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SA telescopes help trace neutron star collision

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The South African Astronomical Observatory and the Southern African Large Telescope are among the 70 ground- and space-based observatories that observed the explosion of two colliding neutron stars, immediately after their gravitational shock waves were detected by the U.S.-based Laser Interferometer Gravitational-Wave Observatory.

Neutron stars are the smallest, densest stars known. They are the remains of massive stars which exploded as supernovae. In this particular event, dubbed GW170817, two such neutron stars spiralled inwards and then collided, emitting gravitational waves that were detectable for about 100 seconds. The collision also resulted in a kilonova explosion of light, initially in the form of gamma rays which were detected by space-based telescopes.  The gamma rays were then followed by X-rays, ultraviolet, optical, infrared, and radio waves.

This allowed astronomers to localise the event within hours and launch follow-up observations by SALT and numerous other telescopes in South Africa and around the world.  South African activities also included the first observations contributing to published scientific results by the MeerKAT radio telescope under construction in the Karoo.

Gravitational waves from colliding black holes were first detected only two years ago, and have been detected three more times since then, leading to the 2017 Nobel Prize in Physics being awarded to three US scientists. Black hole collisions, however, are not expected to emit light.  GW170817 is the first time light and gravitational waves from the same event have been observed.

The significance of the present event lies in the combination of the gravitational waves and light.   “Imagine you have only one sense”, explains Petri Vaisanen, Head of SALT Astronomy Operations, who was the observer at SALT during the frantic search for the counterpart for the gravitational wave event.  “All your life you have merely looked at the world.  Two years ago you heard something, voices coming from somewhere around you.   But then, suddenly, you actually see someone talking. How much more will you understand about how the world works when you put those together?  Immensely more.  That to me sums up the momentous discovery, and hints at the possibilities going forward.”

August 18, 2017, the day and night following the LIGO detection and the initial successful searches in Chile for the counterpart, was a busy day for observational astronomers.  “After a flurry of messages and emails that afternoon in Sutherland, I finally got the coordinates”, continues Vaisanen.  “There was a new object, which had caused the whole of space-time to ripple, sitting at the outskirts of the galaxy NGC 4993 some 130 million light-years away.  I knew that everyone with a working telescope in the Southern Hemisphere was scrambling to get data on it.  We decided to drop all other plans for that evening, and went for a spectral observation with SALT, since you need a large telescope for such observations breaking up the light into all its colours.  It was a difficult observation since we had to do it in twilight, before it got properly dark.  I’m very proud of the whole team, SALT was only the third observatory to provide a spectrum of the target, and the first spectrum that clearly started showing anomalous behaviour proving that this was no run-of-the-mill transient event”.

The significance of getting early observations stems from the afterglow of the collision changing very rapidly.  Piecing together the new science from the event requires combining observations spanning the first hours, days and weeks after the merger.  The first SALT spectrum has a very prestigious spot in the combined scientific paper, with thousands of authors and hundreds of institutions. In addition, several, more detailed scientific papers have also been written based on SALT, SAAO and other Sutherland observations.

“Finally, the irony of the moment for me, anxiously sitting at the telescope that evening looking at the new object, was that just three weeks before I had attended a meeting discussing the future of optical searches of gravitational waves and the SAAO part in it.  There were arguments that it could be decades before we are able to localise such events well enough for observations, and it would probably not be worth expending the effort.  It’s amazing how quickly things change.”

Sutherland telescopes reveal the details of the neutron star merger

Theorists have predicted that what follows the initial collision is a “kilonova” explosion— a phenomenon by which the material that is left over from the neutron star collision, which glows with light, is blown out of the immediate region, far out into space. The light-based observations from other large international telescopes show that heavy elements, such as lead and gold, are created in these collisions and subsequently distributed throughout the universe – confirming the theory that a major source for the creation of elements heavier than iron does, indeed, results from these neutron star mergers.

The early SALT observations showed that the explosion was relatively bright and blue. Only two or three days later, further observations by SALT, SAAO and other major international telescopes showed that the light was rapidly fading and turning red, due to the dusty debris blocking the bluer light, as predicted by the theory of the evolution of a kilonova explosion. Simultaneously, MASTER (a joint Russian-South African optical telescope located in Sutherland) and  IRSF (Infra-Red Survey Facility; a joint Japanese-South African infrared telescope also in Sutherland) continued to monitor GW170817 for two weeks, showing that it gradually faded in the visible light but brightened in the infrared, consistent with the final stages of the afterglow from the surrounding debris.

The results of this unprecedented event have demonstrated the importance of collaborative multi-messenger observations and mark a new era in astronomy. “The ability of SALT and SAAO telescopes to respond rapidly to unexpected discoveries is a major reason for the success of these observations and will ensure similar successes in the future”, says Dr Stephen Potter, Head of Astronomy at the SAAO. “We are very proud to have played a major role in such a historical event thanks to the sterling efforts and expertise of SAAO and SALT staff who ensure that our observatory is at the forefront of world-class scientific endeavours.”

 

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Smart grids needed for Africa’s utilities

Power utilities across Africa should rethink their business models and how they manage and monetise their assets to keep pace with the changing energy ecosystem, says COLIN BEANEY, Global Industry Director for Asset-intensive and Energy and Utilities at IFS.

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Africa’s abundant natural resources and urgent need for power mean that it is one of the most exciting and innovative energy markets in a world that is moving rapidly towards clean, renewable energy sources. The continent’s energy industry is taking new approaches to providing unserved and underserved communities with access to power, with an emphasis on smart technologies and greener energy sources.

Power systems are evolving from centralised, top-down systems as interest in off-grid technology grows among African businesses and consumers. And according to PwC, we will see installed power capacity rise from 2012’s 90GW to 380GW in 2040 in sub-Saharan Africa. Power utilities are needing to rethink their business models and how they manage and monetise their assets to keep pace with the changing energy ecosystem.

Energy and utilities providers are transforming from centralised supply companies to more distributed, bi-directional service providers. They can only achieve this through the evolution of “smart grids” where sensors and smart meters will be able to provide the consumer with a more granular level of detail of power usage. This shift from an energy supplier to “lifestyle provider” will require a much more dynamic and optimised approach to maintenance and field service.

African companies must thus embrace digital transformation as an imperative. This transformation begins by embracing enterprise asset management to improve asset utilisation. The subsequent steps are enhancing upstream and downstream supply chain management; resource optimisation; introducing enterprise operational intelligence; embracing new technologies such as the Internet of Things, machine learning, and predictive maintenance; and becoming a smart utility.

Embracing mobility to drive ROI

Getting it right is about putting in place an enterprise backbone that accommodates asset and project management, multinational languages and currencies, new energies and markets, visualisation of the entire value chain, and mobility apps. Mobile technologies that support the field workforce have a vital role to play in driving better ROI from utilities’ investments in enterprise asset management and enterprise resource planning solutions.

Today’s leading enterprise asset management solutions feature powerful functionality for mobile management of the complete workflow of work orders – from logging status changes and updates, from receiving and creating new orders to concluding the job and reporting time, material and expenses. Such solutions are easy to deploy and intuitive for end users to learn and use.

Importantly for organisations operating in parts of the continent with poor telecoms infrastructure, connectivity is not an issue. The solutions work offline and synchronises when network connectivity is available. Users can work on any device—laptops, tablets, and smartphones—commercial or ruggedised.

By ensuring that field technicians have easy access to information and processes, the mobile solution enables technicians and maintenance engineers to easily do the following tasks:

·         Create a new work order on the fly and log new opportunities

·         Access both historical and planned work information when requested

·         Permit customers to sign when the job is completed

·         Capture measurements and inspection notes on route work orders

·         Create new fault reports on routing

·         Facilitate documentation through photo capturing

·         Provide easy access to technical data and preventive actions.

The power of mobility allows the engineer to be the origin of all data capture on a service event. They can easily inquire on asset history, record parts used or parts needed for repair, record labour hours, and expenses as they occur, and any notes of repairs performed. When coupled with workforce management tools, such solutions unlock significant productivity gains for utilities who are trying to get the most from their workforce and assets.

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Brands fall for app vanity

The experience of a mobile screen full of icons, representing independent apps that your need to open to experience them, is making less sense. Instead, businesses should serve customers with an ‘app-like’ experience inside the digital platform they already use, says PIETER DE VILLIERS, Group CEO at Clickatell.

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Many brands remain obsessed with creating mobile apps. This not only defies trends that point to increasing consumer app apathy, but can exclude a sizeable portion  of your customers in emerging economies. Companies need to engage with their users where they are rather than forcing them onto an app, in what can only be described as brand vanity. 

In 2017 there were around 2.2 million apps available in the iOS app store and over 3 million on Google Play. And, while the number of apps being downloaded continues to rise, analysis shows that consumers are only using 30 apps per month and accessing just 9 on a day-to-day basis. 

While these numbers still seem attractively high, in reality the majority of the apps we use are for messaging (like Facebook Messenger, WhatsApp, and WeChat) and our social networking, gaming, leisure, dating or utility activities. 

Despite the facts, the application strategy as the holy grail for digital transformation is still being pushed even within large progressive brands. What’s more, some advertising agencies and digital consultants are still pushing apps as the best means for companies to connect with their customers. This has resulted in some organisations stubbornly doubling down on app strategies which are simply not showing return on investment (ROI). 

It’s not immediately clear to us whether the fascination with apps is a roll-over from long overdue projects or whether brand owners equate a mobile-first strategy with a mobile app. Mobile-first in 2018 means customer first, and therefore embracing chat commerce in order to deliver services with convenience and simplicity in mind. 

Why apps won’t win the internet

The problem with apps goes beyond user fatigue. In the first instance, many apps are poorly designed, assuming technical sophistication which may not match reality for the average customer. Poor user interfaces and attempts to provide complex engagement can result in even the best ideas missing their targets due to lack of engagement. 

Secondly, we all know that economic realities drive consumer behaviour. In Africa, new mobile phone users typically opt for feature phones over smartphones. With a longer battery life and a much more accessible price point, feature phones still allow for a basic internet connection, chat platforms like WhatsApp, and call and message functionality. In these regions, the cost of an app – even if it’s free – goes far beyond installing it. Constant updates require reliable and cheap access to the internet. For the average phone owner in an emerging market, this can be a serious challenge. 

Thirdly, and most importantly, apps must be relevant to their intended market. Frequency of usage is a key measure of relevance. 

Apps which are used on a daily basis, like health and fitness trackers, enjoy constant engagement. New features which are added are eagerly awaited by users who are happy to update their apps. 

However, users may well question the relevance of the app if they are required to conduct updates on a monthly or even weekly basis when they are only making use of the app once or twice a year. 

On average, I download one app per quarter. Some I use more frequently than others, but all of these apps need to be regularly updated to maintain security, update features, and fix bugs. Many apps are pushing out updates much more frequently. I noticed over the past year that I could go from having all apps updated, to 32 apps requiring an update in five days.

When it comes to a customer-first digital strategy, companies should be asking themselves if an app is really the best way to reach their target audience. 

In fact, at the end of 2016, Gartner predicted that by 2019, 20 percent of brands would ditch their mobile app. What’s more, in its 2018 predictions, the company forecast that by 2021, more than 50 percent of corporations would spend more per annum on bots and chatbots than on mobile app development. 

So, we need to ask, what is the alternative for CIOs, CDOs, CMOs, and digital leaders who are looking for ways to reach, retain and grow their customer base? 

The logical app alternative 

The old battle advice goes: fight your enemy where they are not. Military strategists agreed that having your enemy come to you and fight you on your own terms was preferable. In a world where customers have access to thousands of offerings and millions of deals online, we need to flip that idea to Meet Your Customers Where They Are. 

Any marketeer will tell you just a how difficult it is to drive app downloads. Development, cross platform testing and user interface aside, the marketing campaign required to get customers to download the app can swallow entire annual budgets and still come up short. 

Looking at the facts, it makes infinitely more sense to work within the digital platforms already being used by your target audience. 

Clickatell is already enabling chat commerce for some of the leading global brands with its Touch solution. This allows organisations to serve their customers with an ‘app-like’ experience inside the chat or browser platform of their customer’s choice (Twitter, Facebook Messenger, etc.) 

Brands can now send an actionable Touch link such as ‘find the nearest ATM’ or ‘reset my password’ within a chat stream that will open an intuitive touch card without the user having to download an app to perform the action. Services can also be linked to the in-app experience for brands not looking to abandon their app efforts. 

Working with our clients, many of whom are global innovators and thought leaders, we’ve found that having the courage to design with an ‘end user first’ approach and dealing with the back-end complexity behind the scenes results in cost efficient customer delight and ROI. 

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