Discovered in 1912, many things about cosmic rays remain a mystery more than a century later. Cosmic ray radiation has been blamed for causing electronics problems in satellites and other machinery. Earth’s magnetic field and atmosphere shield the planet from 99.9 percent of the radiation from space. However, for people outside the protection of Earth’s magnetic field, space radiation becomes a serious hazard. A previous Mars rover mission during its 253-day cruise revealed that the radiation dose received by an astronaut on even the shortest Earth-Mars round trip is equivalent to receiving a whole-body CT scan every five or six days.
This cosmic ray detector network deployment in Sri Lanka was spearheaded by GSU and led by computer scientist and engineer Dr. Ashwin Ashok (Associate Professor, Computer Scientist), nuclear/particle physicist Dr. Xiaochun He (Regents’ Professor, Physics and Astronomy), and device and biomedical physicist A. G. Unil Perera (Regents’ Professor, Physics and Astronomy). The team visited Sri Lanka to set up two cosmic ray muon detectors at the Faculty of Applied Sciences, Uva Wellassa University (UWU) in Badulla, and the Department of Physics at the Faculty of Science at the University of Colombo (UOC). Professor Jagath Pitawala and Dr. Rasanga Samaraweera (a former GSU graduate) will lead the project at UWU. Prof. Upul Sonnadara, Dr. Kithsiri Jayananda, and Mr. Deshitha Wickramarathna will be the lead team working at UOC on the project. The cost of the detectors, associated electronics and travel costs were borne by GSU, with an agreed official memorandum of understanding (MoU) and a material transfer agreement (MTA). The participants (including the researchers) will have access to the worldwide data and will be equal partners of the network of scientists studying the effects of the variation of muon flux with exogenous parameters such as elevation, time of the year and ambient temperature and pressure.
At present GSU has five cosmic ray detectors installed in the USA, three in Atlanta at the GSU main campus, another at Mount Wilson, California (GSU Chara Array cite) and at the Hard Labor Creek Park Observatory, (another GSU observatory in Rutledge, GA). In addition to the two detectors in Sri Lanka, the next stage of international installations is planned for a subset of countries in Asia and Europe. The main goal of the project at the near-term is to install more detectors at collaborating institutions worldwide and to study the variations of cosmic ray muon flux which are associated with the regional weather patterns and with the changes in space weather. The long-term goal is to install detector(s) in every country in the world and to use the network for several interdisciplinary studies which include space and terrestrial weather monitoring, public health (related to cosmic ray radiation), and other practical applications based on cosmic ray particle studies.
GSU is a “research one-R1” public University in the USA (recognized as one of the most research-intensive institutions by the Carnegie Classifications with at least 20 research or scholarship-based doctoral degrees and spend at least $5 million on research each year) and the nation’s second most innovative university in the US (US News and World Report) with more than 250 different majors and 35 different PhD programmes, has a fruitful connection with Sri Lanka. GSU has graduated more than 30 Sri Lankan students with Physics doctorates in addition to several doctorates in Computer Science, Biology, Chemistry, etc. Several of those GSU doctorates, particularly from Physics, are working as productive faculty members at several Sri Lankan universities and other reputed research laboratories around the globe.
Professor Unil Perera, a UOC alumni, who was also the graduate Director of Physics at GSU from 1995-2012, had established several joint programmes GSU, IIT Chennai and IFS, Hanthana and with UOC. GSU proudly and cordially welcomes this research collaboration and hopes to pursue these ties for a long term and further the cordial USA-Sri Lanka relationship.
Latest News
Sun directly overhead Bentota, Thiniyawala, Iththakanda, Udawalawe, and Kataragama about 12.08 noon t9day (06)
The sun is going to be directly over the latitudes of Sri Lanka from 28th of August to 07th of September due to its apparent southward relative motion.
The nearest places of Sri Lanka over which the sun is
overhead today (06) are Bentota, Thiniyawala, Iththakanda, Udawalawe, and Kataragama about 12.08 noon
News
UN welcomes Lanka’s anti-graft drive, seeks end to impunity
MONETABRIEF –The UN human rights chief on Thursday welcomed Sri Lanka’s robust anti-corruption drive but urged President Anura Kumara Dissanayake to apply the same vigour to ending impunity for continuing rights abuses.
In its latest report to the UN Human Rights Council in Geneva, High Commissioner Volker Turk noted that cases of torture and deaths in custody continued to be reported in Sri Lanka despite the change of administration.
“While it is encouraging that the Sri Lankan authorities have taken action to address corruption cases and some crimes linked to the post-war period, more needs to be done to end the long legacy of impunity in the country,” the rights chief said.
His report, covering October 2025 to July 2026, notes steps to tackle corruption, including high-profile arrests and investigations linked to political killings, enforced disappearances and the 2019 Easter Sunday attacks.
He said it had been a difficult period for Mr Dissanayake’s new government, following the devastating Cyclone Ditwah which killed some 650 people and devastated much of the island and a global spike in energy prices.
The report noted that the Human Rights Commission of Sri Lanka had documented 602 cases of torture and ill-treatment in 2025 and 138 cases by April 2026.
The local commission also reported 18 deaths in custody last year and a further three by April this year. In one such case, a 40-year-old inmate detained for a minor drug-related offence died at Welikada Prison in Colombo on 3 May, allegedly from severe beatings.
“This Government still has an opportunity to turn the tide on decades of abuse of executive power, repressive laws and custodial violence, and entrenched impunity,” Turk said.
He regretted that the government had yet to deliver on its promise of legal and institutional reforms and continued to apply the repressive Prevention of Terrorism Act (PTA), resulting in arbitrary arrests and prolonged detention without charge.
Civil society actors, activists and journalists remained subject to state surveillance, while tensions over land and religious sites continued to simmer, the report said.
It also highlighted violent riots at Negombo Prison in July, which left at least 32 dead, underscoring the urgent need for prison reform to address systemic issues, including severe overcrowding.
The UN Human Rights Office had received at least 16 allegations of surveillance against civil society actors, activists and journalists, the report said.
There was “a clear and continuing pattern of state surveillance, intimidation and reprisals by military and intelligence officials, including from the Criminal Investigations Department or the Terrorism Investigation Division”.
“Individuals are repeatedly questioned about their travels, especially to Geneva and engagement with UN human rights processes, as well as their organizational affiliations, funding sources, and participation in protests or commemorative events.”
While the Government had continued to denounce racism and promote national unity, wider efforts to ensure truth and justice risked stalling and the momentum for transformative change being lost, the report warned.
Failures to effectively investigate and prosecute crimes under international law allegedly committed during the armed conflict persisted.
“It is crucial that there is decisive and meaningful action toward accountability for crimes and violations by all parties during the more than two-decade armed conflict,” Turk said.
He noted the recent decision by the Attorney-General to indict former Eastern Province Chief Minister Sivanesathurai Chandrakanthan, also known as Pillayan, and three others in connection with the abduction and murder of former Eastern University Vice-Chancellor Professor Sivasubramaniam Raveendranath in 2006.
“It is, however, regrettable that many other serious emblematic cases remain stalled for years, including the killing of 17 Action Contre La Faim aid workers in Muttur 20 years ago,” he said, calling for meaningful steps to resolve such delays.
The High Commissioner urged Sri Lanka to redouble its reconciliation and accountability efforts. He called for a moratorium on the use of the Prevention of Terrorism Act pending its repeal, as well as the release of long-term detainees held under it.
He also called for all individuals credibly accused of human rights violations to be excluded from senior positions in government, the security sector or the diplomatic service until such allegations were genuinely addressed and resolved.
He urged the Government to support victims’ memorialisation initiatives and to release military-occupied lands.
News
Dispute which triggered listed company director being detained at BIA resolved
A dispute between a wholly owned subsidiary of Lanka Realty Investments PLC, Mulberry Holdings (Pvt) Ltd., and a contractor, Omni Engineering & Trading Solutions, that resulted in Executive Director Hisham Jamaldeen of Lanka Realty being stopped at Katunayake and prevented from leaving on a business visit to the UK has been resolved with Jamaldeen bailed and the travel ban imposed on him revoked by the Maligakanda Magistrate, Lanka Realty’s said in a Stock Exchange filing last week.
This followed Mulberry agreeing to pay Rs. 25 million to Omni on or before Sept. 26.
Following media reports of Jamaldeen being prevented from leaving the country at the BIA, Lanka Realty made two Stock Exchange filings on Sept. 3 – the first detailing the dispute between the two parties and the second indicating that the matter had been settled.
In the first filing, the Secretaries for Lanka Realty said:
“The article refers to Mr. Mohamed Hisham Jamaldeen, Executive Director of Lanka Realty Investments PLC and a Director of Mulberry Holdings (Pvt) Ltd, a wholly owned subsidiary of the Company and the developer of “Mulberry Residences” in Colombo 10.
“Mulberry Holdings (Pvt) Ltd entered into a construction contract with Mr. Randika of M/s Omni Engineering & Trading Solutions on 21st June 2022 for a sum of LKR 32,854,992.00), which is less than 1% of the total value of the “Mulberry Residences” Project which is around LKR 3.6 Billion.
“The said contract is governed by the CIDA/SBD1 Standard Bidding Document Conditions of Contract, which provides for adjudication and, if required, arbitration as the applicable dispute resolution process. The Company understands that the underlying matter relates to a contractual payment dispute involving Mulberry Holdings (Pvt) Ltd’s aforcsaid contract.
“Following a call received from the Colombo Crime Division (CCD), Mr. Jamaldeen went to the CCD on 25th August 2026 and provided a statement in relation to the matter inter alia explaining that the matter in dispute was arising from a civil contract. He was not arrested on that date and was not informed at that time or thereafter prior to receiving information at the Airport, that a travel ban had been imposed.
“On 2nd September 2026, while travelling overseas for business on a pre-arranged itinerary, Mr. Jamaldeen was informed at immigration of a travel ban imposed on 24th August 2026, following which he was arrested by the CCD. A bail application is expected to be made when Mr. Jamaldeen is produced before the Magistrate’s Court of Maligakanda today, 3rd September 2026.”
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