Astrophysics

Testing the Invariance of the Speed of Light by Means of Astrometric Data

Authors: Attilio Colombo
Comments: 5 Pages.

A test case aiming to validate the relativistic velocity composition rule on the basis of high-accuracy astrometric observation data is presented. The test exploits the phenomenon of the aberration of the light coming from celestial objects due to the motion of the observer. In particular, it is based on the analysis of the results obtained by applying both the relativistic velocity composition rule and the classical vector sum to calculate the un-aberrated position of the celestial objects from a series of repeated observations of the same object in the course of time.
Category: Astrophysics

Mercury Anomaly and Milgrom’s Constant

Authors: Yury Rabyshko
Comments: 4 Pages.

More than 160 years have passed since the discovery of the anomaly of the motion of Mercury. A huge number of measurements have been carried out confirming the presence of this anomaly. Theories have been written to explain this anomaly. But during this period, not a single calculation has been made of the anomalous acceleration of Mercury that is causing this anomalous perihelion shift. At least I have not been able to find such works. Let’s try to fill this gap and solve this problem.
Category: Astrophysics

Аномалия Меркурия и константа Милгрома (Mercury Anomaly and Milgrom’s Constant)

Authors: Yury Rabyshko
Comments: 4 Pages. In Russian

С момента обнаружения аномалии движения Меркурия прошло уже более 160 лет. Было проведено огромное число измерений подтверждающий наличие этой аномалии. Были написаны теории объясняющие эту аномалию. Но на протяжении этого периода не было проведено ни одного вычисления аномального ускорения Меркурия которое вызывает этот аномальный сдвиг перигелия. По крайней мере, мне не удалось разыскать таких трудов. Попробуем восполнить этот пробел и решить данную задачу.

More than 160 years have passed since the discovery of the anomaly of the motion of Mercury. A huge number of measurements have been carried out confirming the presence of this anomaly. Theories have been written to explain this anomaly. But during this period, not a single calculation has been made of the anomalous acceleration of Mercury that is causing this anomalous perihelion shift. At least I have not been able to find such works. Let’s try to fill this gap and solve this problem.
Category: Astrophysics

A Statistical Test of Gravitational Wave Events

Authors: Yang Ji
Comments: 10 Pages. 3 figures. A Chinese Version is also given in the appendix.

Here I show some statistics of all the 93 gravitational wave (GW) events observed by LIGO in 3 phases during the last 6 years, with 3, 8 and 82 GW events for each phase. The detection sensitivity in O3 phase was increased by 40\% than that in O2 phase. The co-working ratio of the two LIGO observatories was 0.42 (O2 phase) and 0.60 (O3 phase), respectively. The product of sensitive volume and time (VT) was thus increased by a factor of $1.4^3 \times (0.60/0.42) \approx 4$. Statistical analyses of all the 93 GW events suggest that the observations so far do not meet an intuitive expectation, say, with higher detection sensitivity and longer observation time, we should observe more GW events.
Category: Astrophysics

Relativistic Gravitational Equations

Authors: Gerardo Chacón
Comments: 8 Pages.

The emphasis is not on precisely specifying the physical meaning of the scheme of the proposed gravitational equations, but on the calculation process from which they derive and whether they can be consistent and provide a calculation alternative that allows greater simplicity in obtaining acceptably satisfactory results to those already veried by general relativity.
Category: Astrophysics