Dr. Yong Tian： "Testing the Strong Equivalence Principle: New Evidences for Modified Gravity"
Time/Location： 2022-05-18 12:10 [Via Google Meet]
Authers/Journal Paper：
Abstract：
The strong equivalence principle (SEP) is the distinguishing feature of General Relativity, which demands that the internal dynamics of a self-gravitating system under freefall in an external gravitational field should not depend on the external field strength. Strikingly, recent studies have revealed a violation in SEP and preferred the external field effect (EFE) of MOdified Newtonian Dynamics (MOND). By examining the unique prediction in MOND, we can understand better the issues of dark matter problems. In this talk, I will briefly introduce the conceptions of the equivalence principle, the EFE of MOND, and some important results in the recent discoveries. For example, EFE is statistically detected at more than 4σ from a blind test of 153 SPARC rotating galaxies.
For more details, you may refer to the link:
https://ui.adsabs.harvard.edu/abs/2020ApJ...904...51C/abstract
https://ui.adsabs.harvard.edu/abs/2021ApJ...921..104C/abstract
We will meet here on:
https://meet.google.com/gpc-srrp-wcg
| Date | Speaker | Title |
|---|
| 2022-05-18 | Dr. Yong Tian | Testing the Strong Equivalence Principle: New Evidences for Modified Gravity |
| 2022-05-11 | JiaYu Ou | Mid-infrared Period–Luminosity Relations for Miras in the Large Magellanic Cloud |
| 2022-05-04 | Prof. Hwang | On the relative importance of AGN winds for the evolution of exoplanet atmospheres |
| 2022-03-23 | Mahitosh Ray | Probing the kinematics and chemistry of the hot core Mon R2 IRS 3 using ALMA observations |
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| 2021-12-29 | Prof. Chen | Filament coalescence and hub structure in Mon R2 --- Implications to massive star and cluster formation |
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| 2021-10-20 | Prof. Hwang | Galaxy zoo builder: Morphological dependence of spiral galaxy pitch angle by T. Lingard et al |
| 2021-06-09 | Dr. Yong Tian | A massive blow for ΛCDM - the high redshift, mass, and collision velocity of the interacting galaxy cluster El Gordo contradicts concordance cosmology
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| 2020-12-30 | Prof. Pan | "First Hubble diagram and cosmological constraints using superluminous supernova" by Inserra et al.
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| 2020-12-23 | Prof. Chen | "Discovery of a mid-infrared protostellar outburst of exceptional amplitude" by Lucas et al. |
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| 2017-10-17 | Prof. Chorng-Yuan Hwang | How large are the globular cluster systems of early-type galaxies and do they scale with galaxy halo properties? |
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| 2016-12-08 | Prof. Yi Chou | Discovery of a new accreting millisecond X-ray pulsar in the globular cluster NGC 2808
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| 2016-10-20 | Po-Shih Chiang | Spiral density waves in a young protoplanetary disk |
| 2016-10-13 | Chien-De Lee | Pan-STARRS and PESSTO search for an optical counterpart to the LIGO gravitational-wave source GW150914 |
| 2016-05-26 | Jen-Chao Huang | Radio continuum detection in blue early-type weak emission line galaxies |
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| 2016-02-25 | Po-Shih Chiang 姜博識 | An all-sky Support Vector Machine selection of WISE YSO Candidates. |
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| 2015-12-10 | Yong Tian 田雍 | Statistical Method on Astrophysics – Local Regression Method |
| 2015-11-26 | Daisuke Kinoshita 木下大輔 | Observations of “fresh” and weathered surfaces on asteroid pairs and their implications on the rotational-fission mechanism |
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| 2015-10-08 | Po-Shih Chiang 姜博識 | Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager |
| 2015-10-01 | Hsing-Wen Lin 林省文 | Space Weathering Trends Among Carbonaceous Asteroids |
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| 2014-10-09 | Zong-Fu Sie 謝宗富 | The host galaxy and late-time evolution of the Super-Luminous Supernova PTF12dam |
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