Aberfelds, A., A. Bartkiewicz, M. Szymczak, Šteinbergs, J., Surcis, G., A. Kobak, M. Durjasz, Shmeld, I. "Milliarcsecond structure and variability of methanol maser emission in three high-mass protostars" Mon. Not. R. Astron. Soc. 524 (2023), 599-618 DOI: 10.1093/mnras/stad1752
A. Kobak, A. Bartkiewicz, M. Szymczak, Olech, M., M. Durjasz, P. Wolak, Chibueze, J.O., Hirota, T., Eislöffel, J., Stecklum, B., Sobolev, A., Bayandina, O., Orosz, G., Burns, R. A., Kim, K.-T., van den Heever, S.P. "Multi-frequency VLBI observations of maser lines during the 6.7 GHz maser flare in the high-mass young stellar object G24.33+0.14 " Astron. Astrophys.671, id.A135 (2023), 1-26 DOI: 10.1051/0004-6361/202244772
2022
M. Durjasz, M. Szymczak, M. Olech, A. Bartkiewicz " Discovery of recurrent flares of 6.7 GHz methanol maser emission in Cepheus A HW2" Astron. Astrophys. 663, id.A123 (2022), 1-16 DOI: 10.1051/0004-6361/202243552
M. Olech, M. Durjasz, M. Szymczak, A. Bartkiewicz "Detection of periodic flares in 6.7 GHz methanol masers G45.804−0.356 and G49.043−1.079" Astron. Astrophys.661, id.A114 (2022), 1-7 DOI: 10.1051/0004-6361/202243108
Hirota, T., P. Wolak, Hunter, T.R., Brogan, C.L., A. Bartkiewicz, M. Durjasz, A. Kobak, Olech, M., M. Szymczak, Burns, R., i inni "Millimeter methanol emission in the high-mass young stellar object G24.33+0.14 " Publ. Astron. Soc. Jap.74, Issue 5 (2022), 1234-1262 DOI: 10.1093/pasj/psac067
2021
M. Durjasz, M. Szymczak, P. Wolak, A. Bartkiewicz "Observations of 12.2 GHz methanol masers towards northern high-mass protostellar objects" Astron. Astrophys.648,118D (2021), 1-13 DOI: 10.1051/0004-6361/202140385
2020
M. Szymczak, P. Wolak, A. Bartkiewicz, M. Aramowicz, M. Durjasz "A search for the OH 6035 MHz line in high-mass star-forming regions" Astron. Astrophys.642, A145 (2020), 1-14 DOI: doi.org/10.1051/0004-6361/202039009
M. Olech, M. Szymczak, P. Wolak, E. Gérard, A. Bartkiewicz "Long-term multi-frequency maser observations of the intermediate-mass young stellar object G107.298+5.639" Astron. Astrophys.634, A41 (2020), 1-18 DOI: doi.org/10.1051/0004-6361/201936943
A. Bartkiewicz, A. Sanna, M. Szymczak, L. Moscadelli, H.J. van Langevelde, P. Wolak "The nature of the methanol maser ring G23.657–00.127 II. Expansion of the maser structure" Astron. Astrophys.637, A15 (2020), 1-12 DOI: doi.org/10.1051/0004-6361/202037562
2019
M. Olech, M. Szymczak, P. Wolak, R. Sarniak, A. Bartkiewicz "6.7GHz variability characteristics of new periodic methanol maser sources" Mon. Not. R. Astron. Soc. 486 (2019), 1236-1254 DOI: doi.org/10.1093/mnras/stz926
M. Durjasz, M. Szymczak, M. Olech "A highly variable methanol maser in G111.256–0.770" Mon. Not. R. Astron. Soc. 485 (2019), 777-783 DOI: doi.org/10.1093/mnras/stz472
F. Rajabi, M. Houde, A. Bartkiewicz, M. Olech, M. Szymczak, P. Wolak "New evidence for Dicke’s superradiance in the 6.7 GHz methanol spectral line in the interstellar medium " Mon. Not. R. Astron. Soc. 484 (2019), 1590-1597 DOI: doi.org/10.1093/mnras/stz074
2018
M. Szymczak, M. Olech, P. Wolak, E. Gerard, A. Bartkiewicz "Giant burst of methanol maser in S255IR-NIRS3" Astron. Astrophys.617, A80 (2018), 1-9 DOI: 10.1051/0004-6361/201833443
M. Szymczak, M. Olech, R. Sarniak, P. Wolak, A. Bartkiewicz "Monitoring observations of 6.7 GHz methanol masers" Mon. Not. R. Astron. Soc. 474 (2018), 219- 253 DOI: doi:10.1093/mnras/stx2693
2016
M. Szymczak, M. Olech, P. Wolak, A. Bartkiewicz, M. Gawroński "Discovery of periodic and alternating flares of the methanol and water masers in G107.298+5.639 " Mon. Not. R. Astron. Soc. 459 (2016), 56-60 DOI: doi:10.1093/mnrasl/slw044
A. Bartkiewicz, M. Szymczak, Huib van Langevelde "European VLBI Network imaging of 6.7 GHz methanol masers" Astron. Astrophys.587, A104 (2016), 1-25 DOI: 10.1051/0004-6361/201527541
2015
M. Szymczak, P. Wolak, A. Bartkiewicz "Discovery of four periodic methanol masers and updated light curve for a further one" Mon. Not. R. Astron. Soc. 448 (2015), 2284-2293 DOI: 10.1093/mnras/stv145
2014
M. Szymczak, P. Wolak, A. Bartkiewicz "6.7 GHz methanol maser variability in Cepheus A" Mon. Not. R. Astron. Soc. 439 (2014), 407-415 DOI: 10.1093/mnras/stu019
A. Bartkiewicz, M. Szymczak, H. van Langevelde "European VLBI Network observations of 6.7 GHz methanol masers in clusters of massive young stellar objects" Astron. Astrophys.564, A110 (2014), 1-22 DOI: 10.1051/0004-6361/201322629
2013
P. Wolak, M. Szymczak, Eric Gerard "Long-term polarimetric observations of OH127.8+0.0" Mon. Not. R. Astron. Soc. 430 (2013), 2499-2509 DOI: 10.1093/mnras/stt075
2012
A. Bartkiewicz, M. Szymczak, Huib van Langevelde "Milliarcsecond structure of water maser emission in two young high-mass stellar objects associated with methanol masers" Astron. Astrophys.541, A72 (2012), 1-9 DOI: http://dx.doi.org/10.1051/0004-6361/201218999
James De Buizer, A. Bartkiewicz, M. Szymczak "Testing the Hypothesis that Methanol Maser Rings Trace Circumstellar Disks: High-resolution Near-infrared and Mid-infrared Imaging" Astrophys. J. 754, Issue 2, article id.149 (2012), 1-15 DOI: 10.1088/0004-637X/754/2/149
M. Szymczak, P. Wolak, A. Bartkiewicz, K. Borkowski "The Torun catalogue of 6.7 GHz methanol masers" Astron. Nachr. 333, Issue 7 (2012), 634-639 DOI: 10.1002/asna.201211702
2011
M. Szymczak, P. Wolak, A. Bartkiewicz, H. van Langevelde "Periodic variability of 6.7 GHz methanol masers in G22.357+0.066" Astron. Astrophys.531, L3 (2011), 1-6 DOI: 10.1051/0004-6361/201117145
A. Bartkiewicz, M. Szymczak, Y. Pihlstrom, H. van Langevelde, A. Brunthaler, M. Reid "VLA observations of water masers towards 6.7 GHz methanol maser sources" Astron. Astrophys.525, A120 (2011), 1-17 DOI: 10.1051/0004-6361/201015235
2009
A. Bartkiewicz, M. Szymczak, H. van Langevelde, A.M.S. Richards, Y.M. Pihlstrom "The diversity of methanol maser morphologies from VLBI observations" Astron. Astrophys.502 (2009), 155-173 DOI: 10.1051/0004-6361/200912250
2008
A. Bartkiewicz, A. Brunthaler, M. Szymczak, H. van Langevelde, M.J. Reid " The nature of the methanol maser ring G23.657-00.127. I. The distance through trigonometric parallax measurements" Astron. Astrophys.490 (2008), 787-792 DOI: 10.1051/0004-6361:200810470
2007
M. Szymczak, A. Bartkiewicz, A.M.S. Richards "A multi-transition molecular line study of candidate massive young stellar objects associated with methanol masers" Astron. Astrophys.468 (2007), 617-625 DOI: 10.1051/0004-6361:20077289
2005
A. Bartkiewicz, M. Szymczak, R.J. Cohen, A.M.S. Richards "Magnetic field in Cepheus A as deduced from OH maser polarimetric observations" Mon. Not. R. Astron. Soc. 361 (2005), 623-632 DOI: 10.1111/j.1365-2966.2005.09203.x
A. Bartkiewicz, M. Szymczak, H. van Langevelde "Ring shaped 6.7 GHz methanol maser emission around a young high-mass star" Astron. Astrophys.442 (2005), 61-64 DOI: 10.1051/0004-6361:200500190
2004
A. Bartkiewicz, M. Szymczak, R.J. Cohen, A.M.S. Richards "Spatial and velocity coincidence of 4765- and 1720-MHz OH masers in two star-forming regions Cep A and W75N" Mon. Not. R. Astron. Soc. 350 (2004), 1409-1415 DOI: 10.1111/j.1365-2966.2004.07735.x