{"id":84,"date":"2011-04-21T08:37:06","date_gmt":"2011-04-21T05:37:06","guid":{"rendered":"http:\/\/starburstfound.org\/superwaveblog\/?p=84"},"modified":"2021-11-15T11:55:53","modified_gmt":"2021-11-15T16:55:53","slug":"grb-110328a-first-ever-observation-of-a-newly-formed-quasar","status":"publish","type":"post","link":"https:\/\/starburstfound.org\/superwaveblog\/?p=84","title":{"rendered":"GRB 110328A: First ever observation of a newly formed quasar!"},"content":{"rendered":"
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Nascent Quasar GRB 110328A<\/p><\/div>\n

When a formerly quiescent galactic nucleus is observed by astronomers to suddenly begin radiating high energy emission, it is probably natural for them at first to avoid interpreting the sighting as the birth of a quasar and instead propose something on a far smaller less dramatic scale. \u00a0Knowing very well the psychology of his astronomer peers, Sir Fred Hoyle forsaw a similar sighting downplay in his science fiction story The Inferno<\/em> (1973).<\/em> His story was about astronomers first sighting the explosion of our own galactic nucleus, its sudden activation into the quasar state. \u00a0A passage from his book describes how some members on the astronomical discovery team at first wrongly concluded that what they had discovered was a supernova explosion:<\/p>\n

“Except this supernova does seem unusually bright,” interjected Tom Cook.
\n“Has brightened up still more,” announced Bill Gaynor, who had just come in. “Didn’t go to bed. I stayed up till it rose\u2014in the east, about an hour ago.”
\n“What is it now?”
\n“I’d say about minus eight.” [25 times brighter than Venus]
\nThere was a whistle around the common room.
\n“More like a bloody quasar than a supernova,” muttered someone.
\nA long silence followed this remark. It was broken by Almond. “Which would explain something that’s been worrying the hell out of me.”
\n“What’s that, Dr. Almond?” Gaynor asked, his eyes red with lack of sleep.
\n“Why the position of the thing is so precisely the same as the Galactic center. It’s obvious really, isn’t it? The center of the Galaxy has blown up.” Almond’s deep voice was grave as he made this pronouncement.<\/p><\/blockquote>\n

The Inferno<\/a><\/em>, Sir Fred Hoyle and Geoffrey Hoyle
\npassage quoted in Earth Under Fire<\/a><\/em> by P. LaViolette<\/p>\n

We may be seeing the same sequence of events playing out in real life with the discovery of the source GRB 110328A which may actually prove to be a quasar, the first ever to be seen turning on. \u00a0The initial appearance of this X-ray and gamma ray source was first detected by the Swift telescope on March 28, 2011. \u00a0It was found to be located at the center of a galaxy in the constellation of Draco situated about 3.8 billion light years away (z = 0.35).<\/p>\n

Seeing that the source continued its highly energetic activity even days afterward, astronomers began to realize that what they had been observing was something other than a mere gamma ray burst (GRB). \u00a0Most gamma ray bursts, on the other hand, last from a minute or so to several hours at most. \u00a0But in seeking an alternate interpretation, astronomers have leaned towards the less dramatic and proposed that we are observing a “supermassive black hole” that is in the process of tidally disrupting and consuming a passing star.<\/p>\n

For example,\u00a0on April 14th, after the\u00a0source had been active for over two weeks, astronomers\u00a0Almeida and De Angelis proposed just this in a paper<\/a> they had submitted for publication to Astronomy and Astrophysics<\/em> journal. \u00a0They\u00a0propose that we are seeing a black hole having a mass of ~107<\/sup> solar masses ripping apart and consuming a red giant star of mass 0.5 to 5 solar masses which had happened to orbit too close to it. \u00a0They state that if their theory is correct, we should expect that the intense X-ray emission from GRB 110328A to not last more than a few weeks to a few months, i.e., the time taken for the red giant star’s mass to become completely consumed. \u00a0In fact in their April 14th paper to Astronomy and Astrophysics<\/em>, they state that the emission should be seen to begin to fade within a few days to a few months.<\/p>\n

Now more than a week has passed since the date they posted their paper, so the predicted lower limit of a “few days” has been well exceeded. \u00a0If the source continues its current variable activity after a few months from now, then like Dr. Almond in Hoyle’s novel, astronomers\u00a0will be forced to consider the inevitable, that what we are seeing is more like a “bloody quasar” than the transitory burp of a black hole!<\/p>\n

I predict that GRB 110328A is a quasar and that we just happen to be viewing it at a point in its cycle when it has happened to turn on. \u00a0I would prefer not to call it a supermassive black hole as has become customary in astronomy for the reason that I don’t believe in the existence of black holes. \u00a0I prefer to use the more neutral term galactic core<\/em> or alternatively supermassive mother star<\/em>. \u00a0Here are some facts to consider that favor the interpretation that GRB 110328A is a quasar:<\/p>\n

1) the X-ray emission is coming from the exact center of the host galaxy, hence from its core. \u00a0Similarly, quasars are known to be galactic nuclei in their active state, hence a galactic core observed during its active phase.<\/p>\n

2) the average long-term emission coming from\u00a0GRB 110328A\u00a0is seen to have an intensity in the range of what is observed to come from a quasar. \u00a0That is, quasars typically have X-ray luminosities that range from 1043<\/sup> to 1048<\/sup> ergs\/s whereas Almeida and De Angelis report that this object has an\u00a0average X-ray luminosity of about 2.5 X 1047<\/sup> erg\/s. \u00a0So GRB 110328A is near the upper end of the quasar luminosity range.<\/p>\n

3) Whereas the X-ray luminosity from quasars is observed to erratically vary by many fold over a period of anywhere from hours to weeks, similarly the emission from GRB 110328A has been observed to vary erratically on a timescale of a few hours to a day, very similar to a more rapidly varying quasar.<\/p>\n

4) Like a quasar, GRB 110328A emits synchrotron radio emission. \u00a0Radio emission from this source was reported on April 11th by Brunthaler et al<\/a>.<\/p>\n

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X-ray intensity light curve for source GRB 110328A<\/p><\/div>\n

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X-ray intensity lightcurve for quasar PDS 456.<\/p><\/div>\n

Considering that we may be observing for the first time the onset of a quasar, there are several interesting things that we can learn from GRB 110328A.
\nFirst we can get an idea about the rapidity of the onset of the quasar state. \u00a0The observed event occurred without prior warning and reached maximum intensity within 15 minutes<\/span>. \u00a0I have previously stated that we could expect a similar sneak attack from the core of our own Galaxy. \u00a0(GRB 110328A instead lies several billion light years away. \u00a0So we need not worry about it.)
\nSecond, when it initially turned on, its luminosity was about 20 times greater than the value it attained days later. \u00a0At its initial onset it achieved a luminosity of around 5 X 1048<\/sup> ergs\/s in two peak events separated a day apart. \u00a0Hence in its first days it would have been one of the most luminous quasars in the sky. \u00a0This is very significant. \u00a0For it implies that a first strike from our own galactic core may deliver its most deadly effects in the first day or two, with intensities an order of magnitude greater than what we would later be exposed to.<\/p>\n

We will keep you updated with more as this story unfolds. \u00a0Meanwhile, for those interested about the core explosion phenomenon, click here<\/a>. \u00a0For those who might have doubts that GRB 110328A is an example of a supermassive black hole tidally disrupting a passing star, and who might be interested in learning of an alternative way to conceive of the supermassive objects that form the cores of galaxies,\u00a0click here<\/a>. \u00a0For evidence that the core of our own Galaxy is most likely not a supermassive black hole, but a mother star, visit our subquantum kinetics forum (starburstfound.org\/sqkblog\/<\/a>) and in particular the posting entitled “Evidence Against Black Hole in Galactic Core<\/a>“. \u00a0Further evidence against the black hole theory is discussed in the books\u00a0Subquantum Kinetics<\/a><\/em> and\u00a0Genesis of the Cosmos<\/a><\/em>.<\/p>\n","protected":false},"excerpt":{"rendered":"

When a formerly quiescent galactic nucleus is observed by astronomers to suddenly begin radiating high energy emission, it is probably natural for them at first to avoid interpreting the sighting as the birth of a quasar and instead propose something on a far smaller less dramatic scale. \u00a0Knowing very well \u2026 Continue reading → <\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[3],"tags":[],"_links":{"self":[{"href":"https:\/\/starburstfound.org\/superwaveblog\/index.php?rest_route=\/wp\/v2\/posts\/84"}],"collection":[{"href":"https:\/\/starburstfound.org\/superwaveblog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/starburstfound.org\/superwaveblog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/starburstfound.org\/superwaveblog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/starburstfound.org\/superwaveblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=84"}],"version-history":[{"count":12,"href":"https:\/\/starburstfound.org\/superwaveblog\/index.php?rest_route=\/wp\/v2\/posts\/84\/revisions"}],"predecessor-version":[{"id":398,"href":"https:\/\/starburstfound.org\/superwaveblog\/index.php?rest_route=\/wp\/v2\/posts\/84\/revisions\/398"}],"wp:attachment":[{"href":"https:\/\/starburstfound.org\/superwaveblog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=84"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starburstfound.org\/superwaveblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=84"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starburstfound.org\/superwaveblog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=84"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}