Black hole gobbles up neutron star, causing ripples in space and time
In the same decade when gravitational waves and a neutron star merger have been observed, astronomers have now observed what they believe to be the first detection of a black hole swallowing a neutron star.
Last Wednesday, gravitational wave detectors in Italy and the US, called LIGO and Virgo, detected telltale ripples in space and time, traced to an event that happened 8,550 million trillion kilometers away from Earth.
Astronomers are analyzing the data from the detection to confirm the size of the two objects that came together to form such cataclysmic ripples, but the event is likely a black hole eating a neutron star.
"About 900 million years ago, this black hole ate a very dense star, known as a neutron star, like Pac-man -- possibly snuffing out the star instantly," said Susan Scott, leader of the General Relativity Theory and Data Analysis Group at Australian National University and chief investigator with the ARC Centre of Excellence for Gravitational Wave Discovery. "The ANU SkyMapper Telescope responded to the detection alert and scanned the entire likely region of space where the event occurred, but we've not found any visual confirmation."
Essentially, black holes and neutron stars are the leftovers after stars die.
Neutron stars are the smallest in the universe, the remnants of supernovae. Their diameters are comparable to the size of a city like Chicago or Atlanta, but they are incredibly dense, with masses bigger than that of our sun.
When massive stars collapse at the end of their lives, they form an area of accelerating gravity so strong that nothing, including light, can escape it.
Like the other groundbreaking detections this decade, this new detection could provide more crucial evidence for previously unseen events that occur in space.
"We have always thought that there should be binary systems of a black hole and a neutron star circling each other out in space, so if this event is confirmed, it would be the first evidence that such systems do actually exist, and that some of them are spiraling closer and closer and eventually smashing together," Scott said.
If the neutron star is not much smaller in mass than the black hole, the astronomers would expect more orbits to bring them closer together. This would shred the neutron star, creating electromagnetic signals that can be detected, Scott said. The signal would tell the astronomers about the properties of the star, hinting at their mysterious composition.
But if the masses of the two objects differ, the neutron star would likely be swallowed whole and not emit radiation. Because there hasn't been a signal in the area where the event occurred, the researchers believe this is the scenario that occurred.
Astronomers want to learn the masses of the two objects. An object greater than five times the mass of the sun is considered a black hole. If it's less than three times the mass of the sun, it's a neutron star.
One potential small possibility is that the smaller object could be a very light black hole, Scott said, which would still be an exciting consolation prize.
"We are not aware of any black holes in the universe with masses less than about five solar masses," Scott said. "This would raise many new questions such as, 'how does such a light black hole form?'"
If the detection of the black hole swallowing the neutron star is confirmed, that would complete the detectors' trifecta this decade, including gravitational waves and neutron star collisions.
Gravitational waves are ripples in space and time. Neutron star collisions release gravitational waves, light and heavy elements like gold.
Earlier this year after the gravitational wave detectors were turned on in April, scientists believe they may have detected the never-before-seen collision of a neutron star and a black hole, a collision between two neutron stars and three potential black hole mergers. The detectors' observations are being regarded as candidates until further data can confirm them.
If this trifecta is complete, the researchers want to detect more systems, including black holes and neutron stars merging.
"We can better estimate the population size of these systems in the universe and also better understand how these systems 'get together' in the first place," Scott said. "On the extended wish list we would soon hope to have a supernova which goes off somewhere close so that we can capture the expected gravitational waves from this type of event and better model the supernova process."
The detection teams are also working on a way to detect the result of two neutron stars that briefly create a bigger neutron star when they collide. It's possible that this bigger neutron star would be short-lived, but any detection from it could inform the astronomers about the collision process for neutron stars and their structure.
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Copied from the Book; " Reality as Myth " by Onyeji Nnaji The beauty of the discovering of the Radar Rivers and their channels is that it disproves the western hegemonic claim of the Euphrates valley being the position of the birth of the great river, all the points that opposed their claims notwithstanding. Even God himself was very perfect in His creation by placing them in their positions, hierarchically, according to their birth. The first river that flowed located the Havilah land where there are good quality gold, bdellium and fine onyx stones. Pison was the oldest of the rivers and it flowed through the land of the southern Africa. The second river flowed northward to Ethiopia. It was when Africa had been overtaken by virtue of her proximity to the Great Water that other parts of the world began to encounter the remaining river; remarkable with Hiddekel. Subscribe to ajuede.com to be updated on our posts on dailies. The major problem towards
STRICTLY FOR COUPLES … You will know that the man is the head while you are his neck. As such, you direct his focus and make him fixative Our series include the following : * Show him what he looks out for from other women * Teach him like he knows nothing * Learn to play naked games with your husband * Learn to package yourself * Learn to work on your husband M y neighbour had v owed never to let any girl survive as a salesgirl in my shop. This thing has happened for over three times. Each time we brought a new salesgirl, the girl would stay for two or three months; and suddenly she would end her contract with us. In all these, my husband did not know. So, being that the girls usually stole money and other items, the reason for their departure became genuine, thus: they ran away to avoid being punished for their actions. But behind this, the underlying truth is that the girls had been embarrassed by my neighbour who would warn them to leave her loosed husband. Re
Strictly for Couples T he biggest risk every marriage faces is what I call the retiring time. There is actually no retiring time for marriage as the union directly speaks of itself. But many marriages normally do have certain time in their history when the couples begin to ware away from the other like a baked clod-and-pebble. By this time the parties find it difficult to retrace the path that once brought them together. You may have heard “I don’t think I sought your hands in marriage with clear eyes”. Next, they may say that the other used means on them. It is not always so, even when some people believe that someone could use means as a wooing instrument. Some of the causes of such situations have been discussed in the series 1 through 3. But when someone does not have any of these problems discussed in the series, then it is simply that such a wife needs to make herself look relatively younger that her age to enforce attraction on her husband. To do this one need
Copied from the book, Reality as Myths by Onyeji Nnaji T he world of the Bantu travellers shows the walls of the migration that recorded the highest population among the African settlement. Originating from the largest population among the four races that settled in the east before time, all Bantu travellers were pygmies; for that was the nature of the Umudiala, the generation that gave birth to them. Bantu migration was rated the third earliest migration of the Negro race from the east. In this regard, all their movement had involved great population of people compared to the number of people involved in the two earlier populations that gave birth to Ethiopia, Nubia and Egypt: the Walker Traveller, and the Race of Anu. Bantu population as we have identified in the third chapter above outweighs the rest of the population of the ancient fathers that founded many of the nations of antiquity mentioned earlier. Discussing them in beat will pose a little challenge since
T he name Nkalaha is a coinage which stands for a people occupying a geographical land and regional setting in the eastern part of Nigeria. It is a coinage which attempts to explain the direction of movement and adventure of the men who founded the community in the 15th century AD. According to oral sources and some documentation about this community, some of these men were believed to have traveled from Ida, old Benue state of Nigeria to inhabit the land. These men had traveled on different days to locate the place. Onojah who originally founded the land was said to have been in a deep search for a place of safety as he was besieged by a fate that appeared to make him somewhat incompatible with his own people. Other works bothering on Nkalaha are stated below. Touch any of the topics and read them to increase your understanding of your home. Make comments where necessary. The History of Nkalaha language Myth and the Nkalaha world The negative effects of politics in Nkalah
The Mystery of Number, “Five” in the Igbo Cosmology. From: Aspects of the Ancient African Metaphysics; Chapter: Seven; Topic: Igbo Geometries and the Metaphysics of Numbers. Author: Onyeji Nnaji. I n the Igbo cosmology, the word Isee is a definite symbolic word as revealed through the Igbo language and culture. A human being has five fingers, five toes. The hands and feet are fundamentals to the survival in life as they are necessary in ensuring that man moves to places where he gets food and grapples on the food to sustain his life. To this view, the rhetoric that binds vocatives in the form of incantation (anchoring on the heart-lock: four ) and the concomitant reprisal in the manner of affirmation that holds the human life bind to his original spiritual person, therefore defining existence and essences are unified by the corresponding echo: Isee!!!!! Therefore it stands that anytime a prayer is said in the Igbo land, the attendants who would want the fulfillment of the
There are four generations…, and the fourth generation, which is the most exalted, is kingless and perfect. These people will enter the holy place of their Father and they will reside in rest … They are kings. They are the immortal within the mortal ( The Nag Hammadi, 219 ) Also read Nsukka Civilization: The Peopling of Ancient Nsukka One of the African homes that colonialism has completely deformed beyond certain level of recognition is Nsukka. Colonialism apart, the most affecting factor to the survival of the meaning which the rich cultural enclave, Nsukka, carries will best be blamed on postcolonial political structure. The biggest harm all these have against Nsukka as a people is that they rubbed her of the meaning of her name; their place of origin; how their fathers managed to come into their present abodes and who their ancestors were. A profound understanding of the excerpt above will open the door towards deciphering the meaning and origin of the people call
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