UC San Diego Researchers Shed Light on Formation of Black Holes and Galaxies

Supermassive Black Holes – Captivating

Latest discoveries have heighted the understanding of how powerful winds generated by supermassive black holes make an impact on the growth of a galaxy. Professor Shelley Wright of University of California San Diego commented that supermassive black holes are captivating and understanding why and how galaxies seem to be affected by their supermassive black holes tends to be an outstanding puzzle in their formation.

 The researchers of University of California San Diego in the Department of Physics have provided some insight on the formation of supermassive black holes and galaxies. Their discoveries had been published in issue of Astrophysical Journal of December 20, 2017 which had directly influenced the theoretical work on supermassive black holes together with the galaxies’ formation and evolution through cosmic time. Moreover, their work had also provided vital new clues on how black holes influenced the star formation history of galaxies.

 The bright vigorous supermassive black holes are called `quasars’. The researchers, Wright and Vayner, leading and serving as first author on the paper titled `Galactic-scale Feedback Observed in the 3C 298 Quasar Host Galaxy’, had examined the energetics surrounding the powerful quasar-generated winds. Their measurements had placed the distant supermassive black hole and galaxy named 3C 298 at around 9.3 billion light years away.

Galaxy Mass – Associated with Supermassive Black Hole Mass

Wright had explained that they had studied the supermassive black holes in the early universe wherein they had been actively developing by accreting huge amounts of gaseous material. Though black hole themselves do not tend to emit light, the gaseous material they seem to chew on, is heated to the maximum temperature thus enabling them to be the most luminous objects in the universe’.

The research done by the team according to Wright disclosed that the winds blow out through the complete galaxy and affect the growth of stars. She commented that this is remarkable which the supermassive black hole is capable of impacting stars creating at such large distances. The neighbouring galaxies presently portray that the galaxy mass is strongly associated with the supermassive black hole mass.

 The research of Wright and Vayner specifies that 3C 298 is not within the normal scaling relationship between nearby galaxies and the supermassive black holes which hang about towards their centre. However in the early universe, the study portrays that the 3C 298 galaxy is considered to be 100 times less massive than it tends to be given its behemoth supermassive black hole mass which signifies that the supermassive black hole mass had been established much earlier than the galaxy.

OSIRIS/ALMA

Moreover the potentially the energetics from the quasar had been capable of controlling the development of the galaxy. For research purpose, the UC San Diego researchers used several state-of-the-art astronomical facilities, the first being the W. M. Keck Observatory instrument OSIRIS with its advanced optics (AO) system.

The W. M. Keck Observatory telescopes are said to be most scientifically productive on the Earth where the two – 10 meter optical/infrared telescopes on the summit of Maunakea towards the Island of Hawaii tends to feature a suite of advanced instruments comprising of imagers, multi-object spectrographs, integral-field spectrometers, high-resolution spectrographs together with world-leading laser guide star adaptive optics systems.

This enabled ground-based telescope to attain higher quality images by rectifying the blurring that is due to the atmosphere of the Earth and the resulting images seemed to be good like those obtained from space. The second main facility had been the Atacama large Millimeter/submillimeter Array which is known as `ALMA’.

 This is an international observatory in Chile which is capable of detecting millimetre wavelengths utilising up to 66 antennae to accomplish high resolution images of the gas surrounding the quasar. According to Vayner, the most appealing part of researching this galaxy has been in putting together the entire data from various wavelengths and techniques.

Nature of Galaxy/Formation of Supermassive Black Hole 

Each new dataset obtained on this galaxy provided a question and helped in putting some of the pieces of the puzzle together. But at the same time it also developed new questions regarding the nature of galaxy as well as the formation of the supermassiveblack holes.

 In agreement Wright had also commented that the data sets had been tremendously gorgeous from both Keck Observatory as well as ALMA providing immense new information regarding the universe. These discoveries had been the initial results from a bigger survey of distant quasars together with their energetics’ influence on the formation of star and galaxy development.

Vayner along with his team will carry on the developing results on more distant quasars utilising the new facilities as well as the potentials from Keck Observatory and ALMA. The graduate program of the Department of Physics in the Division of Physical Sciences at UC San Diego has been listed #16 as per the U.S. News and World Report ranking. The first students to be enrolled at UC San Diego in 1960 had been graduate student in physics.

A Popular Tool to Trace Earth’s Oxygen History Can Give False Positives

Updated Tool – Tracing Oxygen

A latest investigation for researchers tracking the ancient history of oxygen in the atmosphere of the Earth could dampen their discovery thrills. According to the study an updated tool utilised in tracing oxygen on examining ancient rock strata could produce false positive and the wilful consequences could conceal the exciting results.

Ligands the commonly known molecules could bias the results of well-known chemical traced called chromium (Cr) isotope system. This is utilised in testing sedimentary rock layers for clues in relation to atmospheric oxygen levels during epoch while the rocks are being formed. Demonstration have been conducted in the lab by the researchers at the Georgia Institute of Technology that several ligands could have developed a signal akin to the molecular oxygen.

According to one of the lead authors of the research, Chris Reinhard, there are some geographical locations together with ancient situations wherein measurable signals could have been created which could have no connection with how much oxygen was everywhere. However, the new research could impact how some recent discoveries are evaluated with false positives, but that does not mean the tool is not useful.

Chromium Isotope System – Great Indicator of Atmospheric Oxygen Levels

Yuanzhi Tang, co-leading the study commented that they are not attempting to revolutionize the way the tool is viewed as false positives. It is about comprehending its possible limitation in discerning the use of it in particular cases.

The team’s results had been published in a study on November 17, 2017, in the journal Nature Communications, by Tang and Reinhard, assistant professors of biogeochemistry in Georgia Tech’s School of Earth and Atmospheric Sciences. Financial support had been provided by the NASA Astrobiology Institute, the NASA Exobiology program together with the Agouron Institute.

Tang had commented that on a global level, the chromium isotope system is yet a great indicator of atmospheric oxygen levels through the ages and the issue exposed in the lab tends to be more local with isolated samples, particularly during eras when there was not much atmospheric oxygen.

Ligands, deprived of a dominant oxygen presence tend to make a great reactive substitute as demonstrated by the researchers in reaction with chromium. Just like oxygen, ligands are inclined to strongly attract electron pairs, which is what symbolizes them as chemical group.

Earth – Massive Chemical Laboratory

Similar to reactions with oxygen, reactions with ligands permits metals such as chromium to move around with ease in the world. Researchers, in this instance, had been concerned in organic ligands, which tend to contain carbon.

They had been more suitable to counterpart the mobility effect of oxygen on chromium which made it end up as the signals in sedimentary rock that the scientists presently looked for as a sign of ancient atmospheric oxygen.

The chromium isotope system tends to work thus followed by how organic ligands tend to make for false positives – The Earth, a massive chemical laboratory performing reactions in conditions tend to differ from arctic cold to volcanic heat, thus from crushing ocean depths to no-pressure upper atmospheres. Waves and winds tend to sweep about the materials like turbulent conveyor belts, dropping some in sediments which later on turn to stone.

Earth Lacking O2

Chemical reaction that had been discovered in the research, including manganese oxide handing off oxygen to chromium could be somewhat like adding pontoons to chromium compounds. Earth’s atmosphere, for billions of years had been almost lacking of O2 though after oxygen had begun growing particularly in the last 800 million years, became the overbearing oxidizer.

 Characteristics of chromium deposits in ancient layers of rock had become a great indicator of how much O2 was in the atmosphere. Presently researchers tend to test deep rock layer samples for the link between two chromium isotopes, 53Cr, by far the most common Cr isotope while 53Cr to acquire a read on oxygen existence across geological eras.

According to Reinhard, `you powder the rock up, dissolve it with acid and then measure the ratio of 53Cr to 52Cr in the material by utilising mass spectrometry. It is the ratio which matters and will be controlled by a range of complex processes though generally speaking, elevated 53Cr in ocean sediment rock tends to indicate oxygen in the atmosphere’.

Cr Isotopes - Staple

Cr isotopes are said to be stable and do not go through radioactive decay and hence the system does not function the way radiocarbon dating does that depend on the decay of carbon 14. Tang’s team had portrayed in the lab with a small assortment of organic ligands that reaction of chromium with ligands had led to 53Cr/52Cr signals which had nearly represented those stemming from oxygen-chromium reactions.

Tang had mentioned that ligands tend to have the potential of mobilizing chromium also. Ligands in fact could be a significant factor in controlling chromium isotope signals in certain rock records. Organic ligands had probably been around much before the atmosphere of the Earth had been filled up with O2. Presently hundreds of millions of years thereafter, the reactions took place, and it is basically impossible to find out if oxygen or ligands had been at work.

Puzzling patches in Earth’s interior billions of years in the making, Stanford researchers find

Scientific Anomaly – Insights to Deep Processes of Earth

According to Stanford researchers, chemical reaction with ancient seawater and iron in mantle over eons of the Earth illuminates the formation of mysterious blobs in the interior of the planet which tends to damp down passing seismic waves.

Scientists have been confused for decades, with these thin patches of dense rock which have been placed around 1,800 miles below the surface of the Earth, just above the core-mantle boundary which seems to isolate the molten metal heart of the planet from its rocky shell. They tend to be prominent from their surroundings since the seismic waves created by earthquakes tend to slow down by a tenth to a third of their usual speed when they sweep across.

These dampening zones, apart from being a scientific anomaly, could also offer insights in the other deep processes of the Earth according to research leader, Wendy Mao, an associate professor of geological sciences at School of Earth, Energy & Environmental Sciences of Stanford.

The information regarding the regions considered as ultra-low velocity zones or ULVZs takes place at the core-mantle boundary tends to be interesting since it recommends that the core and mantle of the Earth tends to interrelate to a much greater extent than had been earlier valued.

ULVZs – Origins of Molten Plumes 

According to Mao there is evidence that ULVZs are the origins of molten plumes which tend to feed volcanoes towards the surface and hence ULVZs could indicate a considerable amount of cycling between the core, mantle and surface of the Earth than speculated. The composite as well as the origins of the zones tend to remain a unknown owing to their extreme depths.

 However in the latest researcher published online in the journal Nature, which is an international team of researchers headed by Mao, have provided a new theory explaining how they tend to be formed. The device which has been proposed by them is established on their latest discovery of a novel kind of oxygen-rich iron compound which is inclined to form spontaneously in great heat and pressure, conditions which are present in the lowermost mantle region of the Earth.

Mao’s team while experimenting in the lab at Argonne National Laboratory in Illinois, had compressed slivers of iron foil suspended in pure water to around 90 gigapascals or about 900,000 times the pressure at sea level laser heating them to 3,000-4,000 degrees Fahrenheit.

Super-Oxygenated Iron 

The consequence of this is a super-oxygenated type of iron which is packed with around a third more oxygen molecule than the most oxygen rich oxides which tend to occur beneath the surface conditions. The team also portrayed that their compound shares several of the seismic waves dampening properties shown by the low velocity zones.

Jin Liu, study first author, a postdoctoral researcher in the lab of Mao stated that the low sound speeds calculated for compound tend to match precisely to what was observed seismically in ULVZs. Moreover, the oxygen-rich iron created by the team in the lab had the tendency to form easily at the core-mantle boundary.

Mao commented that this reaction needed only iron and water and as long as one has these components and the accurate temperature together with pressure conditions, this compound tend to form.

These eerie space ‘sounds’ recorded by NASA are creepy enough to make your skin crawl

NASA – Release of Set of Eerie Recordings of Sound from Space

Sky-high to the pits of our universe, magnanimous spacecraft tend to journey the universe, snapping images of astronomic wonders and some of the spacecraft tend to have instruments, with the potential of capturing radio emissions. When the scientists have the possibility of changing these to sound waves the consequences seem to be strange to hear.

NASA has released a set of eerie recordings of sound from space wherein the set of auto files can be accessed through SoundCloud. From the space agency a statement read thus `Soaring to the depths of our universe, gallant spacecraft roam the cosmos, snapping images of celestial wonders. Some spaceships have devices capable of capturing radio emissions. When scientists alter these to sound waves, the results are eerie to hear.

Space scientists at NASA at times tend to take signals from beyond the mortal realm of human senses inclusive of radio waves, plasma waves as well as magnetic fields converting them into audio tracks. This smart hack is known as data sonification which helps the researchers `hear’ what tends to go on with their far-flung spacecraft around planets, comets, moons together with the other locations. The consequences often tend to be ear-splitting though at times the audio seems to be scary.

Accumulation of Out-Space Sounds 

 

The space agency at NASA had mentioned in a release that they have put together an accumulation of 22 outer-space sounds elusive `sounds’ of howling planets and whistling helium which is sure to make your skin crawl. The following are some of the spookiest tract and what they tend to represent:
Juno Crossing Jupiter’s Bow Shock

The First Juno Crossing Jupiter’s Bow Shock is said to be the sound of the spacecraft of NASA moving across the gas giant’s magnetic field where the whistling sound tends to turn abruptly into a deeper boom as the Juno passes from an atmosphere controlled by solar wind to the magnetosphere of Jupiter. Juno of NASA searched around Jupiter every few weeks at a speed of around 130,000 mph working through all types of invisible fields in the progression.

It is said that one of the toughest undetected signals encountered by the robot was Jupiter’s bow shock, the point wherein the magnetic field of the planet pushes back against the howling wind of incoming particles from the sun giving rise to something similar to a sonic boom. The said audio is considered to be about two hours’ substance of electric field signal compressed into few seconds which seems unnerving.

Stardust Passing Comet Tempel 1

It is a recording of a comet flyby in 2011. The Stardust spacecraft of NASA had been bombarded with dust particles from the comet and the is what can be heard in the recording. The spacecraft had been hit by about 5,000 bits of rock, ice and dust, over a period of 11 minutes.

It is said to be one of the few true audio-like recordings from space wherein the sound is the result of the Stardust spacecraft passing through the dust of comet Tempel 1, ringing the body of the robot with debris.

Cassini Saturn Radio Emissions # 1 

The nuclear-powered Cassini spacecraft of NASA had spent 13 years traveling around Saturn and its system of possibly habitable moons. The Radio Emission of Saturn had been recorded with the Cassini spacecraft when it had recently plunged in the atmosphere of the planet bringing about the long mission to an end.

Saturn is said to be a source of intense radio emission which are related to the auroras of the planet near its poles. The said audio track which tends to be scary is actually radio waves that are emanated by the giant planet through an incidence similar to the once which tends to cause auroras on Earth.

NASA’s Polar Satellite – Plasmaspheric Hiss 

The Earth is said to be encircled in plasma, hot, ionized constituent parts created by sunlight crashing in the atmosphere. The Polar mission of NASA that was launched in 1996 had recorded this breath-like hiss of the plasma when it had orbited the planet.

Out beyond the plasmasphere, where the plasma tend to be shaky and comparatively warm, whistler mode waves seem to produce mostly rising chirps similar to a flock of noisy birds and this kind of wave is known as chorus. The same is created when electrons tend to be pushed towards the night area of the Earth which in some instances could be the result of magnetic reconnections.

It could be a dynamic explosion of jumbled magnetic field lines towards the dark area of the Earth. They tend to interact with particles in the plasma, imparting their energy, creating a exclusive rising tone when these low energy electrons hit the plasma.

Jupiter’s Largest Moon Ganymede – Beware 

NASA has not mentioned which spacecraft had recorded these weird radio emissions from the largest moon Ganymede of Jupiter though there was a possibility of the Galileo spacecraft that had orbited the system for around eight years. Irrespective of what the case may be, changing the data into audio tends to make it sound like screams trying to break through from an unearthly plane.

Mystery of the 230 Foot Long Killer Whale Geoglyph Found

Credit: Johny Isla

Lost Geoglyph – Representation of a Killer Whale

 
A long lost geoglyph has been discovered by archaeologist that has been carved in the remote Palpa region of southern Peru in the Peruvian hillside. Palpa is situated near the province of Nazca – home to the extensive region of ‘Nazca Lines’, drawn by the Nazca people between 100 BC and AD 800.

This amazing representation of a killer whale extents more than 200 feet and is presumed to date back over 2,000 years, thus making it one of the oldest than those of the famous Nazca Lines which is in close proximity. According to experts the people who had once inhabited the region considered the orca as a powerful marine deity and the said geoglyph could be among the ancient in the region.

They state that the killer whale was probably created by removal of layer of stones along the landscape outlining its figure. Though the method has been similar to the one utilised by the Nazca culture, the researchers state that there are variations between the two, signifying that the Palpa orca tends to be much older. The eyes of the orca together with the other areas of the design are said to be made by piling the stones.
 

Location & Size - Not Defined

 
According to the researchers, this had been a trademark of the Paracas culture that had inhabited the region from 800 BC to 200 BC. The Paracas culture as per the Bradshaw Foundation was an Andean society well-known to have extensive information of irrigation and water management.

The people of this ancient period, beside the remarkable geoglyphs, also made incredible textiles. The orca geoglyph had been located by a team of German archaeologists in the 1960s though for decades thereafter, was considered lost as per the Bradshaw Foundation.

As per the records, few traces of it prevailed though it was eventually located once again due to efforts led by Johny Isla, head of the Ica branch of the Ministry of Culture in Ica Province of Peru. The orca engraving measuring 230-foot long had been identified in the Palpa region of southern Peru.

As per the reports of Live Science, at first, the team made an effort to locate it by scouring Google Earth but its location as well as size had not been well defined. Johny Isla has mentioned in an email to Live Science, that the location and size of the orca geoglyph have not been well-described in the catalog.
 

Disappearing Due to Erosion

 
According to Live Science, the team had come back to this area in order to re-establish and clean the geoglyph. Ultimately in January 2015, the archaeologist decided to venture on foot and located it after several months of searching.

The immense orca drawing before restoration was disappearing due to erosion over a period of time. Being craved on a slope it become prone to damage than those figures which are in flat areas like those of the Nazca Pampa according to Isla.

The experts have now warned that the freshly revived site is said to be in danger of `land traffickers’ who have hazarded their claims and have threaten to build on the land.

Scientists Just Discovered Our First Known Interstellar Visitor And It’s Pretty Weird

First Known Interstellar Object – Solar System

Scientists have been working on the Pan-STARRS (Panoramic Survey Telescope and Rapid Response System) observatory at Haleakala, Hawaii just over a month back and had glimpses of something quite extraordinary, the first known interstellar object which had passed through the solar system.

They had distinguished observations together with details with the object for the past month and presently known as 11.2016 U1 `OUMUAMUA’, it seems to be the first object of this type. The `I’ signifies its interstellar origin – ISO. The interstellar `Oumuamua embarked in the solar system as though it had fallen from above, closing to within 0.25 AU from the sun which places it between the orbit of the sun and Mercury.

 However, there had been no clue of a tail as `Oumuamua' came near. The interstellar during its initial approach from above the solar system had been moving at a solid 15.8 miles per second – 25.5km/s and had bottomed out under the solar system after the gravity of the sun had pulled it in a different orbit. It is now on its way back out of the solar system on an altered route at an even higher speed of 44km/s.
 

Developing Follow-Up Strategy

 
Onumuamua – interstellar, is said to be quickly disappearing as it heads out of the solar system receding from the Sun as well as the Earth and receiving new observations quickly seems to be very vital. The IfA team comprising of those who had discovered 1l had prepared to follow up solar system discoveries quickly from Pan-STARRS, operated by the IfA, funded by NASA, according to Karen Meech, astronomer leading the investigative team who commented that they were capable of developing rapidly a follow-up strategy on a very short timescale.

It was exciting to think that the brief visit by Oumuamua had given them the opportunity to do the first representation of a sample from another solar system. Established on its observed characteristics, `Oumuamua is roughly the shape of a cigar with two of its axes around 80 meters across and the third 800 meters long. Its trail together with the speed recommends that it is not an ejected fragment of our own solar system at any earlier stage of its development.

 

Insight of the Cosmos

 
The research team tends to think that it is a distant prospect though this possibility could not be totally ruled out. They have speculated in fact that its encounter with our sun could have been the first instance interstellar `Oumuamua had encountered another star.

Though brief as it could have been, the complete encounter tends to remind us of the classic sci-fi book, `Rendezvous with Rama’ of Arthur C. Clarke wherein a massive cylindrical spacecraft on a quick approach in our own solar system had been explored by humans before it had continued on its journey to the Large Magellanic Cloud.

However, while we will not be seeing `Oumuamua’ again, the brief visit of the interstellar to our solar system has somewhat provided some insight of the cosmos to some extent.

Archaeologists Uncover Rare 2,000-Year-Old Sundial During Roman Theatre Excavation

Undamaged Sundial Discovered – Interamna Lirenas – Italy

During an excavation of a roofed theatre in the roman town of Interamna Lirenas, in the vicinity of Monte Cassino, in Italy, a 2,000 year old inscribed sundial has been discovered which is said to be one of the only known artefact to have survived.

 The sundial has not only survived undamaged for over two millennia but its presence of two Latin texts could indicate that researchers from the University of Cambridge have made it possible to assemble accurate information regarding the person who had commissioned it.

The students of the Faculty of Classics had located the sundial lying face down while they had been excavating the front of one of the entrances of the theatre along a secondary street. The sundial could possibly be left behind during that time when the theatre as well as the town had been rummaged for building material at the time of the Medieval to post-Medieval era. It may not have belonged to the theatre though could be removed from a noticeable spot more likely from the top of a pillar in the nearby setting.

A lecturer at the Facultty of Classics at Cambridge and a Colleague of Gonville & Caius College, Dr Alessandro Launaro, mentioned that `less than a hundred specimens of this particular type of sundial have survived and of those only a handful tends to bear any kind of inscription and so this really is a special discovery.
 

Numerous Contemplations

 
He further added that they have not only been capable of identifying the individual who had custom-made the sundial but have also been capable of determining the specific public office he held with regards to the probable date of the inscription.

Highly featured towards the base, is the name of M(arcus) NOVIUS M(arci) F(ilius) TUBULA [Marcus Novius Tubula, son of Marcus] while the engravings on the curved rim of the dial surface record that he held the office of TR(ibunus) PL(ebis) [Plebeian Tribune] and had paid for the sundial D(e) S(ua) PEC(unia) with his own cash. It is said that the nomen Novius had been quite common in Central Italy while the cognomen Tubula (literally `small trumpet), on the other hand is verified at Interamna Lirenas.

What is more appealing is the public office Tubula held with regards to the likely date of the inscription. Numerous contemplations regarding the name of the individual together with the lettering style of the inscription of the sundial placed comfortably during (mid 1st c. BC onwards) wherein the inhabitants of Interamna, had been granted by then, full Roman citizenship.
 

Carved From Limestone

 
Launaro stated `that being the case, Marcus Novius tubal, coming from Interamna Lirenas could be a hitherto unknown Plebeian Tribune of Rome and the sundial could have represented his method of celebrating his election in his own hometown.

 The sundial carved from a limestone block of 54 x 35 x 25 cm, tends to feature a concave face carved with 11 hour lines, (defining the twelve horae of daylight) intersecting three days curves (providing the indication of the season considering the time of the winter solstice, equinox and summer solstice).

Though the iron gnomon (the needle forming the shadow) seems to be lost, some of it tends to be present below the surviving lead fixing and this type of spherical sundial had been comparatively common during the Roman period which was called hemicyclium.

 Launaro further added that though the recent archaeological fieldwork has profoundly affected our understanding of Interamna Lirenas, dispelling long-held views with regards to its precocious decline and considerable marginality, this was not a town of remarkable prestige or notable influence.
 

Informative Case-Study

 
He stated that it remained an average, middle-sized settlement and this is precisely what makes it a potentially very informative case study regarding conditions in the majority of Roman cities in Italy during that time. In this regard, the discovery of the inscribed sundial tends to give some insight on the place Interamna Lirenas occupied in the broader network of political relationship all over Rome, Italy as well as it was also a more general indicator of the amount of involvement in the affairs of Rome where individual coming from this as well as the other comparatively secondary communities could aspire to.

New evidences regarding important aspects of the Roman civilization, emphasizing on the high levels of connectivity together with integration (political, social, economic and cultural) have been adding up with the on-going archaeological project at Interamna Lirenas, which it tends to feature.

Headed by Dr Launaro (Gonville & Caius College) together with Professor Martin Millett (Fitzwilliam College), both from the Faculty of classics, together in partnership with Dr Giovanna Rita Bellini of the Italian Soprintendenza Archeologia, Belle Arti e Paesaggio per le Province di Frosinone, Latina e Rieti, the 2017 excavation is part of an enduring relationship with the British School at Rome and the Comune of Pignataro Interamna which has profited from the generous aid of the Isaac Newton Trust as well as Mr Antonia Silvestro Evangelista