Typically when scientists make a measurement, they know exactly what kind of measurement they're making, and their purpose is to obtain a measurement outcome. But in an "unrecorded measurement," both the type of measurement and the measurement outcome are unknown.
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Type II and type III bursts are generated, via the plasma emission mechanism, when beams of suprathermal electrons interact with the ambient plasma generating radio emissions at the plasma frequency fp (the fundamental emission) or at its second harmonic 2fp (the harmonic emission) [see also previous CESRA highlights here and [...]... Read more »
V. Krupar et al. (2016) An Analysis of Interplanetary Solar Radio Emissions Associated with a Coronal Mass Ejection. Astrophys. J. Lett., 823, L5. info:/
Spinning black holes are capable of complex quantum information processes encoded in the X-ray photons. ... Read more »
Ovidiu Racorean. (2016) Photonic Bell states creation around rotating black holes. ArXiv. arXiv: 1608.06822v1
The solar corona is a well known site for particle acceleration – examples range from spectacular large flares to the hard-to-observe nanoflares that are now a leading candidate for coronal heating.... Read more »
Prasad Subramanian and Claude Mercier. (2016) High resolution observations of radio noise storms in the solar corona . Astronomy . info:/
The nature of the solar flare sub-THz emission (Kaufmann, 2012) with a positive spectral slope at 200-400 GHz is still not clear..... Read more »
Yuriy Tsap et al.*. (2016) On the thermal nature of 140 GHz emission from the 4 July 2012 solar flare. Advances in Space Research, 2016, 57, 1449. info:/
Impulsive 30 THz continuum bursts have been recently observed in solar flares, utilizing small telescopes with a unique and relatively simple optical setup concept (Kaufmann et al. 2015). The most intense burst was observed together with a GOES X2 class event on October 27, 2014, also detected at two sub-THz [...]... Read more »
Pierre Kaufmann et al. (2016) Bright 30 THz impulsive solar bursts . Journal of Geophys. Res. info:/
Measuring altitude using atomic clocks seems like a crazy idea, but it’s already being done at RIKEN in Japan.... Read more »
Takano, T., Takamoto, M., Ushijima, I., Ohmae, N., Akatsuka, T., Yamaguchi, A., Kuroishi, Y., Munekane, H., Miyahara, B., & Katori, H. (2016) Geopotential measurements with synchronously linked optical lattice clocks. Nature Photonics. DOI: 10.1038/nphoton.2016.159
The goblin shark is a weird deep-sea creature first discovered off the coast of Japan in 1898. It has a ghoulish appearance, thanks to jaws that can stretch well away from the rest of its head. Scientists have assumed the goblin shark uses this trick to eat—but until recently, no one had actually watched one catching prey in the wild.
In 2008 and 2011, divers working with the Japanese television broadcaster NHK managed to capture two goblin sharks (Mitsukurina owstoni). Before rerele........ Read more »
Nakaya, K., Tomita, T., Suda, K., Sato, K., Ogimoto, K., Chappell, A., Sato, T., Takano, K., & Yuki, Y. (2016) Slingshot feeding of the goblin shark Mitsukurina owstoni (Pisces: Lamniformes: Mitsukurinidae). Scientific Reports, 27786. DOI: 10.1038/srep27786
We discuss the results of recent observations of a solar U-burst harmonic pair in the frequency range 10-70 MHz, performed by the radio telescope UTR-2 ...... Read more »
Dorovskyy et al. (2016) Decameter U-burst Harmonic Pair from a High Loop by Dorovskyy et al. Solar Physics. info:/
Fermi (1949) introduced a fundamental stochastic process to solve the problem of particle energization (heating and/or acceleration) in space and astrophysical plasmas. The initial idea of Fermi with randomly moving scatterers (magnetic clouds), was soon replaced with a spectrum of low amplitude (δΒ/Β... Read more »
by L. Vlahos, T. Pisokas, H. Isliker, V. Tsiolis and A. Anastasiadis. (2016) Particle Acceleration and heating by turbulent reconnection. ApJ. info:/
Deep space missions could increase the chances of cardiovascular diseases, thereby increasing the chances of deaths in astronauts.
NASA’s Apollo program sent 9 manned missions and 24 astronauts above the low Earth orbit (LEO) during decades of 1960s and 1970s. Those missions also included Apollo 11, which was used to take Neil Armstrong and Buzz Aldrin to the moon. However, it appears that such beyond Earth missions........ Read more »
Delp, M., Charvat, J., Limoli, C., Globus, R., & Ghosh, P. (2016) Apollo Lunar Astronauts Show Higher Cardiovascular Disease Mortality: Possible Deep Space Radiation Effects on the Vascular Endothelium. Scientific Reports, 29901. DOI: 10.1038/srep29901
Most of us don't give much thought to drops of liquid that end up outside our drinking glasses. But physicists care a lot about liquid droplets, and study their whole lifespans—from the first splash or drip to the moment a drop disappears.
Liquids that contain three different substances, though, haven't been studied as much. Detlef Lohse, a physicist at the University of Twente in the Netherlands, and his colleagues took a deep dive into one such liquid: ouzo.
Ouzo is a mixture of wate... Read more »
Tan H, Diddens C, Lv P, Kuerten JG, Zhang X, & Lohse D. (2016) Evaporation-triggered microdroplet nucleation and the four life phases of an evaporating Ouzo drop. Proceedings of the National Academy of Sciences of the United States of America. PMID: 27418601
Water churns. Earth moves. Molecules jostle and chemicals mix. Between heaven and hell, a young planet finds itself in full flux. Developing. Forming. Star stuff rains down and forged elements bubble up. Then it happens. It seems as if it’s just another chemical match-up, another reaction in the vast library of possibilities. But it would […]... Read more »
Scharf C, & Cronin L. (2016) Quantifying the origins of life on a planetary scale. Proceedings of the National Academy of Sciences of the United States of America. PMID: 27382156
LHCP2016 is running yet with further analysis on 2015 data by people at CERN. We all have seen the history unfolding since the epochal event on 4 July 2012 where the announcement of the great discovery happened. Since then, also Kibble passed away. What is still there is our need of a deep understanding of the […]... Read more »
Marco Frasca. (2015) A theorem on the Higgs sector of the Standard Model. Eur. Phys. J. Plus (2016) 131: 199. arXiv: 1504.02299v3
Human skin emits light (albeit the glow is extremely weak) and a wide variety of small molecules that may be sometimes "sniffed" by dogs or even other humans. These chemicals tell a story about our health and wellness, things we eat and drink, touch and breathe. Mosquitoes use such emissions to assess our "attractiveness" from indicators such as Indoles (unpleasantly smelling but healthy "inner soil" biomarker) or carbon dioxide (amount of which correlates with the size of the person........ Read more »
Andreoni G, Standoli CE, & Perego P. (2016) Defining Requirements and Related Methods for Designing Sensorized Garments. Sensors (Basel, Switzerland), 16(6). PMID: 27240361
Gao W, Emaminejad S, Nyein HY, Challa S, Chen K, Peck A, Fahad HM, Ota H, Shiraki H, Kiriya D.... (2016) Fully integrated wearable sensor arrays for multiplexed in situ perspiration analysis. Nature, 529(7587), 509-14. PMID: 26819044
Imani S, Bandodkar AJ, Mohan AM, Kumar R, Yu S, Wang J, & Mercier PP. (2016) A wearable chemical-electrophysiological hybrid biosensing system for real-time health and fitness monitoring. Nature communications, 11650. PMID: 27212140
Lee H, Choi TK, Lee YB, Cho HR, Ghaffari R, Wang L, Choi HJ, Chung TD, Lu N, Hyeon T.... (2016) A graphene-based electrochemical device with thermoresponsive microneedles for diabetes monitoring and therapy. Nature nanotechnology, 11(6), 566-72. PMID: 26999482
Panneer Selvam A, Muthukumar S, Kamakoti V, & Prasad S. (2016) A wearable biochemical sensor for monitoring alcohol consumption lifestyle through Ethyl glucuronide (EtG) detection in human sweat. Scientific reports, 23111. PMID: 26996103
One key characteristic of a beautiful scientific theory is the simplicity of the underlying concepts. According to Weinberg, Einstein's theory of gravitation is described in fourteen equations whereas Newton's theory can be expressed in three. Despite the appearance of greater complexity in Einstein's theory, Weinberg finds it more beautiful than Newton's theory because the Einsteinian approach rests on one elegant central principle – the equivalence of gravitation and ........ Read more »
Artist's depiction of the WMAP satellite gathering data to understand the Big Bang. Source: NASA.For decades physicists have been trying to decipher the first moments after the Big Bang. Using very large telescopes, for example, scientists scan the skies and look at how fast galaxies move. Satellites study the relic radiation left from the Big Bang, called the cosmic microwave background radiation. And finally, particle colliders, like the Large Hadron Collider at CERN, allow researchers to smas........ Read more »
Grohs, E., Fuller, G., Kishimoto, C., Paris, M., & Vlasenko, A. (2016) Neutrino energy transport in weak decoupling and big bang nucleosynthesis. Physical Review D, 93(8). DOI: 10.1103/PhysRevD.93.083522
Sometimes at the climax of a Star Trek episode, the captain would yell out "Battle stations!" and send the crew scurrying frantically through the corridors. It wasn't really clear what those battle stations were. Presumably, crew members headed to posts they'd been previously assigned, and this let the whole ship react to the crisis efficiently.
Certain ants respond to a crisis by binding their bodies together into floating rafts. And like the Star Trek crew, they seem to have designat........ Read more »
Avril, A., Purcell, J., & Chapuisat, M. (2016) Ant workers exhibit specialization and memory during raft formation. The Science of Nature, 103(5-6). DOI: 10.1007/s00114-016-1360-5
Just because a snake can't kill you doesn't mean it's slow on the draw. New research shows that harmless snakes strike just as quickly as venomous vipers do. The snakes hurl themselves at their targets so quickly, in fact, that a lesser animal would black out from the acceleration.
Vipers have long been the presumed titleholders for strike speed, explains David Penning, a graduate student in biology at the University of Louisiana at Lafayette. These snakes strike to kill, plunging their v... Read more »
Penning, D., Sawvel, B., & Moon, B. (2016) Debunking the viper's strike: harmless snakes kill a common assumption. Biology Letters, 12(3), 20160011. DOI: 10.1098/rsbl.2016.0011
Climate change will continue to affect future generations, but are our children receiving accurate information about it? A new survey suggests not - here's a look and why and some possible solutions... Read more »
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