Search Results - "Gopakumar, A."

Explaining temporal variations in the jet PA of the blazar OJ 287 using its BBH central engine model by Dey, Lankeswar, Valtonen, Mauri J, Gopakumar, A, Lico, Rocco, Gómez, José L, Susobhanan, Abhimanyu, Komossa, S, Pihajoki, Pauli

“…ABSTRACT The bright blazar OJ 287 is the best-known candidate for hosting a supermassive black hole binary system. It inspirals due to the emission of…”
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Cellulose Nanofiber-Based Polyaniline Flexible Papers as Sustainable Microwave Absorbers in the X‑Band by Gopakumar, Deepu A, Pai, Avinash R, Pottathara, Yasir Beeran, Pasquini, Daniel, Carlos de Morais, Luís, Luke, Mereena, Kalarikkal, Nandakumar, Grohens, Yves, Thomas, Sabu

“…A series of flexible, lightweight, and highly conductive cellulose nanopapers were fabricated through in situ polymerization of aniline monomer on to cellulose…”
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The 2020 April–June super-outburst of OJ 287 and its long-term multiwavelength light curve with Swift: binary supermassive black hole and jet activity by Komossa, S, Grupe, D, Parker, M L, Valtonen, M J, Gómez, J L, Gopakumar, A, Dey, L

“…ABSTRACT We report detection of a very bright X-ray–UV–optical outburst of OJ 287 in 2020 April–June, the second brightest since the beginning of our Swift…”
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X-ray spectral components of the blazar and binary black hole candidate OJ 287 (2005–2020) by Komossa, S, Grupe, D, Parker, M L, Gómez, J L, Valtonen, M J, Nowak, M A, Jorstad, S G, Haggard, D, Chandra, S, Ciprini, S, Dey, L, Gopakumar, A, Hada, K, Markoff, S, Neilsen, J

“…ABSTRACT We present a comprehensive analysis of all XMM–Newton spectra of OJ 287 spanning 15 yr of X-ray spectroscopy of this bright blazar. We also report the…”
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Meldrum’s Acid Modified Cellulose Nanofiber-Based Polyvinylidene Fluoride Microfiltration Membrane for Dye Water Treatment and Nanoparticle Removal by Gopakumar, Deepu A, Pasquini, Daniel, Henrique, Mariana Alves, de Morais, Luis Carlos, Grohens, Yves, Thomas, Sabu

“…The work presented here aims to study and compare the performance of a polyvinylidene fluoride (PVDF) electrospun membrane, unmodified cellulose nanofiber…”
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Evaluation of the thermomechanical properties and biodegradation of brown rice starch-based chitosan biodegradable composite films by Hasan, M., Gopakumar, Deepu A., Olaiya, N.G., Zarlaida, Fitri, Alfian, A., Aprinasari, Cut, Alfatah, Tata, Rizal, Samsul, Khalil, H.P.S. Abdul

“…Biodegradable films composed of starch and chitosan plasticized by palm oil were fabricated via a solvent casting technique. In this study, the influence of…”
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A Review on Plant Cellulose Nanofibre-Based Aerogels for Biomedical Applications by Abdul Khalil, H P S, Adnan, A S, Yahya, Esam Bashir, Olaiya, N G, Safrida, Safrida, Hossain, Md Sohrab, Balakrishnan, Venugopal, Gopakumar, Deepu A, Abdullah, C K, Oyekanmi, A A, Pasquini, Daniel

“…Cellulose nanomaterials from plant fibre provide various potential applications (i.e., biomedical, automotive, packaging, etc.). The biomedical application of…”
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Flexible papers derived from polypyrrole deposited cellulose nanofibers for enhanced electromagnetic interference shielding in gigahertz frequencies by Gopakumar, Deepu A., Pai, Avinash R., Pottathara, Yasir Beeran, Pasquini, Daniel, Morais, Luís Carlos, Khalil H.P.S., Abdul, Nzihou, Ange, Thomas, Sabu

“…An array of highly conductive, lightweight and flexible cellulose nanopapers as effective attenuators of electromagnetic radiations within 8.2–12.4 GHz (X…”
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Authenticating the Presence of a Relativistic Massive Black Hole Binary in OJ 287 Using Its General Relativity Centenary Flare: Improved Orbital Parameters by Dey, Lankeswar, Valtonen, M. J., Gopakumar, A., Zola, S., Hudec, R., Pihajoki, P., Ciprini, S., Matsumoto, K., Sadakane, K., Kidger, M., Nilsson, K., Mikkola, S., Sillanpää, A., Takalo, L. O., Lehto, H. J., Berdyugin, A., Piirola, V., Jermak, H., Baliyan, K. S., Pursimo, T., Caton, D. B., Alicavus, F., Baransky, A., Blay, P., Boumis, P., Boyd, D., Torrent, M. Campas, Campos, F., Gómez, J. Carrillo, Chandra, S., Chavushyan, V., Dalessio, J., Debski, B., Drozdz, M., Er, H., Erdem, A., Pérez, A. Escartin, Ramazani, V. Fallah, Filippenko, A. V., Gafton, E., Ganesh, S., Garcia, F., Gazeas, K., Godunova, V., Pinilla, F. Gómez, Gopinathan, M., Haislip, J. B., Harmanen, J., Hurst, G., Jelinek, M., Joshi, A., Kagitani, M., Karjalainen, R., Kaur, N., Keel, W. C., Kouprianov, V. V., Kundera, T., Kurowski, S., Kvammen, A., Lee, B. C., Liakos, A., Lindfors, E., de Haro, J. Lozano, Mugrauer, M., Nogues, R. Naves, Neely, A. W., Nelson, R. H., Ogloza, W., Okano, S., Pajdosz- mierciak, U., Pandey, J. C., Perri, M., Poyner, G., Provencal, J., Raj, A., Reichart, D. E., Reinthal, R., Reynolds, T., Saario, J., Sadegi, S., Sakanoi, T., Sameer, Schweyer, T., Simon, A., Alfaro, F. C. Soldán, Sonbas, E., Steele, I., Stocke, J. T., Strobl, J., Tomov, T., Espasa, L. Tremosa, Valdes, J. R., Pérez, J. Valero, Verrecchia, F., Vasylenko, V., Webb, J. R., Yoneda, M., Zejmo, M., Zheng, W., Zielinski, P.

“…Results from regular monitoring of relativistic compact binaries like PSR 1913+16 are consistent with the dominant (quadrupole) order emission of gravitational…”
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The Host Galaxy of OJ 287 Revealed by Optical and Near-infrared Imaging by Nilsson, K., Kotilainen, J., Valtonen, M., Gomez, J. L., Castro-Tirado, A. J., Drozdz, M., Gopakumar, A., Jeong, S., Kidger, M., Komossa, S., Mathur, S., Park, I. H., Reichart, D. E., Zola, S.

“…The BL Lacertae object OJ 287 (z = 0.306) has unique double-peaked optical outbursts every ∼12 yr, and it presents one of the best cases for a small-separation…”
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Refining the OJ 287 2022 impact flare arrival epoch by Valtonen, Mauri J, Zola, Staszek, Gopakumar, A, Lähteenmäki, Anne, Tornikoski, Merja, Dey, Lankeswar, Gupta, Alok C, Pursimo, Tapio, Knudstrup, Emil, Gomez, Jose L, Hudec, Rene, Jelínek, Martin, Štrobl, Jan, Berdyugin, Andrei V, Ciprini, Stefano, Reichart, Daniel E, Kouprianov, Vladimir V, Matsumoto, Katsura, Drozdz, Marek, Mugrauer, Markus, Sadun, Alberto, Zejmo, Michal, Sillanpää, Aimo, Lehto, Harry J, Nilsson, Kari, Imazawa, Ryo, Uemura, Makoto

“…ABSTRACT The bright blazar OJ 287 routinely parades high brightness bremsstrahlung flares, which are explained as being a result of a secondary supermassive…”
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Improved Hydrophobicity of Macroalgae Biopolymer Film Incorporated with Kenaf Derived CNF Using Silane Coupling Agent by Oyekanmi, Adeleke A, Saharudin, N I, Hazwan, Che Mohamad, H P S, Abdul Khalil, Olaiya, Niyi G, Abdullah, Che K, Alfatah, Tata, Gopakumar, Deepu A, Pasquini, Daniel

“…Hydrophilic behaviour of carrageenan macroalgae biopolymer, due to hydroxyl groups, has limited its applications, especially for packaging. In this study,…”
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Multiband extension of the wideband timing technique by Paladi, Avinash Kumar, Dwivedi, Churchil, Rana, Prerna, Nobleson, K, Susobhanan, Abhimanyu, Joshi, Bhal Chandra, Tarafdar, Pratik, Deb, Debabrata, Arumugam, Swetha, Gopakumar, A, Krishnakumar, M A, Batra, Neelam Dhanda, Debnath, Jyotijwal, Kareem, Fazal, Arumugam, Paramasivan, Bagchi, Manjari, Bathula, Adarsh, Dandapat, Subhajit, Desai, Shantanu, Gupta, Yashwant, Hisano, Shinnosuke, Kharbanda, Divyansh, Kikunaga, Tomonosuke, Kolhe, Neel, Maan, Yogesh, Manoharan, P K, Singha, Jaikhomba, Srivastava, Aman, Surnis, Mayuresh, Takahashi, Keitaro

“…ABSTRACT The wideband timing technique enables the high-precision simultaneous estimation of pulsar times of arrival (ToAs) and dispersion measures (DMs) while…”
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Improving DM estimates using low-frequency scatter-broadening estimates by Singha, Jaikhomba, Joshi, Bhal Chandra, Krishnakumar, M A, Kareem, Fazal, Bathula, Adarsh, Dwivedi, Churchil, Jacob, Shebin Jose, Desai, Shantanu, Tarafdar, Pratik, Arumugam, P, Arumugam, Swetha, Bagchi, Manjari, Batra, Neelam Dhanda, Dandapat, Subhajit, Deb, Debabrata, Debnath, Jyotijwal, Gopakumar, A, Gupta, Yashwant, Hisano, Shinnosuke, Kato, Ryo, Kikunaga, Tomonosuke, Marmat, Piyush, Nobleson, K, Paladi, Avinash K, B., Arul Pandian, Prabu, Thiagaraj, Rana, Prerna, Srivastava, Aman, Surnis, Mayuresh, Susobhanan, Abhimanyu, Takahashi, Keitaro

“…ABSTRACT A pulsar’s pulse profile gets broadened at low frequencies due to dispersion along the line of sight or due to multipath propagation. The dynamic…”
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On the need of an ultramassive black hole in OJ 287 by Valtonen, Mauri J, Zola, Staszek, Gopakumar, A, Lähteenmäki, Anne, Tornikoski, Merja, Dey, Lankeswar, Gupta, Alok C, Pursimo, Tapio, Knudstrup, Emil, Gomez, Jose L, Hudec, Rene, Jelínek, Martin, Štrobl, Jan, Berdyugin, Andrei V, Ciprini, Stefano, Reichart, Daniel E, Kouprianov, Vladimir V, Matsumoto, Katsura, Drozdz, Marek, Mugrauer, Markus, Sadun, Alberto, Zejmo, Michal, Sillanpää, Aimo, Lehto, Harry J, Nilsson, Kari, Imazawa, Ryo, Uemura, Makoto, Davidson, James W

“…ABSTRACT The highly variable blazar OJ 287 is commonly discussed as an example of a binary black hole system. The 130 yr long optical light curve is well…”
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Interfacial Compatibility Evaluation on the Fiber Treatment in the Typha Fiber Reinforced Epoxy Composites and Their Effect on the Chemical and Mechanical Properties by Rizal, Samsul, Gopakumar, Deepu A, Thalib, Sulaiman, Huzni, Syifaul, Abdul Khalil, H P S

“…Natural fiber composites have been widely used for various applications such as automotive components, aircraft components and sports equipment. Among the…”
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Enhancement in the Physico-Mechanical Functions of Seaweed Biopolymer Film via Embedding Fillers for Plasticulture Application-A Comparison with Conventional Biodegradable Mulch Film by M, Hasan, Chong, E W N, Jafarzadeh, Shima, Paridah, M T, Gopakumar, Deepu A, Tajarudin, H A, Thomas, Sabu, Abdul Khalil, H P S

“…This study aimed to compare the performance of fabricated microbially induced precipitated calcium carbonate⁻ (MB⁻CaCO₃) based red seaweed ( ) bio-polymer film…”
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Precision pulsar timing with the ORT and the GMRT and its applications in pulsar astrophysics by Joshi, Bhal Chandra, Arumugasamy, Prakash, Bagchi, Manjari, Bandyopadhyay, Debades, Basu, Avishek, Dhanda Batra, Neelam, Bethapudi, Suryarao, Choudhary, Arpita, De, Kishalay, Dey, L., Gopakumar, A., Gupta, Y., Krishnakumar, M. A., Maan, Yogesh, Manoharan, P. K., Naidu, Arun, Nandi, Rana, Pathak, Dhruv, Surnis, Mayuresh, Susobhanan, Abhimanyu

“…Radio pulsars show remarkable clock-like stability, which make them useful astronomy tools in experiments to test equation of state of neutron stars and…”
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Comparison of rocuronium at two different doses and succinylcholine for endotracheal intubation in adult patients for elective surgeries by Chavan, S, Gangadharan, S, Gopakumar, A

“…Background: The effects of rocuronium at two different doses, that is, 0.6 mg/kg (2 × ED95) and 0.9 mg/kg (3 × ED95), were compared with succinylcholine (2…”
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The role of puberty on physical and brain development: A longitudinal study in male Rhesus Macaques by Kovacs-Balint, Z.A., Raper, J., Richardson, R., Gopakumar, A., Kettimuthu, K.P., Higgins, M., Feczko, E., Earl, E., Ethun, K.F., Li, L., Styner, M., Fair, D., Bachevalier, J., Sanchez, M.M.

“…This study examined the role of male pubertal maturation on physical growth and development of neurocircuits that regulate stress, emotional and cognitive…”
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