OneMarketData, a leader in tick data management and analytics, and QuantHouse, the leading independent provider of low latency trading solutions, today announced the integration of QuantFEED, a unique end-to-end ultra low latency market data feed, into OneTick Database and CEP.
For the integration, OneMarketData developed a real-time adapter to QuantFEED that allows OneTick to collect and normalize real-time market data and insert all QuantFEED's exchange feeds into OneTick's CEP engine and tick database. Development was done in conjunction with a mutual QuantFEED and OneMarketData European bank customer, who encouraged the development of the adapter.
"QuantHouse and OneMarketData both have a long and proven track record of providing top-caliber services to the market," noted Richard Chmiel, Vice President at OneMarketData, said. "This most recent integration further underscores OneTick's position as the only system that was built from its inception to offer data capture, analysis and real-time signal generation on a single, integrated platform, thus empowering users and lowering firms' total cost of ownership."
QuantHouse and OneMarketData had previously collaborated to integrate QuantHouse's QuantFactory into OneTick, which permits QuantFactory users to back-test quant strategies using OneTick. The two companies are also currently discussing potential collaborations on other strategic partnerships, including: managed services, hosting and collocation. The goal is provide a comprehensive platform that combines all the applications needed to perform quant research and algo trading by making available ultra low latency market data feeds, tick data storage, corporate actions, reference data, trading analytics and real-time strategy execution via access to the suite of products offered by QuantHouse and OneTick.
Stéphane Leroy, Head of Global Sales and Marketing at QuantHouse, commented, "OneMarketData has an excellent reputation in the market, and we are pleased to be working with them again on this integration and on future collaborations." He continued, "Together we are able to provide systematic trading companies with a suite of solutions that have the speed, power and flexibility firms need to execute their sophisticated trading strategies."
OneTick CEP and Database collect and process millions of ticks per second on one CPU and archive billions of ticks per day globally, providing uniform access to all tick data, up to and including the latest tick. A multi-asset class solution, OneTick includes an easy-to-use graphical user interface to access all data including equities, fixed income, futures, FX and options, as well as full order book data. With no limitations on data volumes, peak rates or length of stored history, it allows users to access one integrated database for all quantitative research needs.
Monday, April 25, 2011
Is it possible to get latency in micro second between SGX singapore to delhi india
Faster-than-light
"Faster than the speed of light" redirects here. For other uses, see Faster than the speed of light (disambiguation).
Faster-than-light (also superluminal or FTL) communications and travel refer to the propagation of information or matter faster than the speed of light. Under the special theory of relativity, a slower-than-light particle with nonzero rest mass needs infinite energy to accelerate to the speed of light, although special relativity does not forbid the existence of particles that travel faster than light at all times (see tachyons).
On the other hand, what some physicists refer to as "apparent" or "effective" FTL[1][2][3][4] is the hypothesis that unusually distorted regions of spacetime might permit matter to reach distant locations faster than it would take light in the normal or undistorted spacetime. Although, according to current theories, matter is still required to travel subluminally with respect to the locally distorted spacetime region, apparent FTL is not excluded by general relativity. Examples of apparent FTL proposals are the Alcubierre drive and the traversable wormhole, although the physical plausibility of these solutions is uncertain.
FTL travel of non-information
In the context of this article, FTL is transmitting information or matter faster than c, a constant equal to the speed of light in a vacuum, 299,792,458 meters per second, or about 186,282.4 miles per second. This is not quite the same as traveling faster than light, since:
Some processes propagate faster than c, but cannot carry information (See Examples section immediately following)).
Light travels at speed c/n when not in a vacuum but traveling through a medium with refractive index = n (causing refraction), and in some materials other particles can travel faster than c/n (but still slower than c), leading to Cherenkov radiation (see phase velocity below)
Neither of these phenomena violates special relativity or creates problems with causality, and thus neither qualifies as FTL as described here.
In the following examples, certain influences may appear to travel faster than light, but they do not convey energy or information faster than light, so they do not violate special relativity.
Daily motion of the Heavens
For an earthbound observer objects in the sky complete one revolution around the earth in 1 day. Proxima Centauri, which is the nearest star outside the Solar system, is about 4 light years away.[5] On a geostationary view Alpha Centauri has a speed many times greater than "c" as the rim speed of an object moving in a circle is a product of the radius and angular speed.[6] It is also possible on a geostatic view for objects such as comets to vary their speed from subluminal to superluminal and vice versa simply because the distance from the earth varies. Comets may have orbits which take them out to more than 1000 AU.[7] Circumference of a circle radius 1000 AU is greater than one light day. In other words, a comet at such a distance is superluminal in a geostatic frame.
Light spots and shadows
If a laser is swept across a distant object, the spot of light can easily be made to move at a speed greater than c.[8] Similarly, a shadow projected onto a distant object can be made to move faster than c.[9] In neither case does any information travel faster than light.
Apparent FTL propagation of static field effects
Main articles: Speed of gravity and Aberration of light
For a motionless object that "radiates" (or more correctly, is the source of) a static electric field (such as an electric charge) or a static gravitational field (such as a mass), the lines of the static field itself do not propagate through space, but only exist in space. At a distance from the source of the static field, this may cause an effect which may make the behavior of the field appear to change with speeds faster than light, if it is suddenly viewed from a different reference frame.
When an observer of the static field from a distant charged object regards the object and its field, both of them do not change. But when the observer begins to move, the object and the field extending from it suddenly change in direction, all at once, with the field lines continuing to point at the moving object. The moving observer can now validly choose to see his/her own position as stationary, and instead consider the charge and its static field, extending throughout space, as suddenly having begun to move. This is a consequence of the concept of Lorentz symmetry, which states that no absolute velocity of a system through space can be measured, and thus measurements from any reference frame must be the same as measurements taken from a reference frame that moves with constant velocity relative to the first frame.
Thus, when an observer of a static charge (and its extended field) begins to move relative to the field-source, then the motion of the source (and its static field at all positions in space), may all appear to change instantly. This includes the direction of the field as seen far away from the field source, and which now suddenly appears to be pointing to the moving source and directed toward it as it moves, needing no time to catch up with the distant object's sudden "new" motion. In consequence, for a distant object moving transversely at a constant velocity which does not change, the direction along the static field back to its source is always and instantaneously correctly oriented to its actual position, no matter how far away the field-source is. Since there is no "retardation" of the apparent position of the source of a static field, this effect seems to be "transmitted" faster than the speed of light, although in actuality, any constant velocity motion of the "source" can always all be attributed to the observer, so all information about the motion of the "static field" that seems to be transmitted faster-than-light, is actually contained in the point of view of the observer (i.e., it can all be changed back just as quickly, if the observer stops, so that the moving "field source" is again seen as motionless).
However, because of these effects, a static field undergoes no aberration as seen by an observer, and because of the Lorentz symmetry, it always points to the instantaneous direction source as if it continued with the same relative velocity of source and emitter at a previous time calculated by their distance from each other, divided by c. Thus, static fields from objects moving with constant velocity are always kept "up to date" at distances from the source, on the Lorentz-driven "assumption" that the source of the field has kept moving at constant velocity for the time it would take a light ray to move from it to the observer. If this constant motion is what the source has in fact maintained, over times given by the speed of light at various distances, then static fields at those distant points, point to the real (instantaneous) position of the source, not its retarded position (position corrected by light-travel time).
However, no information is transmitted (propagated) from source to receiver/observer by a static field, even if the true and instantaneous correct direction to the source is maintained at constant relative velocity. The fact that the source is "there," does not count as information, since it is at most only a single bit, and it does not change immediately when the source motion changes due to its own acceleration. If the source of the field does accelerate from its constant velocity, then its static field still behaves as though it had continued with its former constant-velocity (this is now incorrect, as the direction of the field farther way from this distance now point in the wrong direction, and not exactly at present instantaneous position of the source). Furthermore, the correct "update" in the static field due to the acceleration, moves outward from the emitter only at the speed of light. This is a fundamental reason why emission of electromagnetic and gravitational waves requires the emitter to accelerate. Such emitted waves do undergo aberration when detected by an observer, since they do propagate away from the source at the speed of light. Also (unlike the static field) such waves are capable or carrying information, but they carry it only at the speed of light.
For a simple example, the direction of the static gravitation field from the Sun points exactly at the Sun's current position, and is not corrected by the 8.3 minutes of travel time that light takes between Earth and Sun. There is no aberration for static gravity. However, light from the Sun, as a wave, does show annual solar aberration, and the optical image of the Sun, as seen in Earth telescopes, thus shows the position of the Sun as it was in the sky 8.3 minutes before. However, since the relative velocity of Earth and Sun stay approximately constant, the gravitational position of the Sun (direction of the Sun's pull on the Earth) does not show the retardation or light-aberration effects of the optical position. Thus, the direction of the Sun's pull on the Earth, and direction of the light from the Sun coming to the Earth, are from slightly different directions. For similar reasons, if the Sun possessed a static electrical charge, the pull (or push) from this effect would be felt by the Earth in the direction of the pull of solar gravity, not in the direction of sunlight.
In quantum mechanics, static fields are transmitted by virtual particles, which may have speeds that exceed c. When physicist Richard Feynman was once asked by a questioner how gravity could escape the event horizon of a black hole, he replied simply that a static gravitational field would be carried by virtual gravitons, which have no trouble traveling faster than light. More mundanely, static electric field effects show the same lack of light speed limitations, and electric fields would also "escape" the influence of a black hole. Thus, black holes may be electrically charged.
"Faster than the speed of light" redirects here. For other uses, see Faster than the speed of light (disambiguation).
Faster-than-light (also superluminal or FTL) communications and travel refer to the propagation of information or matter faster than the speed of light. Under the special theory of relativity, a slower-than-light particle with nonzero rest mass needs infinite energy to accelerate to the speed of light, although special relativity does not forbid the existence of particles that travel faster than light at all times (see tachyons).
On the other hand, what some physicists refer to as "apparent" or "effective" FTL[1][2][3][4] is the hypothesis that unusually distorted regions of spacetime might permit matter to reach distant locations faster than it would take light in the normal or undistorted spacetime. Although, according to current theories, matter is still required to travel subluminally with respect to the locally distorted spacetime region, apparent FTL is not excluded by general relativity. Examples of apparent FTL proposals are the Alcubierre drive and the traversable wormhole, although the physical plausibility of these solutions is uncertain.
FTL travel of non-information
In the context of this article, FTL is transmitting information or matter faster than c, a constant equal to the speed of light in a vacuum, 299,792,458 meters per second, or about 186,282.4 miles per second. This is not quite the same as traveling faster than light, since:
Some processes propagate faster than c, but cannot carry information (See Examples section immediately following)).
Light travels at speed c/n when not in a vacuum but traveling through a medium with refractive index = n (causing refraction), and in some materials other particles can travel faster than c/n (but still slower than c), leading to Cherenkov radiation (see phase velocity below)
Neither of these phenomena violates special relativity or creates problems with causality, and thus neither qualifies as FTL as described here.
In the following examples, certain influences may appear to travel faster than light, but they do not convey energy or information faster than light, so they do not violate special relativity.
Daily motion of the Heavens
For an earthbound observer objects in the sky complete one revolution around the earth in 1 day. Proxima Centauri, which is the nearest star outside the Solar system, is about 4 light years away.[5] On a geostationary view Alpha Centauri has a speed many times greater than "c" as the rim speed of an object moving in a circle is a product of the radius and angular speed.[6] It is also possible on a geostatic view for objects such as comets to vary their speed from subluminal to superluminal and vice versa simply because the distance from the earth varies. Comets may have orbits which take them out to more than 1000 AU.[7] Circumference of a circle radius 1000 AU is greater than one light day. In other words, a comet at such a distance is superluminal in a geostatic frame.
Light spots and shadows
If a laser is swept across a distant object, the spot of light can easily be made to move at a speed greater than c.[8] Similarly, a shadow projected onto a distant object can be made to move faster than c.[9] In neither case does any information travel faster than light.
Apparent FTL propagation of static field effects
Main articles: Speed of gravity and Aberration of light
For a motionless object that "radiates" (or more correctly, is the source of) a static electric field (such as an electric charge) or a static gravitational field (such as a mass), the lines of the static field itself do not propagate through space, but only exist in space. At a distance from the source of the static field, this may cause an effect which may make the behavior of the field appear to change with speeds faster than light, if it is suddenly viewed from a different reference frame.
When an observer of the static field from a distant charged object regards the object and its field, both of them do not change. But when the observer begins to move, the object and the field extending from it suddenly change in direction, all at once, with the field lines continuing to point at the moving object. The moving observer can now validly choose to see his/her own position as stationary, and instead consider the charge and its static field, extending throughout space, as suddenly having begun to move. This is a consequence of the concept of Lorentz symmetry, which states that no absolute velocity of a system through space can be measured, and thus measurements from any reference frame must be the same as measurements taken from a reference frame that moves with constant velocity relative to the first frame.
Thus, when an observer of a static charge (and its extended field) begins to move relative to the field-source, then the motion of the source (and its static field at all positions in space), may all appear to change instantly. This includes the direction of the field as seen far away from the field source, and which now suddenly appears to be pointing to the moving source and directed toward it as it moves, needing no time to catch up with the distant object's sudden "new" motion. In consequence, for a distant object moving transversely at a constant velocity which does not change, the direction along the static field back to its source is always and instantaneously correctly oriented to its actual position, no matter how far away the field-source is. Since there is no "retardation" of the apparent position of the source of a static field, this effect seems to be "transmitted" faster than the speed of light, although in actuality, any constant velocity motion of the "source" can always all be attributed to the observer, so all information about the motion of the "static field" that seems to be transmitted faster-than-light, is actually contained in the point of view of the observer (i.e., it can all be changed back just as quickly, if the observer stops, so that the moving "field source" is again seen as motionless).
However, because of these effects, a static field undergoes no aberration as seen by an observer, and because of the Lorentz symmetry, it always points to the instantaneous direction source as if it continued with the same relative velocity of source and emitter at a previous time calculated by their distance from each other, divided by c. Thus, static fields from objects moving with constant velocity are always kept "up to date" at distances from the source, on the Lorentz-driven "assumption" that the source of the field has kept moving at constant velocity for the time it would take a light ray to move from it to the observer. If this constant motion is what the source has in fact maintained, over times given by the speed of light at various distances, then static fields at those distant points, point to the real (instantaneous) position of the source, not its retarded position (position corrected by light-travel time).
However, no information is transmitted (propagated) from source to receiver/observer by a static field, even if the true and instantaneous correct direction to the source is maintained at constant relative velocity. The fact that the source is "there," does not count as information, since it is at most only a single bit, and it does not change immediately when the source motion changes due to its own acceleration. If the source of the field does accelerate from its constant velocity, then its static field still behaves as though it had continued with its former constant-velocity (this is now incorrect, as the direction of the field farther way from this distance now point in the wrong direction, and not exactly at present instantaneous position of the source). Furthermore, the correct "update" in the static field due to the acceleration, moves outward from the emitter only at the speed of light. This is a fundamental reason why emission of electromagnetic and gravitational waves requires the emitter to accelerate. Such emitted waves do undergo aberration when detected by an observer, since they do propagate away from the source at the speed of light. Also (unlike the static field) such waves are capable or carrying information, but they carry it only at the speed of light.
For a simple example, the direction of the static gravitation field from the Sun points exactly at the Sun's current position, and is not corrected by the 8.3 minutes of travel time that light takes between Earth and Sun. There is no aberration for static gravity. However, light from the Sun, as a wave, does show annual solar aberration, and the optical image of the Sun, as seen in Earth telescopes, thus shows the position of the Sun as it was in the sky 8.3 minutes before. However, since the relative velocity of Earth and Sun stay approximately constant, the gravitational position of the Sun (direction of the Sun's pull on the Earth) does not show the retardation or light-aberration effects of the optical position. Thus, the direction of the Sun's pull on the Earth, and direction of the light from the Sun coming to the Earth, are from slightly different directions. For similar reasons, if the Sun possessed a static electrical charge, the pull (or push) from this effect would be felt by the Earth in the direction of the pull of solar gravity, not in the direction of sunlight.
In quantum mechanics, static fields are transmitted by virtual particles, which may have speeds that exceed c. When physicist Richard Feynman was once asked by a questioner how gravity could escape the event horizon of a black hole, he replied simply that a static gravitational field would be carried by virtual gravitons, which have no trouble traveling faster than light. More mundanely, static electric field effects show the same lack of light speed limitations, and electric fields would also "escape" the influence of a black hole. Thus, black holes may be electrically charged.
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