Search Results - "Ehgamberdiev, Shuhrat"

Observations of SN 2017ein Reveal Shock Breakout Emission and a Massive Progenitor Star for a Type Ic Supernova by Xiang, Danfeng, Wang, Xiaofeng, Mo, Jun, Wang, Lingjun, Smartt, Stephen, Fraser, Morgan, Ehgamberdiev, Shuhrat A., Mirzaqulov, Davron, Zhang, Jujia, Zhang, Tianmeng, Vinko, Jozsef, Wheeler, J. Craig, Hosseinzadeh, Griffin, Howell, D. Andrew, McCully, Curtis, DerKacy, James M, Baron, E., Brown, Peter, Zhang, Xianfei, Bi, Shaolan, Song, Hao, Zhang, Kaicheng, Rest, A., Nomoto, Ken'ichi, Tolstov, Alexey, Blinnikov, Sergei

“…We present optical and ultraviolet observations of nearby Type Ic supernova (SN Ic) SN 2017ein, as well as a detailed analysis of its progenitor properties…”
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Astronomical Seeing and Meteorological Parameters at Maidanak Observatory by Tillayev, Yusufjon, Azimov, Azimjon, Ehgamberdiev, Shuhrat, Ilyasov, Sabit

“…In this article, we present the results of astronomical seeing measurements conducted at the Maidanak observatory and the influence of meteorological…”
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SN 2019ein: a Type Ia supernova likely originated from a sub-Chandrasekhar-mass explosion by Xi, Gaobo, Wang, Xiaofeng, Li, Wenxiong, Mo, Jun, Zhang, Jujia, Liu, Jialian, Chen, Zhihao, Filippenko, Alexei V, Zheng, Weikang, Brink, Thomas G, Zhang, Xinghan, Sai, Hanna, Ehgamberdiev, Shuhrat A, Mirzaqulov, Davron, Zhang, Jicheng

“…ABSTRACT We present extensive optical photometric and spectroscopic observations for the nearby Type Ia supernova (SN Ia) 2019ein, spanning the phases from ∼3…”
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The Stellar Abundances and Galactic Evolution Survey (SAGES). I. General Description and the First Data Release (DR1) by Fan, Zhou, Zhao, Gang, Wang, Wei, Zheng, Jie, Zhao, Jingkun, Li, Chun, Chen, Yuqin, Yuan, Haibo, Li, Haining, Tan, Kefeng, Song, Yihan, Zuo, Fang, Huang, Yang, Luo, Ali, Esamdin, Ali, Ma, Lu, Li, Bin, Song, Nan, Grupp, Frank, Zhao, Haibin, Ehgamberdiev, Shuhrat A., Burkhonov, Otabek A., Feng, Guojie, Bai, Chunhai, Zhang, Xuan, Niu, Hubiao, Khodjaev, Alisher S., Khafizov, Bakhodir M., Asfandiyarov, Ildar M., Shaymanov, Asadulla M., Karimov, Rivkat G., Yuldashev, Qudratillo, Lu, Hao, Zhaori, Getu, Hong, Renquan, Hu, Longfei, Liu, Yujuan, Xu, Zhijian

“…Abstract The Stellar Abundances and Galactic Evolution Survey (SAGES) of the northern sky is a specifically designed multiband photometric survey aiming to…”
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A superluminous supernova lightened by collisions with pulsational pair-instability shells by Lin, Weili, Wang, Xiaofeng, Yan, Lin, Gal-Yam, Avishay, Mo, Jun, Brink, Thomas G., Filippenko, Alexei V., Xiang, Danfeng, Lunnan, Ragnhild, Zheng, Weikang, Brown, Peter, Kasliwal, Mansi, Fremling, Christoffer, Blagorodnova, Nadejda, Mirzaqulov, Davron, Ehgamberdiev, Shuhrat A., Lin, Han, Zhang, Kaicheng, Zhang, Jicheng, Yan, Shengyu, Zhang, Jujia, Chen, Zhihao, Deng, Licai, Wang, Kun, Xiao, Lin, Wang, Lingjun

“…Superluminous supernovae are among the most energetic stellar explosions in the Universe, but their energy sources remain an open question. Here we present…”
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Optical and ultraviolet monitoring of the black hole X-ray binary MAXI J1820+070/ASASSN-18ey for 18 months by Sai, Hanna, Wang, Xiaofeng, Wu, Jianfeng, Lin, Jie, Feng, Hua, Zhang, Tianmeng, Li, Wenxiong, Zhang, Jujia, Mo, Jun, Sun, Tianrui, Ehgamberdiev, Shuhrat A, Mirzaqulov, Davron, Rui, Liming, Lin, Weili, Zhao, Xulin, Lin, Han, Zhang, Jicheng, Zhang, Xinghan, Zhao, Yong, Li, Xue, Xiang, Danfeng, Wang, Lingzhi, Wu, Chengyuan

“…ABSTRACT MAXI J1820+070 is a low-mass black hole X-ray binary system with high luminosity in both optical and X-ray bands during its outburst periods. We…”
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SN 2022vqz: a peculiar subluminous Type Ia supernova with prominent early excess emission by Xi, Gaobo, Wang, Xiaofeng, Li, Gaici, Liu, Jialian, Yan, Shengyu, Lin, Weili, Zhao, Jieming, Filippenko, Alexei V, Zheng, WeiKang, Brink, Thomas G, Yang, Y, Ehgamberdiev, Shuhrat A, Mirzaqulov, Davron, Reguitti, Andrea, Pastorello, Andrea, Tomasella, Lina, Cai, Yongzhi, Zhang, Jujia, Li, Zhitong, Zhang, Tianmeng, Sai, Hanna, Chen, Zhihao, Liu, Qichun, Ma, Xiaoran, Xiang, Danfeng

“…ABSTRACT We present extensive photometric and spectroscopic observations of the peculiar Type Ia supernova (SN Ia) 2022vqz. It shares many similarities with…”
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Unusual Hard X-Ray Flares Caught in NICER Monitoring of the Binary Supermassive Black Hole Candidate AT2019cuk/Tick Tock/SDSS J1430+2303 by Masterson, Megan, Kara, Erin, Pasham, Dheeraj R., D’Orazio, Daniel J., Walton, Dominic J., Fabian, Andrew C., Lucchini, Matteo, Remillard, Ronald A., Arzoumanian, Zaven, Burkhonov, Otabek, Choi, Hyeonho, Ehgamberdiev, Shuhrat A., Ferrara, Elizabeth C., Guolo, Muryel, Im, Myungshin, Kim, Yonggi, Mirzaqulov, Davron O., Paek, Gregory S. H., Sung, Hyun-Il, Yoon, Joh-Na

“…Abstract The nuclear transient AT2019cuk/Tick Tock/SDSS J1430+2303 has been suggested to harbor a supermassive black hole (SMBH) binary near coalescence. We…”
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The Early Light Curve of the Type Ia Supernova 2021hpr in NGC 3147: Progenitor Constraints with the Companion Interaction Model by Lim, Gu, Im, Myungshin, Paek, Gregory S. H., Yoon, Sung-Chul, Choi, Changsu, Kim, Sophia, Wheeler, J. Craig, Thomas, Benjamin P., Vinkó, Jozsef, Kim, Dohyeong, Seo, Jinguk, Kang, Wonseok, Kim, Taewoo, Sung, Hyun-Il, Kim, Yonggi, Yoon, Joh-Na, Kim, Haeun, Kim, Jeongmook, Bae, Hana, Ehgamberdiev, Shuhrat, Burhonov, Otabek, Mirzaqulov, Davron

“…Abstract The progenitor system of Type Ia supernovae (SNe Ia) is expected to be a close binary system consisting of a carbon/oxygen white dwarf (WD) and a…”
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Present status of UBAI plate archive by Shuhrat Abdumannapovich, Ehgamberdiev, Qudratillo Khabibullaevich, Yuldoshev, Sobir Jurakobilovich, Turaev, Zhao, Jianhai, Yang, Meiting, Tang, Zhenghong, Yu, Yong

“…This paper discusses a photographic plate archive of the Ulugh Beg Astronomical Institute (UBAI) of the Uzbek Academy of Sciences, the history of photometric…”
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Surface Layer Turbulence at the Maidanak Observatory by Azimov, Azimjon, Tillayev, Yusufjon, Ehgamberdiev, Shuhrat, Rajabov, Yodgor, Ilyasov, Sabit, Sarazin, Marc

“…Results of night-time surface layer turbulence measurements using ESO LuSci at the Maidanak observatory are presented. Turbulence in the surface layer was…”
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Estimation of Astronomical Seeing with Neural Networks at the Maidanak Observatory by Shikhovtsev, Artem Y., Kiselev, Alexander V., Kovadlo, Pavel G., Kopylov, Evgeniy A., Kirichenko, Kirill E., Ehgamberdiev, Shuhrat A., Tillayev, Yusufjon A.

“…In the present article, we study the possibilities of machine learning for the estimation of seeing at the Maidanak Astronomical Observatory (38∘40′24″ N,…”
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Search and study of the space debris and asteroids within ISON project by Molotov, Igor E, Krugly, Yurij N, Elenin, Leonid V, Schildknecht, Thomas, Rumyantsev, Vasilij V, Inasaridze, Raguli Ya, Aivazyan, Vova R, Kapanadze, Givi V, Canals, Lluis R, Graziani, Filippo, Teofilatto, Paolo, Ehgamberdiev, Shuhrat A, Burkhonov, Otabek A, Chornaya, Ekaterina D, Kochergin, Anton V, Abdel-Aziz, Yehia A, Abdelaziz, Ahmed M, Kouprianov, Vladimir V, Zakhvatkin, Mikhail V, Stepanyants, Victor A, Reva, Inna V, Serebryanskiy, Alexander V, Schmalz, Sergei E, Nikolenko, Igor V

“…International Scientific Optical Network (ISON) is an open international voluntary project specializing in observations of the near-Earth space objects…”
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Energy Spectra of Atmospheric Turbulence for Calculating Cn2 Parameter. I. Maidanak and Suffa Observatories in Uzbekistan by Shikhovtsev, Artem Yu, Kovadlo, Pavel G., Kopylov, Evgeniy A., Ibrahimov, Mansur A., Ehgamberdiev, Shuhrat A., Tillayev, Yusufjon A.

“…Knowledge of the turbulence spectra is of interest for describing atmospheric conditions as applied to astronomical observations. This article discusses the…”
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The Peculiar Transient AT2018cow: A Possible Origin of a Type Ibn/IIn Supernova by Xiang, Danfeng, Wang, Xiaofeng, Lin, Weili, Mo, Jun, Lin, Han, Burke, Jamison, Hiramatsu, Daichi, Hosseinzadeh, Griffin, Howell, D. Andrew, McCully, Curtis, Valenti, Stefan, Vinkó, József, Wheeler, J. Craig, Ehgamberdiev, Shuhrat A., Mirzaqulov, Davron, Bódi, Attila, Bognár, Zsófia, Cseh, Borbála, Hanyecz, Ottó, Ignácz, Bernadett, Kalup, Csilla, Könyves-Tóth, Réka, Kriskovics, Levente, Ordasi, András, Pál, András, Sárneczky, Krisztián, Seli, Bálint, Szakáts, Róbert, Arranz-Heras, T., Benavides-Palencia, R., Cejudo-Martínez, D., De la Fuente-Fernández, P., Escartín-Pérez, A., la Cuesta, F. García-De, González-Carballo, J. L., González-Farfán, R., Limón-Martínez, F., Mantero, A., Naves-Nogués, R., Morales-Aimar, M., Ruíz-Ruíz, V. R., Soldán-Alfaro, F. C., Valero-Pérez, J., Violat-Bordonau, F., Zhang, Tianmeng, Zhang, Jujia, Li, Xue, Chen, Zhihao, Sai, Hanna, Li, Wenxiong

“…Abstract We present our photometric and spectroscopic observations of the peculiar transient AT2018cow. The multiband photometry covers from peak to ∼70 days,…”
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Modern astronomy at the Maidanak observatory in Uzbekistan by Ehgamberdiev, Shuhrat

“…The Maidanak Astronomical Observatory is involved in collaborative observing programs requiring uninterrupted monitoring of celestial objects by providing…”
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Noble gases and nitrogen in CV3 chondrite Bukhara by Mahajan, Ramakant R., Ehgamberdiev, Shuhrat A., Naik, Sekhar

“…We investigated noble gas (He, Ne, Ar, Kr and Xe) and nitrogen isotopic composition in the carbonaceous chondrite Bukhara (CV3). This is the first report of N…”
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New results on the two low-mass-ratio overcontact binaries V1309 Herculis and AS Coronae Borealis by Matekov, Azizbek, Meng, Fangbin, Qian, Shengbang, Asfandiyarov, Ildar, Li, Linjia, Ehgamberdiev, Shuhrat, Zhu, Liying

“…Abstract We present new multi-color light curves of V1309 Her and AS CrB, which were observed by the 60 cm telescope located at the Maidanak Astronomical…”
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Taiwan Automated Telescope Network by Sun, Ming-Tsung, Wang, Li-Han, Chou, Dean-Yi, Ehgamberdiev, Shuhrat, Serebryanskiy, Alexander, Jimenez, Antonio, Fernandez Fernandez, Javier

“…A global network of small automated telescopes, the Taiwan Automated Telescope (TAT) network, dedicated to photometric measurements of stellar pulsations, is…”
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CSS_J154915.7+375506: a low-mass-ratio marginal contact binary system with a hierarchical third body by Wu, Jin-Feng, Zhu, Li-Ying, Matekov, Azizbek, Li, Lin-jia, Ehgamberdiev, Shuhrat, Asfandiyarov, Ildar, Wang, Jiang-Jiao, Zhang, Jia, Meng, Fang-Bin

“…ABSTRACT We presented the multifilter light curves of CSS_J154915.7+375506 inaugurally, which were observed by the 1.5-m Astronomicheskiy Zerkalniy Telescope…”
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