Electromagnetic radiation

• But no one knew how common it was among mammals until now.
• Our research, published in Royal Society Open Science today, found this glow – known as fluorescence – is extremely common.
• Then, we tested if the fluorescence we observed in museum specimens was natural and not caused by preservation methods.

Nightclub lights

• Nightclub visitors will be familiar with white clothes, or perhaps their gin and tonic, glowing blue under UV light.
• These chemicals then emit visible light, which is lower-energy electromagnetic radiation.
• In the case of gin and tonic, this is due to the presence of the quinine molecule in the tonic water.

How often do mammals glow?

• Our team came together because we were curious about fluorescence in mammals.
• We wanted to know if the glow reported recently for various species was really fluorescence, and how widespread this phenomenon was.
• We started with the platypus to see if we could replicate the previously reported fluorescence.

Mammals in dazzling lights

• Fluorescence is clearly common and widely distributed among mammals.
• Nocturnal mammals were indeed more fluorescent, while aquatic species were less fluorescent than those that burrowed, lived in trees, or on land.
• Based on our results, we think fluorescence is very common in mammals.
• Linette Umbrello receives funding from the Australian Biological Resources Study and is a Research Associate at the Western Australian Museum.

• DT Research , the leading designer and manufacturer of purpose-built computing solutions for vertical markets, today announced the expansion of the LT300 line of fully rugged laptops designed for ultimate versatility, durability and reliability in harsh conditions.
• The LT355 offers the option for an embedded NVIDIA RTX™ graphics card; Embedded MXM GPU with Embedded NVIDIA RTX™ A1000 or A2000 MXM.
• Military Standard Rugged – IP65-rated for water and dust resistance; MIL-STD-810G/H for shock and vibration protection; and HERO (Hazard of Electromagnetic Radiation to Ordnance) tested.
• The DT Research LT355 rugged laptop is immediately available from DT Research’s authorized resellers and partners, and will be featured at the DSEI 2023 show in London September 12 – 15 in stand H8-467.

• Our findings, published today in the Astrophysical Journal, detail the detection of pulsed radio emission from this star, called WISE J0623.
• Despite being roughly the same size as Jupiter, this dwarf star has a magnetic field much more powerful than our Sun’s.

Making waves with radio stars

• With over 100 billion stars in our Milky Way galaxy, it might surprise you astronomers have detected radio waves from fewer than 1,000 of them.
• Most of the detections of stars with radio telescopes over the past few decades have been flares from highly active stars or energetic bursts from the interaction of binary (two) star systems.
• These cool brown dwarfs can’t sustain the levels of atmospheric activity that generates radio emission in hotter stars, making stars like WISE J0623 harder for radio astronomers to find.

How did we find the coolest radio star?

• The telescope can see large regions of the sky in a single observation and has already surveyed nearly 90% of it.
• So how do we tell which of these millions of sources are radio stars?
• By selecting only highly circularly polarised radio sources from an earlier survey of the sky, we found WISE J0623.

What does this discovery mean?

• Previous research has shown that radio emission detected from other cool brown dwarfs was tied to their magnetic fields and generally repeated at the same rate as the star rotates.
• To investigate this we did follow-up observations with CSIRO’s Australian Telescope Compact Array, and with the MeerKAT telescope operated by the South African Radio Astronomy Observatory.
• WISE J0623 is the coolest brown dwarf detected via radio waves and is the first case of persistent radio pulsations.

• The global energy harvesting market was valued at $3.5 billion in 2022 and is expected to reach $6.5 billion by the end of 2028, growing at a CAGR of 11.4%.
• The energy harvesting market refers to the industry involved in manufacturing energy harvesting devices.
• The energy harvesting sources include the following: thermal, solar and photovoltaic; vibration, displacement and mechanical; radiation and electromagnetic; and chemical energy.
• Energy harvesting, also known as energy scavenging or power harvesting, is a growing market for the conversion of waste energy, i.e., energy that is otherwise wasted in the form of heat.