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Browsing IIAP Publications by Title

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  • Is the X-ray pulsar H 0253 + 193 a neutron star spun down in a molecular cloud? 
    Bhatt, H. C (The European Southern Observatory, 1990-06)
    The detection of 206s X-ray pulsations from H0253+193 indicates that the source is a compact object. It is argued here that object can not be a T Tauri star or Be/X –ray binary pulsar suggested that H 0253+193 is slowly ...
  • Is the X-ray pulsar H 0253 + 193 a neutron star spun down in a molecular cloud? 
    Bhatt, H. C (The European Southern Observatory, 1990-06)
    The detection of 206s X-ray pulsations from H0253+193 indicates that the source is a compact object. It is argued here that object can not be a T Tauri star or Be/X –ray binary pulsar suggested that H 0253+193 is slowly ...
  • Is there lower limit to velocity or velocity change? 
    Sreenath, B.N; Arun, K; Sivaram, C (Springer, 2013-05)
    Here we explore the possibility of a lower limit to velocity or velocity change which is 20 orders of magnitude smaller than the speed of light and explore the various observable signatures including those in cosmic rays ...
  • Isodensitometry of Omega Centauri and 47 Tucanae 
    Scaria, K. K (Indian Institute of Astrophysics, Bangalore, 1980)
    We present details of procedure on equidensitometry of globular clusters using the Sabattier technique in photography. Equidensitometry of Omega Centauri and 47 Tuc shows that both clusters become more elliptical beyond r ...
  • ISOGAL: A deep survey of the obscured inner Milky Way with ISO at 7 mu m and 15 mu m and with DENIS in the near-infrared 
    Omont, A; Gilmore, G. F; Alard, C; Aracil, B; August, T; Baliyan, K; Beaulieu, S; Begon, S; Bertou, X; Blommaert, J. A. D. L; Borsenberger, J; Burgdorf, M; Caillaud, B; Cesarsky, C; Chitre, A; Copet, E; de Batz, B; Egan, M. P; Egret, D; Epchtein, N; Felli, M; Fouque, P; Ganesh, S; Genzel, R; Glass, I. S; Gredel, R; Groenewegen, M. A. T; Guglielmo, F; Habing, H. J; Hennebelle, P; Jiang, B; Joshi, U. C; Kimeswenger, S; Messineo, M; Miville-Deschenes, M. A; Moneti, A; Morris, M; Ojha, D. K; Ortiz, R; Ott, S; Parthasarathy, M; Perault, M; Price, S. D; Robin, A. C; Schultheis, M; Schuller, F; Simon, G; Soive, A; Testi, L; Teyssier, D; Tiphene, D; Unavane, M; van Loon, J. T; Wyse, R (EDP Sciences, 2003-06)
    The ISOGAL project is an infrared survey of specific regions sampling the Galactic Plane selected to provide information on Galactic structure, stellar populations, stellar mass-loss and the recent star formation history ...
  • Issues with external occultation of a coronagraph 
    Bayanna, A. R; Mathew, S. K; Sankarasubramanian, K; Venkatakrishnan, P; Singh, J; Prasad, B. R (Springer, 2011-04)
    This paper addresses some of the issues related to externally occulted solar coronagraph; vignetting and achievable resolution due to an external occulter. The analytical expression by Evans (J Opt Soc Am 38:1083–1085, ...
  • An iterative simultaneous solution of the equations of statistical equilibrium and radiative transfer in the comoving frame 
    Peraiah, A (Indian Academy of Sciences, 1980)
  • IUE and ISO observations of the bipolar proto-planetary nebula Hen 401 (IRAS 10178-5958) 
    Parthasarathy, M; García-Lario, P; Gauba, G; de Martino, D; Nakada, Y; Fujii, T; Pottasch, S. R; de Cordoba, L. S. F (EDP Sciences, 2001-09)
    We present ultraviolet (IUE) and infrared (ISO) observations of the bipolar proto-planetary nebula Hen 401 which, combined with previously available optical and near infrared data, are used to reconstruct the overall ...
  • IUE observations of high galactic latitude F supergiants HD 161796 and HD 187885 
    Parthasarathy, M; Pottasch, S. R; Wamsteker, W (European Southern Observatory, 1988-09)
    Low resolution (6 A) IUE ultraviolet spectra of the high galactic latitude F supergiants HD 161796 (F3 Ib) and HD 187885 (F2-3I) are analyzed. The UV spectrum (1250 A to 3250 A) of HD 161796 shows no excess UV flux ...
  • The IUE ultraviolet spectrum of PC 11 
    Parthasarathy, M; Pottasch, S. R; Clavel, J (International Astronomical Union, 1993)
  • J-state interference signatures in the second solar spectrum. Modeling the Cr I triplet at 5204-5208 
    Smitha, H. N; Nagendra, K. N; Stenflo, J. O; Bianda, M; Sampoorna, M; Ramelli, R; Anusha, L. S (EDP Sciences, 2012-05)
    The scattering polarization in the solar spectrum is traditionally modeled with each spectral line treated separately, but this is generally inadequate for multiplets where J-state interference plays a significant role. ...
  • J1216+0709: A Radio Galaxy with Three Episodes of AGN Jet Activity 
    Veeresh, Singh; Ishwara-Chandra, C. H; Kharb, P; Srivastava, S; Janardhan, P (IOP Publishing, 2016-08-01)
    We report the discovery of a "triple-double radio galaxy," J1216+0709, detected in deep low-frequency Giant Metrewave Radio Telescope (GMRT) observations. J1216+0709 is only the third radio galaxy, after B0925+420 and ...
  • Jagadish Chandra Bhattacharyya (1930–2012) 
    Prabhu, T. P; Rajan, K. T (Indian Academy of Sciences, 2012-09-25)
    J. C. Bhattacharyya (JCB) passed away in Delhi on 4 June 2012. An eminent instrumentation scientist and observational astronomer, JCB is well known for his discoveries of the atmosphere of Jupiter’s satellite Ganymede ...
  • Jan oort and interstellar clouds 
    Mallik, D. C. V (Indian Academy of Sciences, 1993-07-25)
  • The JCMT BISTRO Survey: A Spiral Magnetic Field in a Hub-filament Structure, Monoceros R2 
    Hwang, Jihye; Kim, Jongsoo; Pattle, Kate; Lee, Chang Won; Koch, Patrick M; Johnstone, Doug; Tomisaka, Kohji; Whitworth, Anthony; Furuya, Ray S; Kang, Ji-hyun; Lyo, A-Ran; Duan, Yan; Gu, Qilao; Law, Chi-Yan; Kobayashi, Masato I. N; Li, Dalei; Li, Di; Li, Guangxing; Li, Hua-bai; Liu, Tie; Lu, Xing; Chrysostomou, Antonio; Qian, Lei; Wang, Hongchi; Wu, Jintai; Xie, Jinjin; Nagata, Tetsuya; Yuan, Jinghua; Zhang, Chuan-Peng; Zhang, Guoyin; Zhang, Yapeng; Zhou, Jianjun; Debattista, Victor; Zhu, Lei; Berry, David; Friberg, Per; Graves, Sarah; Liu, Junhao; Nakamura, Fumitaka; Mairs, Steve; Parsons, Harriet; Rawlings, Mark; Doi, Yasuo; Eden, David; Hayashi, Saeko; Hull, Charles L. H; Inoue, Tsuyoshi; Inutsuka, Shu-ichiro; Iwasaki, Kazunari; Kataoka, Akimasa; Nakanishi, Hiroyuki; Pyo, Tae-Soo; Saito, Hiro; Seta, Masumichi; Park, Geumsook; Shimajiri, Yoshito; Chung, Eun Jung; Shinnaga, Hiroko; Tsukamoto, Yusuke; Zenko, Tetsuya; Chen, Huei-Ru Vivien; Duan, Hao-Yuan; Fanciullo, Lapo; Kemper, Francisca; Lee, Chin-Fei; Eyres, Stewart; Lin, Sheng-Jun; Liu, Sheng-Yuan; Arzoumanian, Doris; Ohashi, Nagayoshi; Rao, Ramprasad; Tang, Ya-Wen; Wang, Jia-Wei; Yang, Meng-Zhe; Yen, Hsi-Wei; Bourke, Tyler L; Falle, Sam; Fuller, Gary; Gledhill, Tim; Greaves, Jane; Griffin, Matt; Choi, Minho; Hatchell, Jennifer; Karoly, Janik; Kirk, Jason; Konyves, Vera; Kwon, Woojin; Longmore, Steven; van Loo, Sven; de Looze, Ilse; Peretto, Nicolas; Priestley, Felix; Choi, Youngwoo; Rawlings, Jonathan; Retter, Brendan; Richer, John; Rigby, Andrew; Savini, Giorgio; Kim, Shinyoung; Scaife, Anna; Viti, Serena; Diep, Pham Ngoc; Ngoc, Nguyen Bich; Choi, Yunhee; Tram, Le Ngoc; Andre, Philippe; Coude, Simon; Dowell, C. Darren; Friesen, Rachel; Robitaille, Jean-Francois; Tamura, Motohide; Kwon, Jungmi; Archana, Soam; Han, Ilseung; Jeong, Il-Gyo; Hoang, Thiem; Kim, Kyoung Hee; Onaka, Takashi; Eswaraiah, Chakali; Ward-Thompson, Derek; Liu, Hong-Li; Tang, Xindi; Chen, Wen Ping; Matsumura, Masafumi; Hoang, Thuong Duc; Kang, Miju; Chen, Zhiwei; Le Gouellec, Valentin J. M; Kirchschlager, Florian; Poidevin, Frederick; Bastien, Pierre; Qiu, Keping; Hasegawa, Tetsuo; Lai, Shih-Ping; Byun, Do-Young; Cho, Jungyeon; Kim, Hyosung; Kim, Kee-Tae; Lee, Jeong-Eun; Lee, Sang-Sung; Lee, Yong-Hee; Kawabata, Koji; Lee, Hyeseung; Kim, Mi-Ryang; Yoo, Hyunju; Yun, Hyeong-Sik; Chen, Mike; Di Francesco, James; Fiege, Jason; Fissel, Laura M; Franzmann, Erica; Houde, Martin; Kim, Gwanjeong; Lacaille, Kevin; Matthews, Brenda; Sadavoy, Sarah; Moriarty-Schieven, Gerald; Tahani, Mehrnoosh; Ching, Tao-Chung; Dai, Y. Sophia (American Astronomical Society, 2022-12-10)
    We present and analyze observations of polarized dust emission at 850 μm toward the central 1 × 1 pc hubfilament structure of Monoceros R2 (Mon R2). The data are obtained with SCUBA-2/POL-2 on the James Clerk Maxwell ...
  • The JCMT BISTRO Survey: multiwavelength polarimetry of bright regions in NGC 2071 in the far-infrared/submillimetre range, with POL-2 and HAWC+ 
    Fanciullo, Lapo; Kemper, Francisca; Pattle, Kate; Koch, Patrick M; Sadavoy, Sarah; Coude, Simon; Archana Soam; Hoang, Thiem; Onaka, Takashi; Gouellec, Valentin J M Le; Arzoumanian, Doris; Berry, David; Eswaraiah, Chakali; Chung, Eun Jung; Furuya, Ray; Hull, Charles L H; Hwang, Jihye; Johnstone, Douglas; Kang, Ji-hyun; Kim, Kyoung Hee; Kirchschlager, Florian; Konyves, Vera; Kwon, Jungmi; Kwon, Woojin; Lai, Shih-Ping; Lee, Chang Won; Liu, Tie; Lyo, A-Ran; Stephens, Ian; Tamura, Motohide; Tang, Xindi; Ward-Thompson, Derek; Whitworth, Anthony; Shinnaga, Hiroko (Oxford University Press on behalf of Royal Astronomical Society, 2022-05)
    Polarized dust emission is a key tracer in the study of interstellar medium and of star formation. The observed polarization, however, is a product of magnetic field structure, dust grain properties, and grain alignment ...
  • The JCMT BISTRO Survey: Studying the Complex Magnetic Field of L43 
    Karoly, Janik; Ward-Thompson, Derek; Pattle, Kate; Berry, David; Whitworth, Anthony; Kirk, Jason; Bastien, Pierre; Ching, Tao-Chung; Coudé, Simon; Hwang, Jihye; Kwon, Woojin; Poidevin, Frédérick; Furuya, Ray; Robitaille, Jean-François; Loo, Sven van; Arzoumanian, Doris; Bourke, Tyler L.; Byun, Do-Young; Chen, Huei-Ru Vivien; Chen, Wen Ping; Chen, Mike; Kim, Hyosung; Chen, Zhiwei; Cho, Jungyeon; Gledhill, Tim; Choi, Minho; Choi, Youngwoo; Choi, Yunhee; Chrysostomou, Antonio; Chung, Eun Jung; Dai, Sophia; Debattista, Victor; Nakamura, Fumitaka; Francesco, James Di; Diep, Pham Ngoc; Doi, Yasuo; Graves, Sarah; Duan, Hao-Yuan; Duan, Yan; Eswaraiah, Chakali; Fanciullo, Lapo; Fiege, Jason; Fissel, Laura M.; Kirchschlager, Florian; Franzmann, Erica; Friberg, Per; Greaves, Jane; Griffin, Matt; Gu, Qilao; Han, Ilseung; Hoang, Thiem; Moriarty-Schieven, Gerald; Houde, Martin; Hull, Charles L. H; Kobayashi, Masato I. N; Inoue, Tsuyoshi; Inutsuka, Shu-ichiro; Iwasaki, Kazunari; Jeong, Il-Gyo; Johnstone, Doug; Könyves, Vera; Kang, Ji-hyun; Kang, Miju; Nagata, Tetsuya; Kataoka, Akimasa; Koch, Patrick M.; Kawabata, Koji; Kemper, Francisca; Kim, Jongsoo; Kim, Shinyoung; Kim, Gwanjeong; Kim, Kyoung Hee; Kim, Mi-Ryang; Kim, Kee-Tae; Kusune, Takayoshi; Kwon, Jungmi; Lacaille, Kevin; Law, Chi-Yan; Lee, Chang Won; Tang, Xindi; Lee, Hyeseung; Lee, Yong-Hee; Nakanishi, Hiroyuki; Lee, Chin-Fei; Lee, Jeong-Eun; Lee, Sang-Sung; Li, Dalei; Li, Di; Li, Guangxing; Li, Hua-bai; Hasegawa, Tetsuo; Lin, Sheng-Jun; Liu, Hong-Li; Liu, Tie; Ngoc, Nguyen Bich; Liu, Sheng-Yuan; Liu, Junhao; Longmore, Steven; Lu, Xing; Lyo, A-Ran; Mairs, Steve; Tomisaka, Kohji; Matsumura, Masafumi; Matthews, Brenda; Ohashi, Nagayoshi; Onaka, Takashi; Park, Geumsook; Parsons, Harriet; Peretto, Nicolas; Archana Soam; Priestley, Felix; Pyo, Tae-Soo; Tram, Le Ngoc; Qian, Lei; Rao, Ramprasad; Rawlings, Jonathan; Rawlings, Mark; Retter, Brendan; Richer, John; Rigby, Andrew; Sadavoy, Sarah; Wang, Jia-Wei; Saito, Hiro; Tsukamoto, Yusuke; Savini, Giorgio; Seta, Masumichi; Sharma, Ekta; Shimajiri, Yoshito; Shinnaga, Hiroko; Tahani, Mehrnoosh; Tamura, Motohide; Tang, Ya-Wen; Viti, Serena; Wang, Hongchi; Wu, Jintai; Xie, Jinjin; Yang, Meng-Zhe; Friesen, Rachel; Yen, Hsi-Wei; Yoo, Hyunju; Lai, Shih-Ping; Yuan, Jinghua; Yun, Hyeong-Sik; Zenko, Tetsuya; Zhang, Guoyin; Zhang, Yapeng; Zhang, Chuan-Peng; Zhou, Jianjun; Fuller, Gary; Zhu, Lei; Looze, Ilse de; André, Philippe; Qiu, Keping; Dowell, C. Darren; Eden, David; Eyres, Stewart; Falle, Sam; Gouellec, Valentin J. M. Le (American Astronomical Society, 2023-07-20)
    We present observations of polarized dust emission at 850 μm from the L43 molecular cloud, which sits in the Ophiuchus cloud complex. The data were taken using SCUBA-2/POL-2 on the James Clerk Maxwell Telescope as a part ...
  • The JCMT BISTRO-2 Survey: Magnetic Fields of the Massive DR21 Filament 
    Ching, Tao-Chung; Qiu, Keping; Li, Di; Ren, Zhiyuan; Lai, Shih-Ping; Berry, David; Pattle, Kate; Furuya, Ray; Ward-Thompson, Derek; Johnstone, Doug; Koch, Patrick M.; Liu, Sheng-Yuan; Iwasaki, Kazunari; Jeong, Il-Gyo; Konyves, Vera; Kang, Ji-hyun; Kang, Miju; Karoly, Janik; Kataoka, Akimasa; Kawabata, Koji; Kemper, Francisca; Hasegawa, Tetsuo; Kim, Jongsoo; Lu, Xing; Kim, Mi-Ryang; Kim, Shinyoung; Kim, Hyosung; Kim, Kee-Tae; Kim, Gwanjeong; Kirk, Jason; Kobayashi, Masato I. N.; Kusune, Takayoshi; Shinnaga, Hiroko; Kwon, Jungmi; Lacaille, Kevin; Mairs, Steve; Law, Chi-Yan; Lee, Sang-Sung; Lee, Hyeseung; Lee, Jeong-Eun; Lee, Chin-Fei; Lee, Yong-Hee; Li, Guangxing; Tang, Ya-Wen; Matsumura, Masafumi; Matthews, Brenda; Moriarty-Schieven, Gerald; Nagata, Tetsuya; Nakamura, Fumitaka; Lee, Chang Won; Nakanishi, Hiroyuki; Ngoc, Nguyen Bich; Ohashi, Nagayoshi; Park, Geumsook; Tomisaka, Kohji; Parsons, Harriet; Peretto, Nicolas; Priestley, Felix; Pyo, Tae-Soo; Qian, Lei; Rao, Ramprasad; Hoang, Thiem; Rawlings, Mark; Rawlings, Jonathan; Retter, Brendan; Tram, Le Ngoc; Richer, John; Rigby, Andrew; Sadavoy, Sarah; Saito, Hiro; Savini, Giorgio; Seta, Masumichi; Shimajiri, Yoshito; Tsukamoto, Yusuke; Viti, Serena; Wang, Hongchi; Wu, Jintai; Xie, Jinjin; Cho, Jungyeon; Yang, Meng-Zhe; Kwon, Woojin; Yen, Hsi-Wei; Yoo, Hyunju; Yuan, Jinghua; Yun, Hyeong-Sik; Zenko, Tetsuya; Zhang, Chuan-Peng; Zhang, Yapeng; Zhang, Guoyin; Choi, Yunhee; Zhou, Jianjun; Zhu, Lei; Bastien, Pierre; Looze, Ilse de; Andre, Philippe; Darren Dowell, C.; Eyres, Stewart; Falle, Sam; Robitaille, Jean-Francois; Loo, Sven van; Choi, Youngwoo; Eswaraiah, Chakali; Wang, Jia-Wei; Kim, Kyoung Hee; Hwang, Jihye; Archana Soam; Lyo, A-Ran; Liu, Junhao; Le Gouellec, Valentin J. M.; Arzoumanian, Doris; Whitworth, Anthony; Choi, Minho; Di Francesco, James; Poidevin, Frederick; Liu, Tie; Coude, Simon; Tahani, Mehrnoosh; Liu, Hong-Li; Onaka, Takashi; Li, Dalei; Tamura, Motohide; Chen, Zhiwei; Chrysostomou, Antonio; Tang, Xindi; Kirchschlager, Florian; Bourke, Tyler L.; Byun, Do-Young; Chen, Mike; Chen, Huei-Ru Vivien; Chen, Wen Ping; Chung, Eun Jung; Sophia Dai, Y.; Diep, Pham Ngoc; Doi, Yasuo; Duan, Yan; Li, Hua-bai; Duan, Hao-Yuan; Eden, David; Fanciullo, Lapo; Fiege, Jason; Fissel, Laura M.; Franzmann, Erica; Friberg, Per; Friesen, Rachel; Fuller, Gary; Gledhill, Tim; Lin, Sheng-Jun; Graves, Sarah; Greaves, Jane; Griffin, Matt; Gu, Qilao; Han, Ilseung; Hayashi, Saeko; Houde, Martin; Hull, Charles L. H.; Inoue, Tsuyoshi; Inutsuka, Shu-ichiro (American Astronomical Society, 2022-12-20)
    We present 850 μm dust polarization observations of the massive DR21 filament from the B-fields In STar-forming Region Observations (BISTRO) survey, using the POL-2 polarimeter and the SCUBA-2 camera on the James Clerk ...
  • Jet in seyfert galaxies 
    Shastri, P; Lal, D. V; Gabuzda, D. C (Astronomical Society of the Pacific, 2003)
    We will present the main results from a study of the pc-scale radio structure of our matched sample of Seyfert galaxies, specifically selected to test the Unified Scheme. We chose purportedly face-on (Seyfert 1) and edge-on ...
  • Jet properties of XTE J1752−223 during its 2009–2010 outburst 
    Debnath, Dipak; Chatterjee, Kaushik; Chatterjee, Debjit; Jana, Arghajit; Chakrabarti, S. K (Oxford University Press on behalf of the Royal Astronomical Society, 2021-07)
    Galactic short orbital period black hole candidate (BHC) XTE J1752−223 was discovered on 2009 October 21 by the Rossi X-ray Timing Explorer (RXTE). We study the spectral properties of this outburst using transonic flow ...

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